AAVSO Alert Notice

Alert Notice 253: Special and unique optical monitoring request - 1522+45 GRB 990123 - gamma-ray burster event with bright optical counterpart

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 253 (January 28, 1999)

SPECIAL and UNIQUE OPTICAL MONITORING REQUEST:  1522+45  GRB 990123 -
GAMMA-RAY BURSTER EVENT WITH BRIGHT OPTICAL COUNTERPART

Alert Notice 276: 1903-57 Supernova 2000cj in NGC 6753 in Pavo AND 1846-01D Probable nova in Aquila = 1846-01 CI Aquilae

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 276 (May 18, 2000)

1903-57  SUPERNOVA 2000cj IN NGC 6753 IN PAVO

Alert Notce 275: 0755+67 Supernova 2000ce in UGC 4195 in Camelopardalis

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 275 (May 10, 2000)

0755+67  SUPERNOVA 2000ce IN UGC 4195 IN CAMELOPARDALIS

Alert Notice 273: 1828-14 Nova Scuti 2000 AND 2138+43 SS Cygni being observed with RXTE for three months

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 273 (March 20, 2000)

1828-14 NOVA SCUTI 2000

Alert Notice 272: 1301-27 Supernova 2000P in NGC 4965 in Hydra AND 1247-28 EX Hydrae - multiwavelength observing campaign scheduled

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 272 (March 13, 2000)

1301-27 SUPERNOVA 2000P IN NGC 4965 IN HYDRA