Central Bureau for Astronomical Telegrams
IAUC 3434: 1979k; 1979 YA; NO Occn BY NEPTUNE ON 1980 Feb. 10
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Read IAUC 3435
Circular No. 3434
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 SCHWASSMANN-WACHMANN 2 (1979k)
This comet has been recovered by G. Schwartz on exposures with
the 1.5-m reflector at Harvard College Observatory's Agassiz Station
as follows:
1979 UT R. A. (1950) Decl. m2
Dec. 14.98141 23 39 07.87 - 6 03 01.2 20.5
15.99677 23 39 34.00 - 5 59 25.7
The object is of stellar appearance and close to the prediction in
the B.A.A. Handbook for 1980, which leads to the ephemeris:
1979/80 ET R. A. (1950) Decl. Delta r m2
Dec. 13 23 38.35 - 6 09.5 3.342 3.527 20.1
23 23 42.98 - 5 32.3
Jan. 2 23 49.06 - 4 46.1 3.572 3.456 20.2
12 23 56.42 - 3 52.1
22 0 04.91 - 2 51.4 3.778 3.384 20.2
Feb. 1 0 14.39 - 1 44.9
11 0 24.73 - 0 33.7 3.940 3.310 20.2
21 0 35.84 + 0 41.3
Mar. 2 0 47.61 + 1 59.3 4.048 3.235 20.1
1979 YA
A telex from the European Southern Observatory reports that
Debehogne and Rangel have discovered an asteroidal object moving
direct near opposition as follows:
1979 UT R. A. (1950) Decl. Mag.
Dec. 16.30103 6 04.5 +14 45 16.7
Daily motion: dR.A. = +0m.38, dDecl. = 0'.
NO OCCULTATION BY NEPTUNE ON 1980 FEBRUARY 10
J. L. Elliot, Massachusetts Institute of Technology, writes
that calculations by D. Mink and himself (based on new measurements
by A. R. Klemola) indicate that there will be no occultation of
star No. 17 in the list by Kiemola et al. (1978, A.J. 83, 205).
The geocentric separation at conjunction will be 1".48 +/- 0".10.
1979 December 21 (3434) Brian G. Marsden
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