Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 5967: 1994e; GRO J0422+32; 1994I

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 5966  SEARCH Read IAUC 5968

View IAUC 5967 in .dvi or .ps format.
IAUC number


                                                  Circular No. 5967
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM     EASYLINK 62794505
MARSDEN@CFA or GREEN@CFA (.SPAN, .BITNET or .HARVARD.EDU)


PERIODIC COMET RUSSELL 2 (1994e)
     J. V. Scotti, Lunar and Planetary Laboratory, reports his
recovery of this comet with the Spacewatch reflector at Kitt Peak.
The following positions are in close agreement with the prediction
on MPC 18259 (ephemeris on MPC 23142):

     1994 UT             R.A. (2000) Decl.        m1
     Apr.  5.47858   16 16 33.67   -23 25 05.1   21.1
           5.48701   16 16 33.69   -23 25 07.4   21.3
           5.49579   16 16 33.70   -23 25 11.3   21.3
           6.48003   16 16 37.55   -23 30 16.2   21.2
           6.48800   16 16 37.61   -23 30 18.4   21.5
           6.49628   16 16 37.54   -23 30 21.3   22.0


GRO J0422+32
     E. Martin and M. Serra-Ricart, Instituto de Astrofisica de
Canarias (IAC), La Laguna, communicate:  "After successive outbursts
of decreasing intensity (cf. IAUC 5921) the x-ray transient GRO
J0422+32 has been observed to be in a quiescent state since Feb. 1
via the IAC 0.80-m telescope of Teide Observatory.  Photometric CCD
monitoring on Mar. 14 and 15 reveals modulation of amplitude 0.3 +/-
0.1 mag in the I band and a shape suggesting ellipsoidal variations
of period 2.5 hr.  These data are consistent with a secondary's
orbital period of 5.1 hr, the shortest known among x-ray transients.
Further CCD observations taken with the 2.5-m Nordic Optical
Telescope at La Palma give the following photometry: Mar. 26.90 UT,
I = 18.87 +/- 0.04, (R-I)c = +0.96 +/- 0.08, (V-I)c = +1.8 +/- 0.1.
These colors suggest that the secondary is a K-type star."


SUPERNOVA 1994I IN NGC 5194
     Further magnitude estimates:  Mar. 31.58 UT, 14 (S. Sasaki,
Hazaki, Japan; T-Max 400 film; independent discovery); 31.95, 14-15
(M. Moeller and C. Pawellek, Timmendorfer Strand, Germany;
prediscovery trailed image with unfiltered CCD); Apr. 1.997, 13.3 (J.
Bustamante-Donas, Madrid, Spain; prediscovery unfiltered CCD image);
2.57, 14 (A. Yonezawa, Outou-mura, Japan; Fuji G800 film;
independent discovery); 7.16, 13.3 (W. G. Dillon, Missouri City,
TX; visual).
     Corrigendum.  On IAUC 5966, line 12, for  P. Berland  read
P. Berlind


1994 April 7                   (5967)            Daniel W. E. Green

Read IAUC 5966  SEARCH Read IAUC 5968

View IAUC 5967 in .dvi or .ps format.


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


Valid HTML 4.01!