2021年已知較明亮的彗星 (第四版)
本帖最後由 WCYue 於 2021-1-17 23:40 編輯2021年1月16日第四版。引用本帖內容時,請說明資料來源:香港天文學會
第二版:預報按照2020年12月22日的彗星資料更新
第三版:預報按照國際天文聯會2021年1月10日的彗星資料更新
第四版:預報按照國際天文聯會2021年1月16日的彗星資料更新
2021年已知亮於10等的彗星
2021年6月 8.2等 龐士-溫尼克彗星7P/Pons–Winnecke
2021年9月 9.8等 德亞瑞司特彗星6P/d'Arrest
2021年10月-3.6等 SOHO 彗星 342P/SOHO
2021年12月0.9等 倫納德彗星 C/2021 A1 Leonard
2022年1月 7.9等 包瑞利彗星19P/Borrelly
2021年已知最明亮的彗星:2021年10月-3.6等 SOHO 彗星 342P/SOHO
2021年已知最接近地球的明亮彗星:倫納德彗星 C/2021 A1 Leonard,最近地球時在2021年12月12日香港時間22時13分,距離地球只有0.233228 天文單位
2021年已知最接近太陽的明亮彗星:SOHO 彗星 342P/SOHO,最近太陽時在2021年10月19日香港時間4時0分,近日點距離太陽只有0.05208 天文單位(大約只有水星近日點距離太陽的六分之一)
彗星是否可觀並非單純取決於它的亮度,或者是否直接看到,是與它的回歸次數和距離地球遠近有關。距離地球越近可觀性越大,彗核越大,表面物質越鬆散,回歸次數越少,距離地球越近,看到彗尾在天空伸展的角度越大,可觀性就越高。
SOHO 彗星 = 太陽和太陽風層探測器彗星的簡稱(Solar and Heliospheric Observatory,簡稱 SOHO)。直至2020年8月19日為止,太陽和太陽風層探測器總共發現 1,462 顆以 SOHO 命名的彗星,其中四顆是週期性的彗星。
彗星的光度 (星等) 是綜合光度
彗星中文譯名準則 https://forum.hkas.org.hk/thread-7369-1-1.html
本帖最後由 WCYue 於 2020-12-23 20:59 編輯
龐士-溫尼克彗星 7P/Pons–Winnecke 星曆表
根據2020年12月22日的天文測量數據
T 2021 May 27.1038 TT
q1.234302 Peri. 172.5866
a3.414333 Node 93.3767
e0.638494 Incl.22.3635
Ref: MPEC 2015-E14
年月 日 hm s o'" deltaRSun ElongPhase 光度 "/minPA
2021 Apr117 52 33.6 91 55 0.8091.407101.7 44.1 10.0 1.9195.1
2021 Apr217 55 39.4 8 57 42 0.8001.401101.7 44.3 10.0 1.9395.4
2021 Apr317 58 46.1 8 53 12 0.7901.396101.8 44.5 9.9 1.9495.7
2021 Apr4181 53.9 8 48 23 0.7811.390101.9 44.7 9.9 1.9596.1
2021 Apr51852.6 8 43 15 0.7731.385102.0 45.0 9.9 1.9696.5
2021 Apr6188 12.4 8 37 48 0.7641.380102.0 45.2 9.8 1.9796.8
2021 Apr718 11 23.2 8 320 0.7551.374102.1 45.4 9.8 1.9997.2
2021 Apr818 14 35.0 8 25 51 0.7471.369102.1 45.6 9.7 2.0097.6
2021 Apr918 17 47.8 8 19 19 0.7381.364102.2 45.9 9.7 2.0198.0
2021 Apr 1018 211.7 8 12 24 0.7301.359102.3 46.1 9.6 2.0398.4
2021 Apr 1118 24 16.7 855 0.7211.354102.3 46.3 9.6 2.0498.8
2021 Apr 1218 27 32.7 7 57 21 0.7131.349102.4 46.5 9.6 2.0599.3
2021 Apr 1318 30 49.8 7 49 11 0.7051.345102.5 46.7 9.5 2.0799.7
2021 Apr 1418 348.1 7 40 34 0.6971.340102.5 47.0 9.5 2.09 100.2
2021 Apr 1518 37 27.4 7 31 29 0.6891.335102.6 47.2 9.4 2.10 100.7
2021 Apr 1618 40 47.9 7 21 56 0.6811.331102.6 47.4 9.4 2.12 101.1
2021 Apr 1718 449.6 7 11 53 0.6741.326102.7 47.6 9.4 2.13 101.6
2021 Apr 1818 47 32.4 71 19 0.6661.322102.8 47.8 9.3 2.15 102.1
2021 Apr 1918 50 56.4 6 50 13 0.6591.318102.8 48.0 9.3 2.17 102.6
2021 Apr 2018 54 21.6 6 38 35 0.6511.313102.9 48.2 9.3 2.19 103.1
2021 Apr 2118 57 48.1 6 26 24 0.6441.309102.9 48.4 9.2 2.21 103.6
2021 Apr 22191 15.7 6 13 39 0.6371.305103.0 48.6 9.2 2.22 104.1
2021 Apr 23194 44.7 60 18 0.6301.302103.1 48.8 9.1 2.24 104.7
2021 Apr 24198 14.8 5 46 22 0.6231.298103.1 49.0 9.1 2.26 105.2
2021 Apr 2519 11 46.3 5 31 48 0.6161.294103.2 49.2 9.1 2.28 105.7
2021 Apr 2619 15 19.0 5 16 38 0.6091.290103.3 49.4 9.0 2.31 106.3
2021 Apr 2719 18 53.1 50 49 0.6031.287103.3 49.6 9.0 2.33 106.8
2021 Apr 2819 22 28.4 4 44 21 0.5961.284103.4 49.7 9.0 2.35 107.3
2021 Apr 2919 265.0 4 27 13 0.5901.280103.5 49.9 8.9 2.37 107.9
2021 Apr 3019 29 42.9 49 25 0.5831.277103.6 50.1 8.9 2.39 108.4
2021 May119 33 22.0 3 50 55 0.5771.274103.7 50.2 8.9 2.42 109.0
2021 May219 372.4 3 31 44 0.5711.271103.8 50.4 8.8 2.44 109.5
2021 May319 40 44.0 3 11 50 0.5651.268103.8 50.5 8.8 2.46 110.1
2021 May419 44 26.8 2 51 13 0.5591.265103.9 50.7 8.8 2.48 110.6
2021 May519 48 10.8 2 29 52 0.5531.263104.0 50.8 8.7 2.51 111.2
2021 May619 51 56.0 27 47 0.5481.260104.1 50.9 8.7 2.53 111.7
2021 May719 55 42.3 1 44 57 0.5421.258104.3 51.0 8.7 2.55 112.3
2021 May819 59 29.7 1 21 21 0.5371.255104.4 51.2 8.6 2.58 112.8
2021 May9203 18.2 0 570 0.5321.253104.5 51.3 8.6 2.60 113.4
2021 May 102077.8 0 31 52 0.5271.251104.6 51.4 8.6 2.62 113.9
2021 May 1120 10 58.4 05 59 0.5221.249104.7 51.4 8.6 2.65 114.5
2021 May 1220 14 50.1- 0 20 42 0.5171.247104.9 51.5 8.5 2.67 115.0
2021 May 1320 18 42.6- 0 489 0.5121.246105.0 51.6 8.5 2.69 115.5
2021 May 1420 22 36.1- 1 16 23 0.5081.244105.2 51.6 8.5 2.71 116.1
2021 May 1520 26 30.5- 1 45 23 0.5031.243105.3 51.7 8.5 2.73 116.6
2021 May 1620 30 25.7- 2 159 0.4991.241105.5 51.7 8.4 2.76 117.1
2021 May 1720 34 21.7- 2 45 41 0.4951.240105.6 51.8 8.4 2.78 117.6
2021 May 1820 38 18.4- 3 16 59 0.4911.239105.8 51.8 8.4 2.80 118.2
2021 May 1920 42 15.9- 3 491 0.4871.238106.0 51.8 8.4 2.82 118.7
2021 May 2020 46 13.9- 4 21 47 0.4831.237106.2 51.8 8.3 2.83 119.1
2021 May 2120 50 12.5- 4 55 16 0.4801.236106.4 51.8 8.3 2.85 119.6
2021 May 2220 54 11.6- 5 29 28 0.4761.236106.6 51.7 8.3 2.87 120.1
2021 May 2320 58 11.1- 64 20 0.4731.235106.8 51.7 8.3 2.88 120.6
