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IAUC 3127: 1977p; 1977m; SMC X-2 AND SMC X-3; N Sgr 1977

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IAUC number 

                                                  Circular No. 3127
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Cable Address: SATELLITES, NEWYORK     Telex: 921428
Telephone: (617) 864-5758


COMET SANGUIN (1977p)
     R. M. West, European Southern Observatory, provides the following
precise positions, measured from plates taken by H.-E. Schuster:

     1977 UT             R. A. (1950) Decl.
     Oct. 20.24347    22 34 18.37   - 8 20 49.0
          21.00908    22 35 15.40   - 8 29 36.1


COMET KOHLER (1977m)
     D. Despois, E. Gerard, B. Darchy and J. Pezzani report that
observations with a dual linear-polarization 50-K receiver at Nancay
Radio Observatory since Oct. 21 show the OH line at 1667 MHz in
absorption; the brightness temperature is about -0.13 K and the line
width 3 km/s.  The OH gas production is comparable to that of comet
Kohoutek (1973 XII).  The brightness temperature is increasing
owing to the approaching background galactic ridge and should reach
~ -4 K during Nov. 2-5.


SMC X-2 AND SMC X-3
     P. Pesch, Warner and Swasey Observatory, communicates: "On a
deep, nitrogen-baked, objective-prism plate taken with the Curtis
Schmidt telescope at Cerro Tololo Interamerican Observatory, N.
Sanduleak and A. G. D. Philip note the presence of a fourteenth-magnitude
OB star within ~ 0'.5 of the position given for SMC X-2
(IAUC 3125).  The star can be identified in Fig. 1 of Sanduleak
1968, Astron. J. 73, 246), where it lies 23.9 mm almost due east
of star No. 30 and 32.8 mm from star No. 60.  About 20" due west of
the OB star there is a pair of slightly fainter stars lying along a
northeast-southwest axis.

     Corrigendum.  On IAUC 3125, the value of R.A. for SMC X-3 should
read 0h50m21s.2, not 0h52m21s.2


NOVA SAGITTARII 1977
     Further visual magnitude estimates: Aug. 16.10 UT, 11.4 (5.
O'Meara, Harvard Observatory); 26.11, 11.4 (O'Meara); Sept. 7.13,
11.7 (J. Bortle, Brooks Observatory); 20.5, 11.3 (V. L. Matchett,
Indooroopilly, Queensland); Oct. 22.1, 11.8 (Bortle).


1977 October 31                (3127)              Brian G. Marsden

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