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Alert Notice 291

             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 291 (October 3, 2001)


1348-63  NOVA CENTAURI 2001 - POSSIBLE NOVA IN CENTAURUS

We have been informed by the Central Bureau for Astronomical Telegrams (IAU
Circular 7726) that William Liller, Viņa del Mar, Chile, photographically
discovered a possible nova in Centaurus at magnitude 8.6 on images taken
October 1.010 and 1.011 UT, using Tech Pan film and an orange filter at the
position:

              R.A. = 13h 55m.5     Decl. = -64o 16'      (2000)

Nothing is seen at the location of the nova down to magnitude 11.0 on films
taken by Liller on Sep. 19.00.

Photoelectric photometry of the new object obtained by A.C. Gilmore, Mount
John Observatory, University of Canterbury, using the 0.6-m f/16 reflector
under unfavorable conditions (thin clouds and bright moonlight) yields the
following data for October 2.415: V = 9.11, U-B = +0.83, B-V = +1.41, V-R =
+0.81, V-I = +1.69, with an airmass of 2.18. Gilmore also reported the
following astrometry: R.A. = 13 h 55 m 41 s.9, Decl. = -64o 15' 48" (equinox
2000), with an uncertainty of <10" in each coordinate.

Additional observations submitted to the AAVSO include: Oct. 2.33 UT, 9.2, A.
Jones, Nelson, New Zealand (via IAU Circular 7726); 2.542, 9.3, A. Pearce,
Nedlands, W. Australia; 2.708, 9.5, L.A.G. Monard, Pretoria, South Africa;
2.9931, 9.4, A. Amorin, Florianapolis, Brazil; 3.510, 9.6, A. Pearce,
Nedlands, W. Australia.

Accompanying is an AAVSO 'd' scale preliminary chart of N Cen 01 prepared by
C. Scovil.  Please use this chart to observe this nova, and report your
observations of 1348-63 N Cen 01 to AAVSO Headquarters, making sure to
indicate which comparison stars you used.

Congratulations to Bill on his latest discovery!

CHARTS AVAILABLE ON AAVSO WEB AND FTP SITES

Electronic copies of the chart for N Cen 01 mentioned in this Alert Notice are
available through our web site at the following address:

                             http://www.aavso.org

The chart may also be obtained directly from our FTP site:

             ftp.aavso.org (209.192.236.2), in /alerts/alert291)

We encourage observers to submit observations via our website (online data
submission tool WebObs), or by email in AAVSO format to
observations@aavso.org.  If you do not have AAVSO Observer Initials, please
contact Headquarters so we may assign them to you.  The answering machine at
AAVSO Headquarters is on nights and weekends; use our charge-free number
(888-802-STAR = 888-802-7827) to report your observations, or report them via
fax (617-354-0665).

Many thanks for your valuable astronomical contributions and your efforts.

Good observing!

Janet A. Mattei
Director

Kerriann H. Malatesta
Technical Assistant

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