2021 May 24212 11.0- 6 39 52 0.4701.235107.0 51.7 8.3 2.90 121.0
2021 May 25216 11.1- 7 162 0.4671.234107.2 51.6 8.3 2.91 121.5
2021 May 2621 10 11.4- 7 52 50 0.4641.234107.4 51.5 8.2 2.92 121.9
2021 May 2721 14 11.8- 8 30 13 0.4621.234107.6 51.5 8.2 2.93 122.4
2021 May 2821 18 12.2- 989 0.4591.234107.9 51.4 8.2 2.94 122.8
2021 May 2921 22 12.5- 9 46 37 0.4571.235108.1 51.3 8.2 2.95 123.2
2021 May 3021 26 12.5-10 25 36 0.4551.235108.4 51.2 8.2 2.95 123.6
2021 May 3121 30 12.1-1153 0.4531.235108.6 51.1 8.2 2.95 124.0
2021 Jun121 34 11.3-11 44 57 0.4511.236108.9 50.9 8.2 2.95 124.4
2021 Jun221 389.9-12 25 16 0.4491.237109.1 50.8 8.2 2.95 124.9
2021 Jun321 427.7-135 56 0.4481.238109.4 50.6 8.2 2.95 125.3
2021 Jun421 464.7-13 46 58 0.4471.239109.7 50.5 8.2 2.94 125.6
2021 Jun521 500.7-14 28 17 0.4461.240110.0 50.3 8.2 2.94 126.0
2021 Jun621 53 55.6-159 53 0.4451.241110.3 50.1 8.2 2.93 126.4
2021 Jun721 57 49.3-15 51 42 0.4441.242110.6 49.9 8.2 2.92 126.8
2021 Jun8221 41.6-16 33 43 0.4431.244110.9 49.7 8.2 2.90 127.2
2021 Jun9225 32.3-17 15 53 0.4431.245111.2 49.5 8.2 2.89 127.6
2021 Jun 10229 21.5-17 58 10 0.4421.247111.5 49.3 8.2 2.87 127.9
2021 Jun 1122 138.9-18 40 32 0.4421.249111.8 49.0 8.2 2.85 128.3
2021 Jun 1222 16 54.4-19 22 56 0.4421.251112.1 48.8 8.2 2.83 128.7
2021 Jun 1322 20 38.0-205 21 0.4421.253112.4 48.5 8.2 2.80 129.1
2021 Jun 1422 24 19.4-20 47 43 0.4421.255112.8 48.3 8.2 2.78 129.4
2021 Jun 1522 27 58.5-21 301 0.4431.257113.1 48.0 8.2 2.75 129.8
2021 Jun 1622 31 35.3-22 12 13 0.4431.260113.4 47.7 8.2 2.72 130.2
2021 Jun 1722 359.5-22 54 16 0.4441.262113.8 47.4 8.2 2.69 130.6
2021 Jun 1822 38 41.2-23 369 0.4451.265114.1 47.2 8.3 2.66 130.9
2021 Jun 1922 42 10.1-24 17 49 0.4461.268114.5 46.9 8.3 2.62 131.3
2021 Jun 2022 45 36.2-24 59 15 0.4471.270114.8 46.6 8.3 2.59 131.7
2021 Jun 2122 48 59.4-25 40 26 0.4481.273115.2 46.3 8.3 2.55 132.1
2021 Jun 2222 52 19.5-26 21 19 0.4501.276115.5 45.9 8.3 2.51 132.5
2021 Jun 2322 55 36.4-271 53 0.4511.280115.9 45.6 8.3 2.47 132.9
2021 Jun 2422 58 50.0-27 426 0.4531.283116.2 45.3 8.4 2.43 133.3
2021 Jun 252320.3-28 21 59 0.4551.286116.6 45.0 8.4 2.39 133.7
2021 Jun 262357.0-291 28 0.4571.290116.9 44.6 8.4 2.35 134.2
2021 Jun 27238 10.1-29 40 34 0.4591.293117.3 44.3 8.4 2.31 134.7
2021 Jun 2823 119.4-30 19 16 0.4611.297117.7 44.0 8.4 2.26 135.1
2021 Jun 2923 144.9-30 57 32 0.4641.301118.0 43.6 8.5 2.22 135.7
2021 Jun 3023 16 56.5-31 35 23 0.4661.305118.4 43.3 8.5 2.17 136.2
2021 Jul123 19 43.9-32 12 46 0.4691.309118.8 42.9 8.5 2.13 136.7
2021 Jul223 22 27.2-32 49 42 0.4711.313119.2 42.6 8.5 2.08 137.3
2021 Jul323 256.3-33 26 10 0.4741.317119.5 42.2 8.6 2.03 137.9
2021 Jul423 27 41.0-3429 0.4771.321119.9 41.9 8.6 1.99 138.5
2021 Jul523 30 11.3-34 37 40 0.4801.325120.3 41.5 8.6 1.94 139.2
2021 Jul623 32 37.1-35 12 40 0.4831.330120.6 41.1 8.7 1.89 139.9
2021 Jul723 34 58.2-35 47 11 0.4861.334121.0 40.8 8.7 1.85 140.6
2021 Jul823 37 14.8-36 21 10 0.4901.339121.4 40.4 8.7 1.80 141.3
2021 Jul923 39 26.6-36 54 39 0.4931.344121.8 40.0 8.7 1.75 142.1
2021 Jul 1023 41 33.6-37 27 37 0.4971.348122.1 39.7 8.8 1.71 142.9
2021 Jul 1123 43 35.8-3803 0.5001.353122.5 39.3 8.8 1.66 143.7
2021 Jul 1223 45 33.1-38 31 56 0.5041.358122.9 38.9 8.8 1.62 144.6
2021 Jul 1323 47 25.5-393 17 0.5081.363123.3 38.6 8.9 1.57 145.5
2021 Jul 1423 49 12.9-39 346 0.5121.368123.6 38.2 8.9 1.53 146.5
2021 Jul 1523 50 55.3-404 21 0.5161.373124.0 37.8 8.9 1.48 147.5
2021 Jul 1623 52 32.7-40 342 0.5201.379124.4 37.5 9.0 1.44 148.5
2021 Jul 1723 545.1-413 10 0.5241.384124.7 37.1 9.0 1.39 149.6
2021 Jul 1823 55 32.4-41 31 44 0.5281.389125.1 36.8 9.0 1.35 150.7
2021 Jul 1923 56 54.6-41 59 43 0.5331.395125.5 36.4 9.1 1.31 151.9
2021 Jul 2023 58 11.8-42 278 0.5371.400125.8 36.0 9.1 1.27 153.1
2021 Jul 2123 59 23.9-42 53 59 0.5421.406126.2 35.7 9.1 1.23 154.4
2021 Jul 22 00 30.9-43 20 14 0.5461.411126.5 35.3 9.2 1.19 155.7
2021 Jul 23 01 32.7-43 45 55 0.5511.417126.9 35.0 9.2 1.15 157.1
2021 Jul 24 02 29.5-44 110 0.5561.423127.2 34.6 9.3 1.11 158.6
2021 Jul 25 03 21.2-44 35 30 0.5611.429127.6 34.3 9.3 1.07 160.1
2021 Jul 26 047.8-44 59 25 0.5661.435127.9 34.0 9.3 1.04 161.8
2021 Jul 27 04 49.3-45 22 44 0.5711.441128.2 33.6 9.4 1.00 163.5
2021 Jul 28 05 25.7-45 45 27 0.5761.447128.6 33.3 9.4 0.97 165.2
2021 Jul 29 05 57.1-467 34 0.5811.453128.9 33.0 9.4 0.93 167.1
2021 Jul 30 06 23.5-46 294 0.5871.459129.2 32.6 9.5 0.90 169.0
2021 Jul 31 06 44.8-46 49 57 0.5921.465129.5 32.3 9.5 0.87 171.1
2021 Aug1 071.2-47 10 12 0.5981.471129.8 32.0 9.6 0.84 173.2
