Central Bureau for Astronomical Telegrams
IAUC 4104: 1982i; (197)
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Circular No. 4104
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
PERIODIC COMET HALLEY (1982i)
A. Tokunaga, D. Griep, W. Golisch and C. Kaminski, University
of Hawaii, report the following magnitudes obtained with the NASA
Infrared Telescope Facility on Aug. 25, using a 7"3 aperture (
error ~ 0.1 mag): J = 14.1, H = 13.6, K = 13.4, N = 6.1, Q = 2.7.
Observations indicate a color temperature of ~ 180 K.
P. J. McCarthy, M. Strauss and H. Spinrad report imaging and
spectroscopy with a CCD camera on the Lick Observatory's Shane 3-m
telescope on Aug. 23.49 UT (r = 2.83 AU). The comet's integrated
magnitude in the Lick red band pass was r = 13.04 +/- 0.01. There
was a well-developed coma extending some 1'5 from the nucleus.
The spectra reveal the presence of strong emission from CN, C2 and
C3. Emission from neutral oxygen at 630-nm is extremely weak and
possibly undetected. The C2 emission extends over at least 2'.
(197) ARETE
J. Schubart, Astronomisches Rechen-Institut, writes that
continuing accurate observations of this object are necessary for
determining the mass of (4) Vesta; he provides an extended ephemeris:
1985/86 ET R.A. (1950.0) Decl. p r Mag.
Oct. 2 6 43.07 +22 44.0 2.697 2.849 15.7
12 6 50.29 +22 55.1
22 6 55.38 +23 09.8 2.452 2.880 15.5
Nov. 1 6 58.09 +23 29.3
11 6 58.17 +23 54.5 2.229 2.910 15.2
21 6 55.45 +24 25.2
Dec. 1 6 50.01 +25 00.2 2.063 2.938 15.0
11 6 42.16 +25 37.0
21 6 32.57 +26 12.5 1.991 2.966 14.6
31 6 22.25 +26 43.5
Jan. 10 6 12.30 +27 08.1 2.036 2.992 14.8
20 6 03.79 +27 25.9
30 5 57.52 +27 38.1 2.195 3.016 15.2
Feb. 9 5 53.88 +27 46.2
19 5 53.01 +27 51.7 2.437 3.039 15.5
Mar. 1 5 54.81 +27 55.5
11 5 59.02 +27 58.0 2.726 3.061 15.8
21 6 05.37 +27 59.1
31 6 13.54 +27 58.2 3.029 3.081 16.1
1985 September 9 (4104) Brian G. Marsden
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