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THE ASTRONOMER Electronic Circular No 3094      2015 Jly 25 14.39UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise,  Basingstoke,
Hants, RG22 4PP,England.Telephone/FAX(01256)471074Int:+441256471074
INTERNET: GUY@TAHQ.DEMON.CO.UK      Backup: gmh@wdcc1.bnsc.rl.ac.uk
WORLD WIDE WEB                         http://www.theastronomer.org
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ASASSN-15MU: CATACLYSMIC VARIABLE STAR
Further to TA E-Circular 3093, a second eruptive star discovery was also
announced on The Astronomer's Telegram 7809 and designated ASASSN-15MU.
It was discovered at V=13.6 in "Brutus" images taken on 2015 July 18.48, but
not present (V>17.3) in images taken on 2015 July 14.45. At the position of
the transient, Vizier reports a match to a g=18.4 SDSS source, with a fairly
red SDSS colour of u-g=0.87.

Object        RA (J2000)  DEC (J2000)     Disc. UT Date   V mag
ASASSN-15mu   22:52:33.11 +10:20:25.0     2015 Jly 18.48   13.6 

Brian Skiff adds in VSNET:
For ASASSN-15mu the near-IR 2MASS observations give J = 14.55, K = 14.15
(thus intermediate J-K colour = 0.4), whereas the deeper UKIDSS data show J
= 15.85, K = 14.99, thus J-K = 0.86, typical of an M-dwarf.  Apparently the
2MASS data were also taken with the system in an elevated state above
quiescence.

Guy M Hurst