2021 Aug2 07 12.8-47 29 50 0.6031.477130.1 31.7 9.6 0.81 175.5
2021 Aug3 07 19.5-47 48 50 0.6091.484130.4 31.4 9.6 0.78 177.8
2021 Aug4 07 21.4-487 11 0.6151.490130.7 31.1 9.7 0.75 180.2
2021 Aug5 07 18.7-48 24 53 0.6211.497131.0 30.8 9.7 0.72 182.8
2021 Aug6 07 11.4-48 41 56 0.6261.503131.2 30.5 9.8 0.70 185.4
2021 Aug7 06 59.6-48 58 18 0.6321.510131.5 30.2 9.8 0.68 188.2
2021 Aug8 06 43.5-49 141 0.6391.516131.8 29.9 9.8 0.65 191.0
2021 Aug9 06 23.0-49 292 0.6451.523132.0 29.7 9.9 0.63 194.0
2021 Aug 10 05 58.5-49 43 22 0.6511.529132.2 29.4 9.9 0.61 197.1
2021 Aug 11 05 30.0-49 570 0.6581.536132.5 29.1 10.0 0.59 200.3
說明:
年、月、日 預報日期,以當日香港時間晚上20時 (即是世界時12時)
赤經 曆元 2000年位置 (單位:時、分、秒 )
赤緯 曆元 2000年位置 (單位:度、分、秒 )
距地 彗星距離地球 (單位:天文單位)
距日 彗星距離太陽 (單位:天文單位)
離角 彗星離開太陽的角度 (單位:度)
Phase 太陽、彗星、地球之間夾角 (單位:度)
光度 彗星總光度 (單位:星等)
"/min 彗星在天區移動速度 (單位:每分鐘移動角秒)
PA 彗星移動天極方位角 (單位:度)
彗星軌道根數
T 通過近日點的動力時時間 (以年、月、日及日之小數表示)
q 近日點距離 (單位:天文單位)
e 軌道偏心率 (橢圓:0 < e < 1;拋物線:e = 1;雙曲線:1 < e)
Peri. 近日點幅角 (單位:度)
Node 升交點黃道經度 (單位:度)
Incl. 軌道傾斜角 (單位:度)
本帖最後由 WCYue 於 2020-12-23 21:17 編輯
德亞瑞司特彗星6P/d'Arrest 星曆表
T 2021 Sep 17.7796 TT
q1.354767 Peri. 178.1029
a3.497400 Node138.9350
e0.612636 Incl.19.5123
Ref: MPEC 2015-S97
年月 日 hm s o'" deltaRSun ElongPhase 光度 "/minPA
2021 Aug416 21 10.4 0 55 12 0.7461.447109.5 41.4 10.0 1.46 152.8
2021 Aug516 22 16.0 0 23 50 0.7471.443109.1 41.6 10.0 1.49 151.9
2021 Aug616 23 24.8- 07 45 0.7471.439108.6 41.9 9.9 1.51 151.0
2021 Aug716 24 36.6- 0 39 35 0.7471.435108.2 42.2 9.9 1.53 150.1
2021 Aug816 25 51.4- 1 11 36 0.7481.431107.7 42.4 9.9 1.56 149.3
2021 Aug916 279.4- 1 43 50 0.7481.428107.3 42.7 9.9 1.58 148.4
2021 Aug 1016 28 30.4- 2 16 14 0.7491.424106.9 42.9 9.9 1.60 147.6
2021 Aug 1116 29 54.6- 2 48 47 0.7491.421106.5 43.2 9.9 1.63 146.8
2021 Aug 1216 31 21.8- 3 21 30 0.7501.418106.0 43.4 9.9 1.65 145.9
2021 Aug 1316 32 52.1- 3 54 20 0.7511.414105.6 43.6 9.9 1.67 145.2
2021 Aug 1416 34 25.4- 4 27 18 0.7521.411105.2 43.8 9.9 1.69 144.4
2021 Aug 1516 361.9- 50 21 0.7521.408104.8 44.1 9.9 1.71 143.6
2021 Aug 1616 37 41.4- 5 33 29 0.7531.405104.4 44.3 9.9 1.73 142.8
2021 Aug 1716 39 23.9- 66 42 0.7541.402104.1 44.5 9.9 1.75 142.1
2021 Aug 1816 419.5- 6 39 57 0.7561.399103.7 44.7 9.8 1.77 141.4
2021 Aug 1916 42 58.1- 7 13 14 0.7571.396103.3 44.9 9.8 1.79 140.6
2021 Aug 2016 44 49.7- 7 46 33 0.7581.393102.9 45.0 9.8 1.81 139.9
2021 Aug 2116 46 44.4- 8 19 51 0.7591.391102.6 45.2 9.8 1.83 139.2
2021 Aug 2216 48 42.0- 8 539 0.7611.388102.2 45.4 9.8 1.85 138.5
2021 Aug 2316 50 42.6- 9 26 24 0.7621.386101.9 45.6 9.8 1.87 137.8
2021 Aug 2416 52 46.3- 9 59 37 0.7641.383101.5 45.7 9.8 1.89 137.1
2021 Aug 2516 54 52.9-10 32 46 0.7661.381101.2 45.9 9.8 1.90 136.4
2021 Aug 2616 572.5-115 50 0.7671.379100.8 46.0 9.8 1.92 135.8
2021 Aug 2716 59 15.0-11 38 48 0.7691.377100.5 46.2 9.8 1.94 135.1
2021 Aug 28171 30.5-12 11 39 0.7711.375100.2 46.3 9.8 1.95 134.4
2021 Aug 29173 49.0-12 44 22 0.7731.373 99.9 46.4 9.8 1.97 133.7
2021 Aug 30176 10.5-13 16 56 0.7751.371 99.5 46.6 9.8 1.98 133.0
2021 Aug 31178 34.9-13 49 19 0.7771.369 99.2 46.7 9.8 2.00 132.4
2021 Sep117 112.2-14 21 32 0.7801.368 98.9 46.8 9.8 2.01 131.7
2021 Sep217 13 32.5-14 53 32 0.7821.366 98.6 46.9 9.8 2.02 131.0
2021 Sep317 165.7-15 25 19 0.7851.365 98.3 47.0 9.8 2.04 130.3
2021 Sep417 18 41.8-15 56 51 0.7871.363 98.1 47.1 9.8 2.05 129.7
2021 Sep517 21 20.9-16 288 0.7901.362 97.8 47.2 9.8 2.06 129.0
2021 Sep617 242.8-16 598 0.7931.361 97.5 47.2 9.8 2.07 128.3
2021 Sep717 26 47.5-17 29 51 0.7951.360 97.2 47.3 9.8 2.09 127.6
2021 Sep817 29 35.2-180 14 0.7981.359 96.9 47.4 9.8 2.10 126.9
2021 Sep917 32 25.6-18 30 18 0.8011.358 96.7 47.4 9.8 2.11 126.3
2021 Sep 1017 35 18.9-1901 0.8051.357 96.4 47.5 9.9 2.12 125.6
2021 Sep 1117 38 14.9-19 29 22 0.8081.357 96.2 47.5 9.9 2.12 124.9
2021 Sep 1217 41 13.7-19 58 19 0.8111.356 95.9 47.6 9.9 2.13 124.2
2021 Sep 1317 44 15.2-20 26 53 0.8151.356 95.7 47.6 9.9 2.14 123.5
2021 Sep 1417 47 19.3-20 551 0.8181.355 95.4 47.6 9.9 2.15 122.8
2021 Sep 1517 50 26.1-21 22 43 0.8221.355 95.2 47.7 9.9 2.15 122.1
2021 Sep 1617 53 35.4-21 49 59 0.8251.355 95.0 47.7 9.9 2.16 121.4
2021 Sep 1717 56 47.2-22 16 46 0.8291.355 94.7 47.7 9.9 2.17 120.7
2021 Sep 181801.6-22 434 0.8331.355 94.5 47.7 9.9 2.17 120.0
2021 Sep 19183 18.3-238 52 0.8371.355 94.3 47.7 9.9 2.17 119.3
2021 Sep 20186 37.5-23 34 10 0.8421.355 94.1 47.7 9.9 2.18 118.6
2021 Sep 21189 59.0-23 58 56 0.8461.355 93.9 47.6 10.0 2.18 117.9
說明:
年、月、日 預報日期,以當日香港時間晚上20時 (即是世界時12時)
赤經 曆元 2000年位置 (單位:時、分、秒 )
赤緯 曆元 2000年位置 (單位:度、分、秒 )
