Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 4589: X-RAY N IN Vul; N LMC; 1986h; NOTICE RE Tlgms

The following International Astronomical Union Circular may be linked-to from your own Web pages, but must not otherwise be redistributed (see these notes on the conditions under which circulars are made available on our WWW site).

Read IAUC 4588 SEARCH Read IAUC 4590
IAUC number 

                                                  Circular No. 4589
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TWX 710-320-6842 ASTROGRAM CAM    Telephone 617-495-7244/7440/7444
MARSDEN or GREEN@CFA.BITNET    MARSDEN or GREEN@CFAPS2.SPAN


X-RAY NOVA IN VULPECULA
     S. Okamura and T. Noguchi, Tokyo Astronomical Observatory, Kiso
Station, telex that they have found two possible candidates for this
object within the error box reported by the Ginga Team (IAUC 4588) by
examination of the Palomar Sky Survey charts and several plates taken
with the Kiso Schmidt telescope.  Candidate A (R.A. = 20h01m01s.53 +/-
0s.04, Decl. = +25D08'57".8 +/- 0".7, equinox 1950.0) is a red
variable object (B-R = +4 from the Palomar charts) with B = 18.5 on
the Palomar chart, [19.5 in 1983 and 17.5 on 1988 Apr. 28.  Candidate
B (R.A. = 20h00m42s.86 +/- 0s.04, Decl. +25d05'43".5 +/- 0".7, equinox
1950.0) is totally invisible on both Palomar charts and on Kiso plates
taken in 1978 and 1983, but it does appear at B = 17.5 on the 1988
Apr. 28 plate and also on a red plate taken on Apr. 30.


NOVA IN THE LARGE MAGELLANIC CLOUD
     P. M. Kilmartin, Mount John Observatory, communicates the
following photometric observations by A. C. Gilmore: Apr. 23.48 UT, V
= 13.51, U-B = -0.29, B-V = +0.02, V-R = +0.56; 25.43, 13.77, -0.38,
-0.12, +0.57.  U-B is poorly determined, and conditions were marginal
on Apr. 25.


PERIODIC COMET SCHWASSMANN-WACHMANN 2 (1986h)
     Total visual magnitudes: Mar. 12.29 UT, 13.9 (A.
Hale, Las Cruces, NM, 0.41-m reflector); 14.96, 12.8 (M. Amoretti,
Sanremo, Italy, 0.35-m reflector); 19.02, 12.7 (Amoretti); 20.28,
13.8 (Hale); 26.47, 13.7 (Hale); Apr. 9.40, 14.1 (D. Levy, Tucson,
AZ, Catalina 1.54-m reflector); 17.07, 13.7 (A. Boattini,
Piazzano, Italy, 0.40-m reflector); 19.29, 13.7 (Hale).


NOTICE CONCERNING TELEGRAMS
     Somewhat earlier than usual, we are again offering an
'open season' for making changes in the list of subscribers to the
Central Bureau's telegram service.  Subscribers who wish to make
address changes, category changes, etc., are requested to inform
us of said changes by June 30.  We regret that a charge of $50.00
must be made for address changes and deletions outside these open
seasons, which generally take place twice per year.


1988 May 4                     (4589)              Brian G. Marsden

Read IAUC 4588 SEARCH Read IAUC 4590

Our Web policy. Index to the CBAT/MPC/ICQ pages.

Valid HTML 4.01!