Central Bureau for Astronomical Telegrams
IAUC 3700: 1982f; OH 205.1-14.1; P/GUNN; 1982a
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Read IAUC 3701
Circular No. 3700
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 617-864-5758
PERIODIC COMET CHURYUMOV-GERASIMENKO (1982f)
J. Gibson, Jet Propulsion Laboratory, reports his recovery of
this comet on exposures with the 1.2-m Schmidt telescope at Palomar
as follows:
1982 UT R. A. (1950) Decl. m1
May 31.45492 23 52 44.17 - 8 18 37.3 18.5-19
June 1.45492 23 54 29.91 - 8 08 54.6
The object is essentially stellar in appearance. The predictions
by S. W. Milbourn (BAA Handb. for 1982, p. 75; MPC 6535) and S.
Nakano (Nakano Note No. 323) require correction by Delta-T = +0.03 day.
OH 205.1-14.1
I. Kazes, F. Biraud and J.-P. Drouhin. Meudon Observatory, report
that since the 1980 flare of the unusual OH maser OH 205.1-14.1
described by Kazes et al. on IAUC 3502 the left circular polarization
of the 1667-MHz radiation has undergone a dramatic change. In
1981 an increase in intensity up to 40 Jy was observed with the
Nancay radio telescope. In 1982 Apr. the polarized component at
l.s.r. velocity 13.9 km/s decreased to intensity 4 Jy. A second
maser, which had probably evolved over an interval of a few months,
appeared at velocity 13.6 km/s with intensity 5 Jy. In the Interval
13.0-14.5 km/s any right circularly polarized component is
smaller than 0.2 Jy. With a resolution of 0.009 km/s of the
autocorrelator, the width of the masers has been measured to be 0.12
0.02 km/s.
PERIODIC COMET GUNN
A. Hale, Costa Mesa, CA, communicates the following total magnitude
estimates, made visually with a 0.20-m reflector: May 22.28
UT, 13.3-13.5; 23.32, 13.3-13.5. Ephemeris on MPC 6211.
PERIODIC COMET GRIGG-SKJELLERUP (1982a)
Further total visual magnitude estimates: May 14.19 UT, 11
(Hale); 22.09, 9.9 (J. Bortle, Stormville, NY, 0.32-m reflector);
22.19, 10.0-10.5 (Hale); 26.09, 9.6 (Bortle); 26.11, 9.8 (C. S.
Morris, Harvard, MA, 0.15-m reflector); 27.08, 9.8 (Morris).
1982 June 3 (3700) Brian G. Marsden
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