距地 彗星距離地球 (單位:天文單位)
距日 彗星距離太陽 (單位:天文單位)
離角 彗星離開太陽的角度 (單位:度)
Phase 太陽、彗星、地球之間夾角 (單位:度)
光度 彗星總光度 (單位:星等)
"/min 彗星在天區移動速度 (單位:每分鐘移動角秒)
PA 彗星移動天極方位角 (單位:度)
彗星軌道根數
T 通過近日點的動力時時間 (以年、月、日及日之小數表示)
q 近日點距離 (單位:天文單位)
e 軌道偏心率 (橢圓:0 < e < 1;拋物線:e = 1;雙曲線:1 < e)
Peri. 近日點幅角 (單位:度)
Node 升交點黃道經度 (單位:度)
Incl. 軌道傾斜角 (單位:度)
本帖最後由 WCYue 於 2021-1-17 23:44 編輯
SOHO 彗星 342P/SOHO 星曆表
T 2021 Oct 19.2525 TT
q0.052109 Peri.72.8800
z0.328561 Node 28.1309
e0.982879 Incl.11.6759
Ref: MPC101101
年月 日 hm s o'" deltaRSun ElongPhase 光度 "/minPA
2021 Aug 3016 297.2-41 177 0.8361.363 94.8 47.6 10.0 2.15 299.2
2021 Aug 3116 25 11.1-40 51 48 0.8371.345 93.1 48.5 9.9 2.12 300.1
2021 Sep116 21 22.2-40 26 10 0.8381.327 91.4 49.5 9.8 2.08 301.0
2021 Sep216 17 40.2-400 17 0.8401.309 89.7 50.4 9.8 2.05 301.9
2021 Sep316 145.1-39 349 0.8411.291 88.0 51.4 9.7 2.02 302.7
2021 Sep416 10 36.6-397 51 0.8421.272 86.3 52.3 9.7 1.99 303.5
2021 Sep5167 14.3-38 41 22 0.8441.253 84.7 53.2 9.6 1.96 304.3
2021 Sep6163 58.0-38 14 46 0.8451.234 83.0 54.2 9.5 1.93 305.1
2021 Sep7160 47.4-37 483 0.8471.215 81.4 55.1 9.5 1.91 305.8
2021 Sep815 57 42.3-37 21 14 0.8481.196 79.7 56.0 9.4 1.88 306.5
2021 Sep915 54 42.2-36 54 21 0.8501.176 78.1 56.9 9.4 1.86 307.2
2021 Sep 1015 51 46.9-36 27 24 0.8511.157 76.5 57.8 9.3 1.83 307.8
2021 Sep 1115 48 56.0-360 24 0.8521.137 74.9 58.7 9.2 1.81 308.4
2021 Sep 1215 469.2-35 33 20 0.8541.117 73.3 59.7 9.1 1.80 308.9
2021 Sep 1315 43 26.2-356 12 0.8551.096 71.7 60.6 9.1 1.78 309.5
2021 Sep 1415 40 46.6-34 390 0.8561.076 70.1 61.5 9.0 1.77 310.0
2021 Sep 1515 38 10.0-34 11 44 0.8571.055 68.5 62.5 8.9 1.76 310.4
2021 Sep 1615 35 36.0-33 44 22 0.8581.034 66.9 63.4 8.8 1.75 310.8
2021 Sep 1715 334.4-33 16 54 0.8591.013 65.3 64.3 8.7 1.74 311.2
2021 Sep 1815 30 34.7-32 49 17 0.8590.991 63.7 65.3 8.6 1.74 311.5
2021 Sep 1915 286.6-32 21 31 0.8600.969 62.1 66.3 8.5 1.74 311.8
2021 Sep 2015 25 39.6-31 53 33 0.8600.947 60.5 67.3 8.4 1.75 312.1
2021 Sep 2115 23 13.3-31 25 22 0.8610.925 58.9 68.3 8.3 1.75 312.3
2021 Sep 2215 20 47.4-30 56 54 0.8610.902 57.3 69.3 8.2 1.77 312.4
2021 Sep 2315 18 21.3-30 288 0.8610.879 55.7 70.4 8.1 1.78 312.6
2021 Sep 2415 15 54.6-29 58 59 0.8610.856 54.0 71.5 8.0 1.80 312.6
2021 Sep 2515 13 26.8-29 29 25 0.8600.832 52.4 72.6 7.9 1.83 312.7
2021 Sep 2615 10 57.4-28 59 22 0.8600.808 50.7 73.8 7.7 1.86 312.7
2021 Sep 27158 25.9-28 28 45 0.8590.784 49.1 75.0 7.6 1.90 312.6
2021 Sep 28155 51.5-27 57 29 0.8580.759 47.4 76.3 7.5 1.95 312.6
2021 Sep 29153 13.8-27 25 29 0.8570.734 45.7 77.6 7.3 2.00 312.4
2021 Sep 30150 31.9-26 52 38 0.8560.708 43.9 79.0 7.2 2.06 312.3
2021 Oct114 57 45.2-26 18 49 0.8550.682 42.2 80.5 7.0 2.13 312.1
2021 Oct214 54 52.7-25 43 55 0.8530.655 40.4 82.0 6.8 2.22 311.9
2021 Oct314 51 53.6-257 45 0.8520.627 38.5 83.7 6.6 2.31 311.7
2021 Oct414 48 46.7-24 30 10 0.8500.599 36.7 85.4 6.4 2.42 311.4
2021 Oct514 45 30.9-23 50 57 0.8490.571 34.7 87.3 6.2 2.54 311.1
2021 Oct614 424.8-239 53 0.8470.541 32.8 89.3 6.0 2.68 310.9
2021 Oct714 38 27.0-22 26 40 0.8450.511 30.7 91.6 5.7 2.84 310.6
2021 Oct814 34 35.5-21 411 0.8440.480 28.6 94.0 5.4 3.03 310.3
2021 Oct914 30 28.4-20 52 31 0.8420.447 26.4 96.7 5.1 3.25 310.0
2021 Oct 1014 263.2-200 44 0.8410.414 24.1 99.8 4.8 3.50 309.7
2021 Oct 1114 21 16.8-1957 0.8410.379 21.7103.2 4.4 3.80 309.4
2021 Oct 1214 165.6-184 58 0.8410.343 19.2107.2 4.0 4.15 309.1
2021 Oct 1314 10 25.1-16 59 26 0.8420.305 16.5112.0 3.5 4.56 308.8
2021 Oct 141449.2-15 47 25 0.8460.265 13.6117.8 2.9 5.07 308.5
2021 Oct 1513 57 10.1-14 27 27 0.8520.223 10.5125.3 2.1 5.70 308.2
2021 Oct 1613 49 17.3-12 57 33 0.8630.177 7.1135.7 1.2 6.49 307.9
2021 Oct 1713 40 18.5-11 15 22 0.8820.127 3.4152.5 -0.2 7.42 307.7
2021 Oct 1813 30 25.5- 9 22 14 0.9220.075 0.7171.2 -2.4 7.51 308.2
2021 Oct 1913 269.0- 8 22 14 1.0090.055 3.1 74.8 -3.6 2.94 111.5
2021 Oct 2013 34 50.2- 9 310 1.0910.100 1.6 16.2 -0.8 7.26 119.2
2021 Oct 2113 44 56.9-10 543 1.1470.152 0.3 1.7 1.1 6.85 118.9
2021 Oct 2213 54 19.7-129 22 1.1910.199 1.9 9.5 2.4 6.24 118.4
2021 Oct 23142 58.4-13 16 50 1.2300.244 3.3 13.6 3.3 5.72 117.8
2021 Oct 2414 110.3-14 17 41 1.2650.285 4.5 16.0 4.1 5.28 117.2
2021 Oct 2514 18 31.7-15 130 1.2990.324 5.6 17.4 4.7 4.92 116.6
2021 Oct 2614 25 37.3-163 37 1.3300.361 6.5 18.2 5.2 4.61 116.0
2021 Oct 2714 32 20.6-16 50 12 1.3610.396 7.3 18.6 5.6 4.34 115.4
2021 Oct 2814 38 44.5-17 33 14 1.3910.430 8.0 18.8 6.1 4.10 114.9
2021 Oct 2914 44 51.1-18 139 1.4200.463 8.6 18.8 6.4 3.89 114.3
2021 Oct 3014 50 42.3-18 50 18 1.4490.495 9.2 18.7 6.7 3.71 113.8
