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TCP J18102829-2729590 = Nova in Sagittarius

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發表於 2016-10-25 06:23:03 | 顯示全部樓層 |閱讀模式
AAVSO Alert Notice 560

October 24, 2016

TCP J18102829-2729590 = Nova in Sagittarius


Event: Nova in Sagittarius = TCP J18102829-2729590

Discovered by: Koichi Itagaki (Yamagata, Japan) (reported to CBAT
via S. Nakano (Teppo-cho, Yamagata, Japan))

Discovery magnitude: 10.7 unfiltered CCD, using 180-mm f/4.0 lens

Discovery date: 2016 October 20.383 UT
  
Coordinates (2000.0): R.A. 18 10 28.29  Dec. -27 29 59.0

Spectra: Spectroscopy indicating that TCP J18102829-2729590 is a
classical nova in the early optically thick stage was obtained 2016
Oct. 20 UT by P. Lukas (International Centre for Radio Astronomy
Research, Univ. Western Australia; ARAS Group) (ATel #9658; note
that the date is given there as Oct 10.24, but the spectrum image
shows Oct. 20). His spectrum, uncorrected for instrument response,
may be seen at
https://groups.yahoo.com/neo/groups/spectro-l/conversations/messages/18546

Observing recommendations: Observations of all types (visual, CCD,
DSLR, spectroscopy) and all bands as instrumentation permits are
strongly encouraged as the nova evolves.

Observations reported to the AAVSO:
2016 Oct. 4.447 UT <13.0 (Itagaki, via CBET 4332);
20.391, 10.5 (T. Kojima, Gunma, Japan, patrol frame; via CBET 4332);
20.4310, 10.95 V (S. Kiyota, Kamagaya, Japan, using 070-m f/6.6 CDK
astrograph + FLI PL09000 CCD, iTelescope @ NSW, Australia remotely;
via TOCP page);
20.4310, 10.24 Ic (Kiyota, as above);
20.48542, 11.0 (A. Pearce, Nedlands, W. Australia);
21.06340, 10.96 B +/-0.08 (S. O'Connor, St. George, Bermuda);
21.99306, 9.1 (C. Adib, Porto Alegre, Brazil);
22.04880, 9.51 B +/-0.03 (O'Connor);
22.04990, 8.92 V +/-0.03 (O'Connor);
22.05990, 8.622 R +/-0.06 (O'Connor);
22.06110, 8.27 I +/-0.05 (O'Connor);
22.47920, 8.6 (Pearce);
22.55350, 8.7 (Pearce);
23.08333, 8.4 (P. Collins, Flagstaff, AZ);
23.368, 7.7 (Itakagi, via CBET 4332);
23.40795, 8.038 V +/-0.005 (T. Bohlsen, Armidale, NSW, Australia);
23.41097, 8.751 B +/-0.007 (Bohlsen);
23.4187, 7.9 unfiltered CCD (A. Takao, Kitakyushu, Japan; via TOCP
page);
23.45660, 8.62 B +/-0.03 (O'Connor);
23.45800, 8.02 V +/-0.02 (O'Connor);
23.45900, 7.65 R +/-0.05 (O'Connor);
23.48472, 8.0 (Pearce);
23.50082, 8.0 (D. Benn, Klemzig, S. Australia);
23.99236, 7.8 (L. Shotter, Uniontown, PA);
24.42292, 7.858 V +/-0.006 (Bohlsen);
24.42427, 8.743 B +/-0.008 (Bohlsen);
24.54306, 7.9 (Pearce);
        
Charts: Charts with a comparison star sequence for
TCP J18102829-2729590 may be created using the AAVSO Variable Star
Plotter (VSP) at https://www.aavso.org/vsp. Be sure to include the
spaces in the name as shown.

Submit observations: Please submit observations to the AAVSO
International Database using the name TCP J18102829-2729590. Be
sure to include spaces in name as shown. Once a name is announced
in a CBAT IAU Circular, please use that name.

Notes:
a. Announced in IAU Central Bureau for Astronomical Telegrams
Central Bureau Electronic Telegram 4332 (Daniel W. E. Green, ed.).
Designated TCP J18102829-2729590 when posted to the IAU CBAT
Transient Object Confirmation Page (TOCP) at
http://www.cbat.eps.harvard.edu/unconf/tocp.html. Much of the
information in this Alert Notice is taken from CBET 4332, the TOCP
page, or ATel #9658 (http://www.astronomerstelegram.org/?read=9658).

b. K. Itagaki used a 0.60-m f/5.7 reflector to confirm the object
immediately after taking the discovery image.

c. P. Schmeer (Bischmisheim, Germany) reports that there are two
Initial Gaia Source List stars (of 20 mag) less than 1" from the
reported position of the nova.

d. images
- K. Itagaki, discovery image, 2016 Oct. 20.383 UT:
http://www.k-itagaki.jp/sgr.jpg
- T. Kojima, 2016 Oct. 20.391 UT: http://tinyurl.com/hretdl2
- S. Kiyota, 2016 Oct. 20.4310 UT:
http://meineko.sakura.ne.jp/ccd/TCP_J18102829-2729590.jpg

Congratulations to Koichi Itagaki on his latest discovery!


This AAVSO Alert Notice was compiled by Elizabeth O. Waagen.

----------------------------------
SUBMIT OBSERVATIONS TO THE AAVSO

Information on submitting observations to the AAVSO may be found at:
https://www.aavso.org/webobs

ALERT NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION

An Alert Notice archive is available at the following URL:
https://www.aavso.org/alert-notice-archive

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