Central Bureau for Astronomical Telegrams
IAUC 2705: P/SCHWASSMANN-WACHMANN 1; 1974a; 1971 UA; 1974 MA
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Read IAUC 2706
Circular No. 2705
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
Western Union: RAPID SATELLITE CAMBMASS
PERIODIC COMET SCHWASSMANN-WACHMANN 1
Nihondaira Obs. Circ. No. 557 reports that, according to
observations by M. Koishikawa and others at Sendai, this comet had a
total magnitude of about 12 during Sept. 21-23. That the comet has
recently been active is confirmed by E. Roemer, Lunar and Planetary
Laboratory; and by R. E. McCrosky and C. Y. Shao, Harvard College
Observatory. The current ephemeris is on IAUC 2652.
PERIODIC COMET FORBES (1974a)
Dr. R. L. Waterfield, Woolston Observatory, communicates the
following precise position, measured by him from a plate taken by
G. H. Rutter. There was an extremely faint and diffuse, broad
fan-tail 6' long in p.a. 260o.
1974 UT R. A. (1950) Decl. m1
Aug. 17.05680 23 51 09.97 - 8 56 49.2 15.5
1971 UA
Dr. L. Kohoutek, Hamburg Observatory, Bergedorf, provides the
following precise positions. Measurer: M. Dieckvoss.
1973 UT R. A. (1950) Decl.
Aug. 27.93420 21 46 31.60 +27 50 52.2
27.98056 21 46 24.69 +27 49 26.9
1974 MA
The following improved elements, by the undersigned, satisfy
the six precise positions June 26 to July 23 within 2":
T = 1974 Sept. 10.3284 ET
Peri. = 126.8013 e = 0.759876
Node = 302.0948 1950.0 a = 1.757329 AU
Incl. = 37.6531 n = 0.4230820
q = 0.421977 AU P = 2.330 years
1974 October 4 (2705) Brian G. Marsden
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