2021 Oct 3114 56 19.6-19 24 57 1.4770.525 9.7 18.5 7.1 3.54 113.2
2021 Nov1151 44.2-19 57 22 1.5050.555 10.1 18.2 7.3 3.38 112.7
2021 Nov2156 57.1-20 27 44 1.5320.584 10.4 17.8 7.6 3.24 112.2
2021 Nov315 11 59.4-20 56 15 1.5590.613 10.7 17.5 7.8 3.11 111.7
2021 Nov415 16 51.8-21 234 1.5860.641 10.9 17.1 8.1 2.99 111.2
2021 Nov515 21 35.1-21 48 20 1.6130.668 11.1 16.7 8.3 2.88 110.8
2021 Nov615 269.7-22 129 1.6390.694 11.3 16.2 8.5 2.78 110.3
2021 Nov715 30 36.4-22 34 39 1.6650.720 11.4 15.8 8.7 2.69 109.8
2021 Nov815 34 55.6-22 55 55 1.6900.746 11.5 15.3 8.9 2.60 109.4
2021 Nov915 397.8-23 164 1.7160.771 11.5 14.9 9.0 2.52 108.9
2021 Nov 1015 43 13.3-23 358 1.7410.796 11.5 14.4 9.2 2.44 108.5
2021 Nov 1115 47 12.6-23 53 14 1.7660.820 11.5 14.0 9.4 2.37 108.1
2021 Nov 1215 516.0-24 10 24 1.7900.844 11.5 13.5 9.5 2.30 107.7
2021 Nov 1315 54 53.7-24 26 43 1.8150.867 11.4 13.1 9.7 2.23 107.2
2021 Nov 1415 58 36.2-24 42 14 1.8390.890 11.3 12.6 9.8 2.17 106.8
2021 Nov 15162 13.7-24 56 59 1.8630.913 11.2 12.2 10.0 2.12 106.5
說明:
年、月、日 預報日期,以當日香港時間晚上20時 (即是世界時12時)
赤經 曆元 2000年位置 (單位:時、分、秒 )
赤緯 曆元 2000年位置 (單位:度、分、秒 )
距地 彗星距離地球 (單位:天文單位)
距日 彗星距離太陽 (單位:天文單位)
離角 彗星離開太陽的角度 (單位:度)
Phase 太陽、彗星、地球之間夾角 (單位:度)
光度 彗星總光度 (單位:星等)
"/min 彗星在天區移動速度 (單位:每分鐘移動角秒)
PA 彗星移動天極方位角 (單位:度)
彗星軌道根數
T 通過近日點的動力時時間 (以年、月、日及日之小數表示)
q 近日點距離 (單位:天文單位)
e 軌道偏心率 (橢圓:0 < e < 1;拋物線:e = 1;雙曲線:1 < e)
Peri. 近日點幅角 (單位:度)
Node 升交點黃道經度 (單位:度)
Incl. 軌道傾斜角 (單位:度)
本帖最後由 WCYue 於 2020-12-23 21:19 編輯
包瑞利彗星19P/Borrelly 星曆表
T 2022 Feb1.7113 TT
q1.305551 Peri. 351.8428
a3.606813 Node 74.3346
e0.638032 Incl.29.3369
Ref: MPC 92984
年月 日 hm s o'" deltaRSun ElongPhase 光度 "/minPA
2021 Nov 13238 49.2-46 59 54 1.1841.606 94.8 37.9 10.0 1.1614.2
2021 Nov 14239 30.7-46 32 38 1.1831.599 94.4 38.1 10.0 1.1815.0
2021 Nov 1523 10 14.7-464 58 1.1831.593 93.9 38.3 9.9 1.2115.8
2021 Nov 1623 111.3-45 36 54 1.1821.587 93.5 38.5 9.9 1.2316.5
2021 Nov 1723 11 50.4-458 26 1.1811.581 93.1 38.7 9.8 1.2517.2
2021 Nov 1823 12 41.9-44 39 35 1.1811.574 92.6 38.8 9.8 1.2717.9
2021 Nov 1923 13 35.7-44 10 21 1.1801.568 92.2 39.0 9.7 1.2918.5
2021 Nov 2023 14 31.9-43 40 43 1.1801.562 91.8 39.2 9.7 1.3219.2
2021 Nov 2123 15 30.3-43 10 42 1.1791.556 91.3 39.4 9.7 1.3419.8
2021 Nov 2223 16 30.9-42 40 19 1.1791.550 90.9 39.6 9.6 1.3620.3
2021 Nov 2323 17 33.6-429 33 1.1781.544 90.5 39.8 9.6 1.3820.9
2021 Nov 2423 18 38.4-41 38 24 1.1781.538 90.1 39.9 9.5 1.4021.4
2021 Nov 2523 19 45.3-416 53 1.1771.532 89.7 40.1 9.5 1.4222.0
2021 Nov 2623 20 54.2-40 350 1.1771.526 89.3 40.3 9.4 1.4522.5
2021 Nov 2723 225.0-402 44 1.1761.520 88.9 40.5 9.4 1.4723.0
2021 Nov 2823 23 17.7-39 307 1.1761.514 88.5 40.6 9.4 1.4923.4
2021 Nov 2923 24 32.3-38 578 1.1761.509 88.1 40.8 9.3 1.5123.9
2021 Nov 3023 25 48.8-38 23 48 1.1751.503 87.7 41.0 9.3 1.5324.3
2021 Dec123 277.0-37 506 1.1751.498 87.3 41.1 9.2 1.5524.8
2021 Dec223 28 27.0-37 163 1.1751.492 86.9 41.3 9.2 1.5825.2
2021 Dec323 29 48.7-36 41 39 1.1741.487 86.5 41.4 9.2 1.6025.6
2021 Dec423 31 12.0-366 54 1.1741.481 86.1 41.6 9.1 1.6226.0
2021 Dec523 32 37.0-35 31 49 1.1741.476 85.8 41.8 9.1 1.6426.3
2021 Dec623 343.6-34 56 23 1.1741.470 85.4 41.9 9.0 1.6626.7
2021 Dec723 35 31.7-34 20 38 1.1731.465 85.0 42.1 9.0 1.6827.1
2021 Dec823 371.3-33 44 32 1.1731.460 84.7 42.2 9.0 1.7027.4
2021 Dec923 38 32.5-3387 1.1731.455 84.3 42.3 8.9 1.7227.7
2021 Dec 1023 405.0-32 31 23 1.1731.450 83.9 42.5 8.9 1.7428.0
2021 Dec 1123 41 38.9-31 54 20 1.1731.445 83.6 42.6 8.8 1.7628.4
2021 Dec 1223 43 14.2-31 16 58 1.1731.440 83.2 42.8 8.8 1.7828.7
2021 Dec 1323 44 50.9-30 39 18 1.1731.435 82.9 42.9 8.8 1.8029.0
2021 Dec 1423 46 28.8-301 20 1.1731.430 82.6 43.0 8.7 1.8229.2
2021 Dec 1523 488.0-29 234 1.1731.426 82.2 43.2 8.7 1.8429.5
2021 Dec 1623 49 48.4-28 44 30 1.1731.421 81.9 43.3 8.7 1.8629.8
2021 Dec 1723 51 30.0-285 39 1.1741.417 81.6 43.4 8.6 1.8830.0
2021 Dec 1823 53 12.8-27 26 31 1.1741.412 81.2 43.5 8.6 1.8930.3
2021 Dec 1923 54 56.7-26 477 1.1741.408 80.9 43.6 8.6 1.9130.5
2021 Dec 2023 56 41.8-267 27 1.1751.403 80.6 43.8 8.5 1.9330.8
2021 Dec 2123 58 28.0-25 27 30 1.1751.399 80.3 43.9 8.5 1.9531.0
2021 Dec 22 00 15.3-24 47 18 1.1761.395 79.9 44.0 8.5 1.9731.3
2021 Dec 23 023.6-246 51 1.1761.391 79.6 44.1 8.4 1.9831.5
2021 Dec 24 03 53.0-23 269 1.1771.387 79.3 44.2 8.4 2.0031.7
2021 Dec 25 05 43.5-22 45 13 1.1771.383 79.0 44.3 8.4 2.0231.9
2021 Dec 26 07 34.9-2243 1.1781.379 78.7 44.4 8.3 2.0332.1
2021 Dec 27 09 27.4-21 22 39 1.1791.375 78.4 44.5 8.3 2.0532.4
2021 Dec 28 0 11 20.9-20 413 1.1801.372 78.1 44.6 8.3 2.0632.6
