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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:

Alert Notice 306: Possible new variable in Hercules - 1835+25 Var Her 04 AND Update on request for monitoring of 0409-71 VW Hyi

THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
INTERNET: aavso@aavso.org
Tel. 617-354-0484 Fax 617-354-0665

AAVSO ALERT NOTICE 306 (June 22, 2004)

SUBJECT:

  1. Possible New Variable in Hercules: 1835+25 VAR HER 04
  2. Update on Request for Monitroing of 0409-71 VW HYDRI

1. POSSIBLE NEW VARIABLE IN HERCULES

Object: 1835+25 VAR HER 04

Possible New Variable in Hercules: Var Her 04

A possible new variable has been discovered in Hercules. The nature of this object is not yet known although it now appears to be a catacylsmic variable. It does not appear to be a classical nova, and is quite blue. At this time it appears to be a UGWZ type dwarf novae. UGWZ stars have very infrequent outbursts decades apart.

Last updated: Tue Nov 9 11:35:59 EST 2004

Alert Notice 329: 1815+50 DV Draconis - Rare outburst

November 22, 2005

SUBJECT: 1815+50 DV Draconis - Rare outburst

Object: 1815+50 DV DRA

Coordinates: R.A. 18h 17m 23.07s Decl. +50o 48' 17.7" (J2000.0)

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