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Alert Notice 164: 1817-23 Nova Sagittarii 1992 No. 3 [V4171 Sgr]

October 15, 1992

THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
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AAVSO ALERT NOTICE 164 (October 15, 1992)

1817-23 NOVA SAGITTARII 1992 NO. 3

We have been informed by the Central Bureau for Astronomical Telegrams (IAU Circular 5634) and AAVSO member Danie Overbeek of the photographic discovery of a nova by Paul Camilleri, Cobram, Victoria, Australia, on October 13.40 UT at photovisual magnitude 9.0. Robert McNaught, Anglo-Australian Observatory, confirmed the presence of the nova and gives the following precise position (1950):

R.A. = 18h 20m 39.43s   Dec. = -23o 01' 05.5"

The object is very close to SAO 186756 (R.A. 18h 20m 33s  Dec. -23o 04' 21").

Observations of N Sgr 92#3 include:
Sep 29.41 UT, <12  photovisual (P. Camilleri)
Oct 13.40, 9.0 photovisual (Camilleri)
14.41, 8.5 photovisual (Camilleri)
14.71, 8.3 visual (D. Overbeek, Edenvale, South Africa)

Please use the accompanying chart from the AAVSO Variable Star Atlas to observe the nova. The star marked 'a' on the chart is SAO 186715, magnitude 7.7 (R.A. 18h 219m 01s  Dec. -25o 56' 47"). Star 'b' is SAO 186756, magnitude 8.6. If you use either of these two stars, be sure to indicate so on your monthly report, as we will need this information if the magnitude of either star is revised.

Please report your observations to AAVSO Headquarters. The answering machine (617-354-0484) is on nights and weekends for your convenience.

Congratulations to Paul on his latest discovery!

 

Thank you very much for your astronomical contributions.

Director

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