2021 Dec 29 0 13 15.4-19 59 13 1.1811.368 77.8 44.6 8.3 2.0832.8
2021 Dec 30 0 15 10.9-19 17 12 1.1821.365 77.5 44.7 8.2 2.0933.0
2021 Dec 31 0 177.3-18 34 59 1.1831.361 77.3 44.8 8.2 2.1133.2
2022 Jan1 0 194.7-17 52 34 1.1841.358 77.0 44.9 8.2 2.1233.4
2022 Jan2 0 213.1-17 100 1.1851.355 76.7 44.9 8.2 2.1433.6
2022 Jan3 0 232.4-16 27 15 1.1861.352 76.4 45.0 8.1 2.1533.8
2022 Jan4 0 252.6-15 44 20 1.1881.349 76.1 45.1 8.1 2.1634.1
2022 Jan5 0 273.8-151 17 1.1891.346 75.9 45.1 8.1 2.1734.3
2022 Jan6 0 295.9-14 186 1.1911.343 75.6 45.2 8.1 2.1934.5
2022 Jan7 0 318.9-13 34 47 1.1931.340 75.3 45.2 8.1 2.2034.7
2022 Jan8 0 33 12.8-12 51 21 1.1941.337 75.1 45.3 8.0 2.2134.9
2022 Jan9 0 35 17.6-127 49 1.1961.335 74.8 45.3 8.0 2.2235.1
2022 Jan 10 0 37 23.3-11 24 11 1.1981.332 74.6 45.4 8.0 2.2335.3
2022 Jan 11 0 39 29.9-10 40 28 1.2001.330 74.3 45.4 8.0 2.2435.5
2022 Jan 12 0 41 37.3- 9 56 40 1.2021.328 74.1 45.4 8.0 2.2535.7
2022 Jan 13 0 43 45.6- 9 12 49 1.2041.326 73.8 45.4 8.0 2.2635.9
2022 Jan 14 0 45 54.8- 8 28 55 1.2071.324 73.6 45.5 8.0 2.2736.1
2022 Jan 15 0 484.8- 7 44 58 1.2091.322 73.3 45.5 7.9 2.2736.3
2022 Jan 16 0 50 15.8- 710 1.2111.320 73.1 45.5 7.9 2.2836.5
2022 Jan 17 0 52 27.5- 6 170 1.2141.318 72.9 45.5 7.9 2.2936.8
2022 Jan 18 0 54 40.2- 5 331 1.2171.317 72.6 45.5 7.9 2.2937.0
2022 Jan 19 0 56 53.7- 4 491 1.2191.315 72.4 45.5 7.9 2.3037.2
2022 Jan 20 0 598.1- 452 1.2221.314 72.2 45.5 7.9 2.3137.4
2022 Jan 21 11 23.4- 3 215 1.2251.312 72.0 45.5 7.9 2.3137.6
2022 Jan 22 13 39.6- 2 37 11 1.2281.311 71.7 45.5 7.9 2.3237.9
2022 Jan 23 15 56.7- 1 53 19 1.2321.310 71.5 45.4 7.9 2.3238.1
2022 Jan 24 18 14.7- 19 31 1.2351.309 71.3 45.4 7.9 2.3238.3
2022 Jan 25 1 10 33.6- 0 25 47 1.2381.308 71.1 45.4 7.9 2.3338.6
2022 Jan 26 1 12 53.5 0 17 51 1.2421.308 70.9 45.3 7.9 2.3338.8
2022 Jan 27 1 15 14.3 11 24 1.2451.307 70.7 45.3 7.9 2.3339.1
2022 Jan 28 1 17 36.0 1 44 51 1.2491.307 70.4 45.3 7.9 2.3439.3
2022 Jan 29 1 19 58.7 2 28 10 1.2531.306 70.2 45.2 7.9 2.3439.6
2022 Jan 30 1 22 22.4 3 11 22 1.2571.306 70.0 45.2 7.9 2.3439.8
2022 Jan 31 1 24 47.0 3 54 26 1.2611.306 69.8 45.1 7.9 2.3440.1
2022 Feb1 1 27 12.7 4 37 20 1.2651.306 69.6 45.0 7.9 2.3440.4
2022 Feb2 1 29 39.3 5 204 1.2701.306 69.4 45.0 7.9 2.3440.7
2022 Feb3 1 327.0 62 39 1.2741.306 69.3 44.9 7.9 2.3440.9
2022 Feb4 1 34 35.7 6 451 1.2781.306 69.1 44.8 7.9 2.3441.2
2022 Feb5 1 375.4 7 27 13 1.2831.306 68.9 44.8 7.9 2.3441.5
2022 Feb6 1 39 36.1 89 11 1.2881.307 68.7 44.7 8.0 2.3441.8
2022 Feb7 1 427.9 8 50 57 1.2931.307 68.5 44.6 8.0 2.3442.1
2022 Feb8 1 44 40.7 9 32 29 1.2971.308 68.3 44.5 8.0 2.3442.4
2022 Feb9 1 47 14.6 10 13 46 1.3031.309 68.1 44.4 8.0 2.3342.7
2022 Feb 10 1 49 49.6 10 54 49 1.3081.310 68.0 44.3 8.0 2.3343.0
2022 Feb 11 1 52 25.7 11 35 36 1.3131.311 67.8 44.2 8.0 2.3343.3
2022 Feb 12 1 552.8 12 167 1.3181.312 67.6 44.1 8.0 2.3343.7
2022 Feb 13 1 57 41.1 12 56 21 1.3241.313 67.4 44.0 8.1 2.3244.0
2022 Feb 14 20 20.4 13 36 17 1.3291.315 67.3 43.9 8.1 2.3244.3
2022 Feb 15 230.9 14 15 56 1.3351.316 67.1 43.7 8.1 2.3144.7
2022 Feb 16 25 42.6 14 55 16 1.3411.318 66.9 43.6 8.1 2.3145.0
2022 Feb 17 28 25.4 15 34 18 1.3471.319 66.8 43.5 8.2 2.3045.4
2022 Feb 18 2 119.4 16 130 1.3531.321 66.6 43.4 8.2 2.3045.7
2022 Feb 19 2 13 54.6 16 51 22 1.3591.323 66.4 43.2 8.2 2.2946.1
2022 Feb 20 2 16 40.9 17 29 23 1.3651.325 66.3 43.1 8.2 2.2946.4
2022 Feb 21 2 19 28.5 1874 1.3711.327 66.1 43.0 8.3 2.2846.8
2022 Feb 22 2 22 17.3 18 44 23 1.3781.329 66.0 42.8 8.3 2.2847.2
2022 Feb 23 2 257.4 19 21 20 1.3841.331 65.8 42.7 8.3 2.2747.6
2022 Feb 24 2 27 58.7 19 57 55 1.3911.334 65.7 42.5 8.3 2.2748.0
2022 Feb 25 2 30 51.4 20 347 1.3981.336 65.5 42.4 8.4 2.2648.4
2022 Feb 26 2 33 45.3 219 57 1.4051.339 65.3 42.2 8.4 2.2548.8
2022 Feb 27 2 36 40.5 21 45 22 1.4121.342 65.2 42.1 8.4 2.2549.2
2022 Feb 28 2 39 37.0 22 20 24 1.4191.344 65.0 41.9 8.5 2.2449.6
2022 Mar1 2 42 34.9 22 551 1.4261.347 64.9 41.8 8.5 2.2350.1
2022 Mar2 2 45 34.0 23 29 14 1.4331.350 64.7 41.6 8.5 2.2350.5
2022 Mar3 2 48 34.6 2432 1.4401.353 64.6 41.4 8.6 2.2250.9
2022 Mar4 2 51 36.5 24 36 24 1.4481.356 64.4 41.3 8.6 2.2151.4
2022 Mar5 2 54 39.7 259 20 1.4551.360 64.3 41.1 8.7 2.2151.8
2022 Mar6 2 57 44.3 25 41 50 1.4631.363 64.1 40.9 8.7 2.2052.3
2022 Mar7 30 50.2 26 13 54 1.4711.367 64.0 40.7 8.7 2.1952.7
2022 Mar8 33 57.6 26 45 31 1.4781.370 63.8 40.6 8.8 2.1853.2
2022 Mar9 376.2 27 16 40 1.4861.374 63.7 40.4 8.8 2.1853.7
2022 Mar 10 3 10 16.3 27 47 22 1.4941.377 63.6 40.2 8.8 2.1754.2
