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IAUC 4394: 1987A; GX 339-4; 1987j

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IAUC number 

                                                  Circular No. 4394
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


SUPERNOVA 1987A IN THE LARGE MAGELLANIC CLOUD
     Corrigendum: on IAUC 4391, line 6, for  detected at p.a.  read
detected at angular distance 0".061 +/- 0".008 from the SN, and at p.a.
     Further visual magnitude estimates:  May 8.35 UT, 2.7 (D. A.
J. Seargent, The Entrance, N.S.W.); 11.40, 2.8 (G. W. Wolf,
Wellington, New Zealand); 12.46, 2.8 (Wolf); 14.62, 2.9 (Seargent).


GX 339-4
     S. A. Ilovaisky and C. Chevalier, Observatoire de Haute-
Provence, telex:  "The recent very faint optical state of GX 339-4
(IAUC 4383) is the second to be reported (cf. IAUC 3586).  A 90-min
blue plate (1".7 FWHM profiles for single stars) taken with the
European Southern Observatory 1-m Schmidt telescope on 1981 Mar. 8
shows the combined image of GX 339-4 and its close, unresolved
neighbor at B = 20.34 +/- 0.15, slightly brighter than the sum of the
two objects reported on IAUC 4383.  A finding chart appears in ESO
Messenger No. 26, p. 29 (1981).  Other CCD observations made with
the 1.54-m Danish telescope at La Silla have shown the unresolved
pair at moderately faint levels twice during the last few years:
in 1982 May (B = 19.6), where the state did not last longer than a
month, and in 1985 Mar.-Apr. (B = 18.8), at the time of the EXOSAT
low-state x-ray observation reported by Ilovaisky et al. (1986,
A.Ap. 164, 67), when it lasted at least one month."


COMET TORRES (1987j)
     Improved parabolic orbital elements from MPC 11831:

         T = 1987 Apr. 9.5765 ET     Peri. = 328.9537
                                     Node  = 193.7934   1950.0
         q =   3.624219 AU           i     = 124.0820

     1987 ET     R. A. (1950) Decl.     Delta      r       m1
     May  25    12 12.57    -26 01.9    2.943    3.647    16.0
     June  4    12 06.16    -22 00.5
          14    12 02.49    -18 29.4    3.267    3.672    16.2
          24    12 01.07    -15 29.5
     July  4    12 01.49    -12 59.1    3.658    3.705    16.5
          14    12 03.39    -10 54.8
          24    12 06.46    - 9 12.8    4.055    3.747    16.8


1987 May 15                    (4394)            Daniel W. E. Green

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