Skip to main content

Alert Notice 160: 1817-18 Nova Sagittarii 1992 No. 2 [V4169 Sgr] AND Supernova in NGC 4411B

THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
BITNET: aavso@cfa SPAN: cfa::aavso
INTERNET: aavso@cfa.harvard.edu
Tel. 617-354-0484 FAX 617-354-0665

AAVSO ALERT NOTICE 160 (July 10, 1992)

1817-18 NOVA SAGITTARII 1992 NO. 2  [V4169 Sgr]

We have been informed by William (Bill) Liller, Vina del Mar, Chile, and the Central Bureau for Astronomical Telegrams of the photographic discovery by Bill Liller of a nova in Sagittarius. The nova was discovered, using the PROBLICOM method, on TP film with orange filter and 85 mm lens on 1992 July 9.157 UT at magnitude 8.5, from the average of two photos. The object was <12.0 on July 6.03 UT.

The 1950 positon of the object is:

R.A. 18 20 18   Dec. -20 23.7

Nova Sgr 1992 No. 2 has been confirmed spectroscopically by astronomers at the European Southern observatory as a nova near maximum light.

The following observations are provided by our observers: July 10.19 UT, 7.8 (P. Sventek, Houston, TX); 10.20, 8.0 (M. Adams, Melbourne, FL); 10.23, 8.2 (C. Scovil, Stamford, CT).

Please observe the nova using the accompanying finder chart of the field from the AAVSO Variable Star Atlas and the AAVSO preliminary 'b' chart of nearby V1017 Sgr. The answering machine (617-354-0484) in on nights and weekends for your convenience.

1221+09 SUPERNOVA IN NGC 4411B

Bill Liller (Vina del Mar, Chile) informs us that a pre-discovery photograph of the supernova in NGC 4411B (see AAVSO Alert Notices 158 and 159), taken with TP film and minus-UV filter on 1992 June 29,98 UT, shows the supernova at magnitude 14. The comparison star sequences (V) used were those on charts for NGC 4374 and NGC 4438 (Supernova Search Charts and Handbook, G. D. Thompson and J. T. Bryan, Jr., Cambridge University Press).

Many thanks for your efforts and valuable observations. Good observing!

Janet A. Mattei
Director

files: N Sgr 1992 No. 2 charts: excerpt from AAVSO Variable Star Atlas and V1017 Sgr 'b' preliminary chart [both charts on one page]

------------------------------------------------

SUBMIT OBSERVATIONS TO THE AAVSO

Information on submitting observations to the AAVSO may be found at:
http://www.aavso.org/webobs

SPECIAL NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION

A Special Notice archive is available at the following URL:
http://www.aavso.org/special-notice-archive

Subscribing and Unsubscribing may be done at the following URL:
http://www.aavso.org/observation-notification#specialnotices

-------------------------------------------------

Please support the AAVSO and its mission -- Join or donate today:
http://www.aavso.org/apps/donate/

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