(cba:news) Fwd: [vsnet-alert 16417] New CV in Cassiopeia MASTER OT J004527.52+503213.8 (12.5m)!

Joe Patterson jop at astro.columbia.edu
Wed Sep 18 15:16:34 EDT 2013

Dear CBAers,

This looks like one of ours, and it's bright enough to be studied all 
the way down to quiescence.  So let's fire away with gusto!

And I think it's finally time to say goodbye to V1101 Aql.  The coverage 
has been magnificant, and so has the star.  But let's make way for the 
new.  The only proviso is that we should *briefly* look in on it about 
1-2 months hence, to establish a maximally accurate value for the two 

More later om other stars...


-------- Original
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Bright SU UMa / WZ Sge candidate discovered by MASTER-Amur, see ATel
#5399 <http://www.astronomerstelegram.org/?read=5399>

MASTER OT J004527.52+503213.8
   20130917.668  12.53C  MASTER-Amur
   20130917.670  12.50C  MASTER-Amur
   20130917.688  12.59C  MASTER-Amur
   20130917.690  12.65C  MASTER-Amur

Outburst amplitude is 7m, if we believe in USNO-B1.0 magnitudes, and
6m (if USNO-A2.0 values are true):
USNO-B1.0 1405-0020846 00 45 27.508 +50 32 15.56  pmRA=0  pmDE=0
B1=18.64 R1=19.27 B2=19.69 R2=19.95 I=19.30
USNO-A2.0 1350-00774528 00 45 27.52 +50 32 15.5  R=18.4  B=18.1

Color-combined DSS finder chart (10'x10' FOV):
MASTER-Amur discovery and reference images:

This is the brightest northern CV discovered by MASTER-II robotic
telescopes (the one at 12.1m in Lupus was found with MASTER-WFC in
Argentina). Time-resolved photometry is strongly encouraged!

Denis Denisenko
Member of MASTER team at SAI MSU

P.S. We were actually searching for the parent body of September
Perseids which should be hiding in the Northern Milky Way now. ;-) No
comet yet, but still a nice catch!

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