Affiliation
Association Francaise des Observateurs d'Etoiles Variables (AFOEV)
Thu, 07/16/2020 - 22:08
Possible nova at 17 58 08.48 -30 05 37.6 (J2000.0), for details see
http://www.cbat.eps.harvard.edu/unconf/followups/J17580848-3005376.html
Complete ASAS-SN Sky Patrol (Shappee et al. 2014ApJ...788...48S and Kochanek et al. 2017PASP..129j4502K) light curve and data (the brightening on 2019 April 2.262 UT is very likely not real):
https://asas-sn.osu.edu/light_curves/4c0bd99e-3edd-4bdb-996f-be39ec5755…
The (likely) eruption began between 2020 July 10 and 15.
Spectroscopy, multiband photometry, and precise astrometry are urgently required.
Clear skies,
Patrick
Is there a name in the AAVSO database to report?
I observed a star in the position 17 58 08.48 -30 05 37.6 (J2000.0), with visual magnitude 10.6 in july 17 TU 03:25.
Hi Antonio,
I added it to VSX.
Two (possible) novae in a row, who would have thought?
Cheers,
Sebastian
Hi Antonio,
You can use either PNV J17580848-3005376 or N Sgr 2020 No. 3 for the name. There is no GCVS identification yet.
Thanks for your excellent obsevation and for submitting it to the AAVSO International Database so it can be used in studies of this nova!
Good observing,
Elizabeth
Thanks Sebastian. Uma atrás da outra! Bom demais!
saludos!
Author: Luiz. A. R. Araújo (ALRB)
SALT spectroscopic classification of PNV J17580848-3005376 as a very fast classical nova (ATel #13872):
http://www.astronomerstelegram.org/?read=13872
Astrometry of PNV J17580848-3005376:
17:58:08.46 -30:05:35.8
Astrometry made by Robert Fidrich (Budapest, Hungary) using CCD images made by Robert J. Modic (Willoughby, OH, US) made with a 0.25-m f/3.4 Reflector + SBIG ST-10XME CCD (T5, iTelesciope.NET) at Mayhill, USA.
HI Robert,
What is the date/time of Bob Modic's CCD images? It's important to include that information for reference.
thanks,
Elizabeth
2020 07 17.3011 UT for the V-band image.
AAVSO Alert Notice 712 reports on the discovery of PNV J17580848-3005376 = N Sgr 2020 No. 3. Please see the notice for details and observing instructions.
This object has threads in the following forums: Time Sensitive Reports and Novae. To stay informed about it, subscribe to these threads (option 1 below under Subscribe in each thread) - see comments and questions from observers, information about any campaigns on it, and notes from AAVSO HQ. Add a post yourself - join in the discussion!
Many thanks, and Good observing,
Elizabeth O. Waagen, AAVSO HQ
Hello all!
My observation (from Yuzhno-Morskoy, Nakhodka, Russia): July 17.5837, 2020. Mag. = 10.8 TG using Canon EOS 60D camera with 135-mm F/5.6 lens (stacked 10x10 sec., ISO-6400).
Best regards,
Filipp Romanov.
Credit: L.A.R. Araújo (ALRB)
Here is my spectra of the nova. Taken with 2 different spectrographs with different resolutions. R=1800 and R=4000
Terry
Finder chart E or fainter for Nova Sgr 2020 n 3
Hi!
I am trying to get a finder chart type E with fainter comparision stars for Nova Sgr 2020 n 3 but all appears are 11a. magnitude stars... Do exist a better chart?
thanks
Credit: L.A.R Araujo (ARLB)
Matching with the prior images, I noted it is more reddish now.
Original photo processed with photoshop only in brightness and contrast.