COMMISSION 27 OF THE I. A. U.
         INFORMATION BULLETIN ON VARIABLE STARS
                      NUMBER 692

                                       Konkoly Observatory
                                       Budapest
                                       1972 June 30


                ERUPTIVE OBJECT IN URSA MAIOR


The object quoted by KUKARKIN et al. (IAU Circ. 2408) is very probably a star
of U Geminorum type with long cycle. On patrol plates taken since 1953 the
star was observed to undergo bright maxima at the following dates:

   J.D.   m_pg

2434652   10.7
   5370   11.4
   7783   11.1
   8168   11.2
   8765   10.9
   9913   11.7
2441054   11.4
   1451   11.1

Occasionally the object was brighter than 12m for as many as 6 days.

For further details see next number of MVS.


1972 June 23

H. HUTH
Deutsche Akademie der Wissenschaften
Zentralinstitut fur Astrophysik
Sternwarte Sonneberg


Correction: Dr. Sarma writes that in IBVS 675 two minima of R CMa were
incorrectly given. The corrected Table is as follows:

Minimum (Primary)         O-C
J.D. 2440971.282       +0.004d
          79.234        0.004
          95.139        0.006
          96.271        0.002


Editors