COMMISSION 27 OF THE I. A. U.
                    INFORMATION BULLETIN ON VARIABLE STARS
                                 Number 2494

                                                         Konkoly Observatory
                                                         Budapest
                                                         21 March 1984

                                                         HU ISSN 0374-0676

                   BD+37d443: A NON-VARIABLE STAR  


The variability of BD+37d443, announced by  Lolli  et  al. (1983) was  
investigated, using the 35cm telescope of the AAB observatory at Tizzano near
Bologna.
Eight Tri-X prof. plates were  exposed through  a GG 455  filter, for 15m
in the period since November 28, 1983 to January  5, 1984. No variations were
detected within the experimental errors. After a discussion with C. Bartolini
we arrived at the conclusion  that the first 4 differences of  magnitudes, 
obtained in 1977, published by Lolli et al. (1983) refer not to BD+37d443 but
to a red star located 1.5' to East of BD+37d442 (see  the map published  by
Rebeirot, 1982).





                       ANDREA CIMATTI
                       MARCO LOLLI
                       GIAMPIERO MENGOLI
                  Associazione Astrofili Bolognesi




References:
Lolli, M., Oculi, L., Piccioni, A., Serra, R.: 1983, I.B.V.S. No. 2325
Rebeirot, E.: 1982, Astrophys. Space Science, 88, 253 [BIBCODE 1982Ap&SS..88..253R ]