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AAVSO Alert Notice 516 April 2, 2015
Nova Oph 2015 = PNV J17291350-1846120
Event: Nova Oph 2015 = PNV J17291350-1846120
Discovered by: Yukio Sakurai, Ibaraki-ken, Japan
Discovery magnitude: 12.2 unfiltered, using 180-mm f/2.8lens
Discovery date: 2015 March 29.766 UT
Coordinates: R.A. 17 29 13.58 Dec. -18 46 11.7 (2000.0)
A spectrum by K. Ayani (Bisei Astronomical Observatory,Ibara, Okayama, Japan) on Mar. 30.8 UT confirmed Fujii's findings, including NIII and O I emission; it may be seen at
Observing recommendations: Observations of all types(visual, CCD, DSLR, spectroscopy) are strongly encouraged as this nova evolves.
Observations reported to the AAVSO: 2105 Mar. 27.62778 UT, 13.7 TG (KBJ, R. Kaufman, Bright,VIC, Australia); 28.777, <12.5 (T. Kojima, Gunma-ken, Japan, using 150-mmf/2.8 lens, via TOCP); 29.781, 12.5 (Kojima, via TOCP); 30.4187, 12.0 V (A.Valvasori and F. Briganti, remotely with iTelescope Newton 250mm f/3,4 and CCDST-10ME, New Mexico MPC H06, via TOCP); 30.540, 12.26 V (KSI, S. Kiyota,Kamagaya, Japan, via TOCP); 30.540, 11.57 Ic (Kiyota, via TOCP); 30.639, 12.7unfiltered CCD (T. Noguchi, Chiba-ken, Japan, via TOCP); 30.771, 11.9(T.Kojima, Gunma-ken, Japan, via TOCP); 31.117, 12.0 (G. Masi, remotely using a43-cm telescope at Ceccano, Italy, CBET 4086); 31.41435, 11.947 V +/-0.005(HMB, J. Hambsch, Mol, Belgium, remotely at San Pedro de Atacama, Chile);31.41476, 11.931 V +/-0.008 (Hambsch); 31.41515, 10.878 I +/-0.025 (Hambsch);31.41544, 10.872 I +/-0.010 (Hambsch); 31.57222, 11.8 TG (Kaufman); 31.78750,11.9 (PEX, A. Pearce, Nedlands, WA, Australia); Apr. 01.077, 12.71 B (U. Munari(Astron. Obs. Padova) and S. Dallaporta (ANS Collaboration), CBET 4086); 01.077, 11.93V (Munari and Dallaporta, CBET 4086); 01.077, 11.38 Rc (Munari and Dallaporta,CBET 4086); 01.077, 10.89 Ic (Munari and Dallaporta, CBET 4086); 01.117, 12.69B (Munari and Dallaporta, CBET 4086);01.117, 11.94 V (Munari and Dallaporta, CBET 4086); 01.117, 11.39 Rc (Munariand Dallaporta, CBET 4086); 01.117, 10.90 Ic (Munari and Dallaporta, CBET4086); 01.13889, 11.7 (WKL, K. Wenzel, Grossostheim, Germany); 01.43730, 11.94V +/-0.03 (OCN, S. O'Connor, St. George, Bermuda); 01.43870, 11.30 R +/-0.08(O'Connor); 01.44010, 10.77 I +/-0.06 (O'Connor);
Submit observations: Please submit observations to theAAVSO International Database using the name NOVA OPH 2015. Once a GCVS name hasbeen assigned, please use that name.
Notes: a. Announced in IAU Central Bureau for AstronomicalTelegrams Central Bureau Electronic Telegram 4086 (Daniel W. E. Green, ed.).
b. Sakurai reports nothing was visible at this locationon two frames taken on March 28.766 UT. S. Kiyota (Kamagaya, Japan) confirmedthe object's presence on an image obtained 2015 March 30.540 remotely with 0.61-m f/6.5 CDK astrograph + FLIPL09000 CCD camera at Sierra Remote Observatory site of iTelescope.NET(Auberry, CA, USA).
c. P. Schmeer (Bischmisheim, Germany) notes a starmagnitude ~18 in the USNO-B1.0 catalogue at position end figures 13.58s,13.7".
d. Position end figures - S. Kiyota (Kamagaya, Japan), 13.42s, 13.85" - T. Noguchi (Chiba-ken, Japan), 13.42s, 13.9" - S. Nakano (Sumoto, Japan), measurement of Sakurai'simage, 13.43s, 14.0" (CBET 4086) - G. Masi (remotely using a 43-cm telescope at Ceccano,Italy), 13.41s, 13.6" (CBET 4086) e. Images:
Congratulations to Yukio Sakurai on his latest discovery!
This AAVSO Alert Notice was compiled by Elizabeth O.Waagen.
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發表於 2015-4-3 12:49:11