Skip to main content

Web Publications


AAVSO: Alert Notices AAVSO HOME > publications > alerts

Alert Notices

          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 264 (December 2, 1999)

1918+04 NOVA AQUILAE 1999 NUMBER 2

We have been informed by the Central Bureau for Astronomical Telegrams (IAU
Circular 7323 - http://cfa-www.harvard.edu/iau/cbat.html) that AAVSO observer
and visual nova searcher Alfredo Pereira, Cabo da Roca, Portugal, discovered
a bright nova in Aquila on Dec. 1.785 UT at about visual magnitude 6.0.  His
discovery was made during his visual search of the area using 14x100
binoculars.

Visual confirmation was made by C. Vitorino, Cabo da Roca, Portugal, who
observed the nova on Dec. 1.819 at magnitude 5.9 (IAU Circular 7323).
Additional confirming observations were made by D. Green, Cambridge, MA, on
Dec. 1.939 at magnitude 5.1 (IAU Circular 7323); and D. di Cicco, Sudbury, MA,
on Dec. 1.95 at CCD magnitude 5.2 (IAU Circular 7323).

A precise position of N Aql 99#2 was reported by D. di Cicco as:

     R.A. = 19h 23m 05.38s   Decl.= +04 degrees 57' 20.1" (Equinox 2000.0)

Observations reported to the AAVSO include: Dec. 1.813, 5.8, Pereira (IAU
Circular 7323); 1.842, 5.8, Vitorino (IAU Circular 7323); 1.843, 5.8, Pereira
(IAU Circular 7323); 1.954, 5.5, M. Mattei, Littleton, MA; 1.958, 5.6, G.
Nowak, Essex Junction, VT; 1.9778, 5.2, G. Menali, Dorchester, MA; 1.9792,
5.1, H. Menali, Dorchester, MA; 1.983, 5.4, Mattei; 2.1146, 4.9 CCDV, R. Royer,
Lakewood, CA; 2.208, 4.9, H. Dahle, Honolulu, HI.

Accompanying is an AAVSO "aa" scale preliminary chart prepared by C. Scovil.
Please use this chart to observe 1918+04 N Aql 99#2 and report your
observations to AAVSO Headquarters so we may inform the astronomical community.
Please be sure to indicate which comparison stars you used to make your
estimates.

Congratulations to Alfredo on his discovery!

CHARTS AVAILABLE ON AAVSO WEB AND FTP SITES

Electronic copies of the N Aql 99#2 chart 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 (198.116.78.5), in /alerts/alert264)

The answering machine at AAVSO Headquarters is on nights and weekends for
your convenience. Please call our charge-free number (888-802-STAR =
888-802-7827) to report your observations. We also encourage observers to
send observations by fax to 617-354-0665 or by e-mail through the Internet
to observations@aavso.org.

Many thanks for your valuable astronomical contributions and your efforts.

Good observing!

Janet A. Mattei
Director

Elizabeth O. Waagen
Senior Technical Assistant


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