long period variables

Alert Notice 150: Rare outburst of 2137+48 V1251 Cygni AND Large amplitude HIPPARCOS stars in need of more observations AND Updates on the activities of stars reported in Alert Notice 149

THE AMERICAN ASSOCATION OF VARIABLE OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
BITNET: aavso@cfa8 SPAN: nssdca::cfa8::aavso
Tel. 617-354-0484 FAX 617-354-0665

AAVSO ALERT NOTICE 150 (October 31, 1991)

RARE OUTBURST OF 2137+48 V1251 CYGNI

We have been informed by G. Hurst (UK) and P. Schmeer (Germany) that the cataclysmic
variable 2137+48 V1251 Cygni is in outburst, as indicated by the following observations:

AAVSO Times of Maxima and Minima of Long Period Variables: Current data

These data consist of formally published data for the years 1900 to 2008, and data for the years 2009 through the present for a subset of these stars.  Data from 2009 to the present were those used for calculations of the AAVSO Bulletin through 2018, and are considered preliminary.  For a description of this data set, please click here.