2022 Mar 11 3 13 27.7 28 17 37 1.5021.381 63.4 40.0 8.9 2.1654.6
2022 Mar 12 3 16 40.4 28 47 23 1.5101.385 63.3 39.8 8.9 2.1555.1
2022 Mar 13 3 19 54.6 29 16 40 1.5191.389 63.1 39.7 9.0 2.1455.6
2022 Mar 14 3 23 10.0 29 45 30 1.5271.393 63.0 39.5 9.0 2.1456.1
2022 Mar 15 3 26 26.9 30 13 50 1.5351.397 62.8 39.3 9.1 2.1356.6
2022 Mar 16 3 29 45.0 30 41 41 1.5441.401 62.7 39.1 9.1 2.1257.1
2022 Mar 17 3 334.6 3192 1.5521.406 62.6 38.9 9.2 2.1157.7
2022 Mar 18 3 36 25.4 31 35 54 1.5611.410 62.4 38.7 9.2 2.1058.2
2022 Mar 19 3 39 47.6 322 17 1.5701.415 62.3 38.5 9.2 2.1058.7
2022 Mar 20 3 43 11.1 32 289 1.5791.419 62.1 38.3 9.3 2.0959.3
2022 Mar 21 3 46 35.9 32 53 30 1.5881.424 62.0 38.1 9.3 2.0859.8
2022 Mar 22 3 502.0 33 18 22 1.5971.428 61.8 38.0 9.4 2.0760.3
2022 Mar 23 3 53 29.4 33 42 43 1.6061.433 61.7 37.8 9.4 2.0660.9
2022 Mar 24 3 56 58.0 346 33 1.6151.438 61.5 37.6 9.5 2.0661.4
2022 Mar 25 40 28.0 34 29 52 1.6241.443 61.4 37.4 9.5 2.0562.0
2022 Mar 26 43 59.1 34 52 40 1.6331.448 61.3 37.2 9.6 2.0462.6
2022 Mar 27 47 31.5 35 14 57 1.6431.453 61.1 37.0 9.6 2.0363.1
2022 Mar 28 4 115.1 35 36 43 1.6521.458 61.0 36.8 9.7 2.0263.7
2022 Mar 29 4 14 39.9 35 57 57 1.6621.463 60.8 36.6 9.7 2.0264.3
2022 Mar 30 4 18 15.9 36 18 40 1.6711.468 60.7 36.4 9.8 2.0164.9
2022 Mar 31 4 21 52.9 36 38 52 1.6811.473 60.5 36.2 9.8 2.0065.5
2022 Apr1 4 25 31.1 36 58 32 1.6911.479 60.4 36.0 9.9 1.9966.0
2022 Apr2 4 29 10.3 37 17 40 1.7011.484 60.2 35.8 9.9 1.9866.6
2022 Apr3 4 32 50.5 37 36 17 1.7101.490 60.1 35.6 10.0 1.9867.2
說明:
年、月、日 預報日期,以當日香港時間晚上20時 (即是世界時12時)
赤經 曆元 2000年位置 (單位:時、分、秒 )
赤緯 曆元 2000年位置 (單位:度、分、秒 )
距地 彗星距離地球 (單位:天文單位)
距日 彗星距離太陽 (單位:天文單位)
離角 彗星離開太陽的角度 (單位:度)
Phase 太陽、彗星、地球之間夾角 (單位:度)
光度 彗星總光度 (單位:星等)
"/min 彗星在天區移動速度 (單位:每分鐘移動角秒)
PA 彗星移動天極方位角 (單位:度)
彗星軌道根數
T 通過近日點的動力時時間 (以年、月、日及日之小數表示)
q 近日點距離 (單位:天文單位)
e 軌道偏心率 (橢圓:0 < e < 1;拋物線:e = 1;雙曲線:1 < e)
Peri. 近日點幅角 (單位:度)
Node 升交點黃道經度 (單位:度)
Incl. 軌道傾斜角 (單位:度)
本帖最後由 WCYue 於 2021-1-17 23:54 編輯
倫納德彗星C/2021 Leonard 星曆表
T 2022 Jan3.3072 TT
q0.614984 Peri. 225.0906
z -0.000081 Node255.8736
e1.000050 Incl. 132.6859
Ref: MPEC 2021-A99
年月 日 hm s o'" deltaRSun ElongPhase 光度 "/minPA
2021 Nov9123 51.5 34 12 53 1.2841.260 65.8 45.8 10.0 0.91 103.0
2021 Nov 10125 35.9 347 57 1.2501.245 66.3 46.8 9.9 0.94 102.7
2021 Nov 11127 24.6 342 55 1.2161.229 66.8 47.8 9.8 0.98 102.5
2021 Nov 12129 18.1 33 57 44 1.1811.214 67.3 48.8 9.7 1.03 102.3
2021 Nov 1312 11 16.8 33 52 23 1.1471.198 67.8 49.9 9.6 1.07 102.2
2021 Nov 1412 13 21.2 33 46 50 1.1121.183 68.2 51.0 9.5 1.13 102.1
2021 Nov 1512 15 32.1 33 411 1.0771.167 68.6 52.1 9.3 1.19 102.0
2021 Nov 1612 17 50.3 33 34 54 1.0421.152 69.0 53.3 9.2 1.26 102.0
2021 Nov 1712 20 16.4 33 28 25 1.0071.136 69.4 54.5 9.1 1.34 102.0
2021 Nov 1812 22 51.6 33 21 29 0.9711.121 69.8 55.8 8.9 1.42 102.1
2021 Nov 1912 25 37.0 33 141 0.9351.105 70.1 57.2 8.8 1.52 102.3
2021 Nov 2012 28 33.9 335 55 0.9001.090 70.4 58.6 8.6 1.64 102.5
2021 Nov 2112 31 43.8 32 571 0.8641.075 70.6 60.1 8.5 1.77 102.7
2021 Nov 2212 358.5 32 47 12 0.8281.059 70.8 61.7 8.3 1.91 103.0
2021 Nov 2312 38 50.1 32 36 15 0.7921.044 70.9 63.3 8.2 2.08 103.4
2021 Nov 2412 42 51.1 32 23 55 0.7561.029 70.9 65.1 8.0 2.28 103.9
2021 Nov 2512 47 14.5 329 55 0.7201.014 70.9 67.0 7.8 2.51 104.4
2021 Nov 2612 523.8 31 53 50 0.6840.998 70.8 69.0 7.7 2.78 105.0
2021 Nov 2712 57 23.0 31 35 13 0.6480.983 70.5 71.1 7.5 3.10 105.7
2021 Nov 28133 17.4 31 13 25 0.6120.968 70.2 73.4 7.3 3.47 106.5
2021 Nov 29139 52.9 30 47 39 0.5760.953 69.6 75.9 7.1 3.92 107.4
2021 Nov 3013 17 17.0 30 16 51 0.5400.939 68.9 78.6 6.9 4.47 108.4
2021 Dec113 25 38.4 29 39 39 0.5050.924 68.0 81.6 6.7 5.12 109.5
2021 Dec213 357.9 28 54 14 0.4710.909 66.7 84.9 6.5 5.93 110.7
2021 Dec313 45 58.5 27 58 10 0.4370.895 65.2 88.5 6.2 6.91 112.1
2021 Dec413 58 25.3 26 48 15 0.4030.881 63.2 92.7 6.0 8.13 113.6
2021 Dec514 12 46.2 25 20 14 0.3710.866 60.7 97.4 5.7 9.63 115.3
2021 Dec614 29 20.8 23 28 37 0.3410.852 57.6102.7 5.5 11.48 117.1
2021 Dec714 48 29.4 216 37 0.3130.839 53.7108.8 5.2 13.71 119.1
2021 Dec815 10 29.8 186 30 0.2870.825 48.9115.9 5.0 16.31 121.0
2021 Dec915 35 31.9 14 217 0.2660.812 43.1123.9 4.7 19.16 122.9
2021 Dec 10163 30.8 9 46 56 0.2490.798 36.5132.9 4.5 21.93 124.5
2021 Dec 1116 33 58.5 4 28 34 0.2380.786 29.1142.4 4.3 24.08 125.6
2021 Dec 121760.8- 1 17 46 0.2340.773 22.0151.5 4.2 25.02 125.9
2021 Dec 1317 38 22.9- 765 0.2370.761 16.5158.4 4.2 24.42 125.4
2021 Dec 14189 44.8-12 29 25 0.2470.748 14.8160.4 4.2 22.48 124.2
2021 Dec 1518 38 59.3-179 17 0.2630.737 17.0157.0 4.3 19.75 122.5
