Skip to main content

Web Publications

AAVSO Special Notice #92: Optical Transient in Canis Minoris AAVSO HOME > publications > special notice

AAVSO Special Notice #92

Optical Transient in Canis Minoris
January 20, 2008

H. Naito and S. Narusawa (Nishi-Harima Astronomical Obs., Japan) 
announced (vsnet-alert #9382) spectroscopic observations of a new 
optical transient, recently announced on the CBAT Unconfirmed 
Observations Page, that suggest the object is a dwarf nova.  A 
check of the DSSII Blue, IR, and Red plates yields a very faint, 
blue object at the stated coordinates of the OT, and the object 
is present in the USNO-B1, NOMAD, and GSC 2.3.2 catalogs with 
B ~19.5, but not in any other catalog.  Because the object is 
currently at V ~ 12.3, this indicates a large amplitude, and 
suggests that this may be a new WZ Sge-type dwarf nova.  
Time-series observations are encouraged.

The optical transient is located in Canis Minoris at coordinates

RA: 07 47 27.64 , Dec: +06 50 50.0 (J2000)

and was originally announced by CBAT as an unconfirmed source:

A comparison star sequence is not yet available, but charts may
be generated with VSP using the coordinates above:

This special notice was prepared by Matthew Templeton.


Information on submitting observations to the AAVSO may be found at:


A Special Notice archive is available at the following URL:

Subscribing and Unsubscribing may be done at the following URL:

AAVSO 49 Bay State Rd. Cambridge, MA 02138 617-354-0484