"MASTER: very bright OT in Large Magellanic Cloud direction
MASTER OT J051032.58-692130.4 discovery - 12m OT in LMC"
ATel #9039: http://www.astronomerstelegram.org/?read=9039
The discovery and reference images are available at
http://master.sai.msu.ru/static/OT/051032.58-692130.4.png
R.A. 05h10m32.58s Decl. -69°21'30.4" (J2000.0)
A possible progenitor (21 mag) is listed in "The Initial Gaia Source List (IGSL)" (Smart, 2013) and the "Magellanic Clouds Photometric Survey: the LMC" (Zaritsky+, 2004):
- IGSL3 (05 10 32.580 -69 21 30.60): BJ= 21.288, RF= 20.810, G= 20.931 mag
- MCPS (05 10 32.56 -69 21 30.9): B= 21.490, V= 20.828, I= 20.547 mag
This possible nova is located 2' from SAO 249214 (V= 8.7 mag) and 9' from Nova LMC 2005.
Spectroscopy is urgently required.
Clear skies,
Patrick
"OGLE-IV Pre-discovery Observations of MASTER OT J051032.58-692130.4"
Excerpt:
"... The star was severely saturated in the image acquired on 2016 April 28.97626 UT, meaning it was brighter than I=11 mag. The last pre-eruption image was taken eight nights earlier (on April 21.00403 UT).
The progenitor was clearly visible in the OGLE images ... and showed eclipsing-like variability with a period of 2.6508 +/- 0.0002 d. ..."
Full text (ATel #9040):
http://www.astronomerstelegram.org/?read=9040