2021 Dec 16195 23.7-20 59 13 0.2840.725 20.9151.1 4.4 16.83 120.5
2021 Dec 1719 28 40.8-2424 0.3100.714 24.8144.7 4.5 14.10 118.5
2021 Dec 1819 48 53.2-26 255 0.3390.704 28.3138.6 4.6 11.72 116.6
2021 Dec 19206 15.1-28 16 28 0.3700.694 31.1132.8 4.8 9.73 114.8
2021 Dec 2020 216.0-29 43 29 0.4030.684 33.4127.6 4.9 8.09 113.3
2021 Dec 2120 33 46.2-30 523 0.4380.675 35.3122.7 5.0 6.76 112.0
2021 Dec 2220 44 34.8-31 46 39 0.4740.667 36.7118.2 5.1 5.67 111.0
2021 Dec 2320 53 48.6-32 30 40 0.5100.659 37.7114.0 5.2 4.78 110.2
2021 Dec 24211 41.9-336 35 0.5480.651 38.5110.0 5.3 4.05 109.6
2021 Dec 25218 26.7-33 36 16 0.5850.644 39.0106.1 5.4 3.43 109.1
2021 Dec 2621 14 13.2-3414 0.6230.638 39.3102.5 5.5 2.92 108.9
2021 Dec 2721 199.8-34 220 0.6610.633 39.5 98.9 5.6 2.49 108.8
2021 Dec 2821 23 23.3-34 39 51 0.6990.628 39.5 95.5 5.7 2.12 108.9
2021 Dec 2921 26 59.7-34 55 12 0.7370.624 39.3 92.1 5.8 1.80 109.2
2021 Dec 3021 303.7-358 28 0.7750.621 39.1 88.8 5.9 1.53 109.6
2021 Dec 3121 32 39.6-35 200 0.8130.618 38.8 85.6 6.0 1.30 110.3
2022 Jan121 34 50.9-35 305 0.8510.616 38.4 82.5 6.0 1.09 111.1
2022 Jan221 36 40.7-35 38 54 0.8880.615 38.0 79.4 6.1 0.91 112.1
2022 Jan321 38 11.4-35 46 38 0.9250.615 37.4 76.4 6.2 0.76 113.5
2022 Jan421 39 25.5-35 53 23 0.9620.616 36.9 73.5 6.3 0.62 115.2
2022 Jan521 40 24.9-35 59 18 0.9980.617 36.3 70.6 6.4 0.50 117.3
2022 Jan621 41 11.4-364 25 1.0340.619 35.6 67.7 6.5 0.39 120.2
2022 Jan721 41 46.5-368 51 1.0690.622 35.0 65.0 6.6 0.30 124.2
2022 Jan821 42 11.7-36 12 38 1.1030.625 34.3 62.3 6.7 0.23 130.0
2022 Jan921 42 28.1-36 15 49 1.1370.630 33.6 59.7 6.8 0.16 139.3
2022 Jan 1021 42 36.9-36 18 28 1.1710.635 32.8 57.1 6.9 0.11 155.8
2022 Jan 1121 42 39.1-36 20 36 1.2030.640 32.1 54.7 7.0 0.08 185.2
2022 Jan 1221 42 35.5-36 22 16 1.2350.647 31.4 52.3 7.1 0.08 220.8
2022 Jan 1321 42 27.0-36 23 29 1.2670.654 30.6 50.0 7.2 0.10 244.8
2022 Jan 1421 42 14.3-36 24 18 1.2970.662 29.9 47.8 7.3 0.13 258.0
2022 Jan 1521 41 58.0-36 24 45 1.3270.670 29.1 45.7 7.4 0.15 265.9
2022 Jan 1621 41 38.6-36 24 50 1.3560.679 28.4 43.6 7.5 0.17 271.1
2022 Jan 1721 41 16.8-36 24 36 1.3850.688 27.7 41.7 7.6 0.19 274.8
2022 Jan 1821 40 52.8-36 244 1.4120.698 27.0 39.8 7.7 0.21 277.7
2022 Jan 1921 40 27.2-36 23 15 1.4390.708 26.3 38.0 7.8 0.22 280.1
2022 Jan 2021 400.2-36 22 11 1.4660.719 25.7 36.4 7.9 0.24 282.1
2022 Jan 2121 39 32.2-36 20 53 1.4910.730 25.0 34.8 8.0 0.25 283.8
2022 Jan 2221 393.4-36 19 23 1.5160.741 24.4 33.3 8.1 0.25 285.3
2022 Jan 2321 38 34.0-36 17 41 1.5400.753 23.8 31.9 8.2 0.26 286.7
2022 Jan 2421 384.3-36 15 49 1.5630.765 23.3 30.5 8.3 0.26 288.0
2022 Jan 2521 37 34.4-36 13 47 1.5860.778 22.8 29.3 8.4 0.27 289.1
2022 Jan 2621 374.5-36 11 38 1.6080.790 22.3 28.2 8.5 0.27 290.2
2022 Jan 2721 36 34.7-369 21 1.6290.803 21.8 27.1 8.6 0.27 291.2
2022 Jan 2821 365.0-366 58 1.6500.817 21.4 26.2 8.7 0.27 292.1
2022 Jan 2921 35 35.5-364 29 1.6690.830 21.1 25.3 8.8 0.27 293.0
2022 Jan 3021 356.4-361 57 1.6890.844 20.8 24.5 8.9 0.27 293.8
2022 Jan 3121 34 37.6-35 59 20 1.7070.858 20.6 23.8 9.0 0.26 294.5
2022 Feb121 349.2-35 56 41 1.7250.872 20.4 23.2 9.1 0.26 295.1
2022 Feb221 33 41.3-35 53 59 1.7420.886 20.3 22.6 9.2 0.26 295.7
2022 Feb321 33 13.7-35 51 16 1.7590.900 20.2 22.2 9.3 0.26 296.2
2022 Feb421 32 46.6-35 48 32 1.7750.915 20.2 21.8 9.4 0.25 296.7
2022 Feb521 32 19.9-35 45 48 1.7900.929 20.2 21.5 9.4 0.25 297.0
2022 Feb621 31 53.6-35 433 1.8050.944 20.3 21.2 9.5 0.25 297.3
2022 Feb721 31 27.8-35 40 20 1.8190.959 20.4 21.0 9.6 0.24 297.5
2022 Feb821 312.3-35 37 37 1.8330.974 20.6 20.9 9.7 0.24 297.7
2022 Feb921 30 37.3-35 34 57 1.8460.989 20.9 20.8 9.8 0.24 297.8
2022 Feb 1021 30 12.5-35 32 18 1.8581.004 21.2 20.8 9.9 0.24 297.7
2022 Feb 1121 29 48.2-35 29 42 1.8701.019 21.6 20.8 9.9 0.23 297.7
2022 Feb 1221 29 24.1-35 278 1.8821.034 22.0 20.9 10.0 0.23 297.5
說明:
年、月、日 預報日期,以當日香港時間晚上20時 (即是世界時12時)
赤經 曆元 2000年位置 (單位:時、分、秒 )
赤緯 曆元 2000年位置 (單位:度、分、秒 )
距地 彗星距離地球 (單位:天文單位)
距日 彗星距離太陽 (單位:天文單位)
離角 彗星離開太陽的角度 (單位:度)
Phase 太陽、彗星、地球之間夾角 (單位:度)
光度 彗星總光度 (單位:星等)
"/min 彗星在天區移動速度 (單位:每分鐘移動角秒)
PA 彗星移動天極方位角 (單位:度)
彗星軌道根數
T 通過近日點的動力時時間 (以年、月、日及日之小數表示)
q 近日點距離 (單位:天文單位)
e 軌道偏心率 (橢圓:0 < e < 1;拋物線:e = 1;雙曲線:1 < e)
Peri. 近日點幅角 (單位:度)
Node 升交點黃道經度 (單位:度)
Incl. 軌道傾斜角 (單位:度)
近地彗星光度計算除了正常根據彗星位置計算它的光度變化之外,當彗星位於地球和太陽之間,氣體與灰塵的光比 (gas-to-dust light ratio) δ90為0.30時,發生正向散射 (forward scattering) 效果。
正向散射可以使背光彗星看起來的亮度明顯增強,因為灰塵和冰晶正在反射並通過向觀測者散射光來增強彗星的可見光亮程度。
倫納德彗星光度變化預測 (下圖) 的紅色曲線是倫納德彗星的預測光度變化,附加的綠色曲線顯示正向散射光度增強效果。
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