[vsnet-campaign-dn 5614] SDSS J162718.39+120435.0: SU UMa-type dwarf nova in the period gap

[Taichi Kato]

   According to Tom Krajci (via cvnet), SDSS J162718.39+120435.0
is an SU UMa-type dwarf nova with a long superhump period
(in the period gap!).

   Such an object is very rare, with only a few examples.
The best known object NY Ser may be analogous, particularly
in terms of a low outburst amplitude.   Further monitoring for
normal outbursts would be desired since NY Ser is known to show
frequent normal outbursts.  Normal outbursts in MN Dra are less
frequent.

NY Ser (Psh = 0.106 d):
http://adsabs.harvard.edu/abs/1998PASJ...50L...1N

MN Dra (Psh = 0.105-0.106 d):
http://adsabs.harvard.edu/abs/2003A%26A...404.1067N

===

From: Tom Krajci <tom_krajci at tularosa.net>
Date: Sun, 01 Jun 2008 07:18:12 -0600
Subject: [cvnet-outburst] SDSS J162718.39+120435.0 superhumps detected!

Time-series photometry last night shows this star is superhumping.  
Amplitude is 0.2 magnitudes, and a crude period analysis gives 0.109 
days, or 2.61 hours.

Tom Krajci
Cloudcroft, New Mexico