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IAUC 4607: ASM 2000+25; N Vul 1987; N Oph 1988; 1987d1; 1986l

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IAUC number 

                                                  Circular No. 4607
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


ASM 2000+25
     R. M. Hjellming, National Radio Astronomy Observatory; T. A.
Calovini, NRAO and New Mexico Tech; and F. A. Cordova, Los Alamos
National Laboratory, report: "We have detected a radio counterpart to
the soft x-ray nova (IAUC 4587) discovered by the Ginga Team.  The VLA
was used to search for the type of radio counterpart previously found
to be associated with the x-ray novae A0620-00 = V616 Mon and Cen X-4
= V822 Cen.  Radio images at 1.49 GHz, made from data taken on May 3
and 26, show that a radio source with a strength of 4.4 +/- 0.5 mJy
appeared in the May 26 image where there was none in the May 3 image
(with an upper limit of 0.5 mJy).  The position of this radio source
is R.A. = 20h00m42s.8 +/- 0s.3, Decl. = +25D05'40" +/- 5" (equinox
1950.0).  Within the joint uncertainties this position is coincident
with the x-ray position reported by Makino et al. (IAUC 4588) and the
position of the optical candidate B of Okamura and Noguchi (IAUC 4589)."


NOVA VULPECULAE 1987
     Visual magnitude estimates: May 7.02 UT, 14.2 (P. Schmeer,
Bischmisheim, West Germany); 12.04, 14.1 (Schmeer); 14.00, 14.3 (S.
Korth, Monheim, West Germany); 21.06, 14.1 (M. Verdenet, Bourbon-
Lancy, France); 23.01, 14.1 (Korth).


NOVA OPHIUCHI 1988
     Visual magnitude estimates: May 28.08 UT, 11.7 (A. Pereira,
Linda-a-Velha, Portugal); 29.83, 11.0 (R. H. McNaught, Coonabarabran,
N.S.W.); June 2.37, 10.6 (McNaught); 5.52, 10.3 (McNaught).


COMET ICHIMURA (1987d1)
     E. A. Jacobson, Evansville, MN, communicates the following
negative observations of this comet (0.25-m reflector): Feb. 11.51 UT,
[8.0; 17.51, [8.5; Mar. 14.46, [10.5 if stellar, [8.0 if diffuse;
May 24.30, [13.


COMET WILSON (1986l)
     Total visual magnitude estimate by D. Levy, Mt. Lemmon, AZ (1.5-m
reflector): May 7.19 UT, 13.9 (primary component).


1988 June 7                    (4607)              Brian G. Marsden

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