Central Bureau for Astronomical Telegrams
IAUC 3063: 1977 HA; 1976h; 1976i; 1977a
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Circular No. 3063
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
1977 HA
E. Helin, California Institute of Technology, reports the
discovery by B. Bus and herself of another fast-moving asteroidal
object. The following precise positions are available:
1977 UT R. A. (1950) Decl. mv Observer
Apr. 17.34306 12 59 39.10 +35 21 47.6 15 Helin
17.35625 12 59 41.44 +35 21 40.9 "
18.41458 13 03 07.65 +35 13 49.4 "
19.20625 13 05 31.09 +35 07 34.0 "
21.17708 13 10 31.8 +34 50 27 15.5-16 Bowell
E. Helin, B. Bus, P. Bormann and T. Lauer (Palomar Mountain Observatory).
46-cm Schmidt telescope. Measurer: Bus.
E. Bowell (Lowell Observatory). B magnitude 17.0 +/- 0.1.
Computations by J. G. Williams, Jet Propulsion Laboratory, and
by B. G. Marsden indicate that this is another Apollo-type object.
The following orbit and ephemeris are by the latter:
T = 1977 Feb. 13.13 ET
Peri. = 290.41 e = 0.4976
Node = 190.88 1950.0 a = 1.5836 AU
Incl. = 22.83 n = 0.49456
q = 0.7957 AU P = 1.99 years
1977 ET R. A. (1950) Decl. Delta r B
Apr. 22 13 12.35 +34 42.8
27 13 21.12 +33 51.2 0.271 1.201 17.7
May 2 13 27.44 +32 52.6
7 13 32.49 +31 48.7 0.382 1.279 18.5
12 13 36.87 +30 40.1
17 13 40.96 +29 27.5 0.498 1.356 19.2
B = 19.2 + 5 log Delta + 5 log r + 0.023 (phase angle)
PERIODIC COMET JOHNSON (1976h)
Continuation to the ephemeris on IAUC 2911:
1977 ET R. A. (1950) Decl. Delta r m2
May 17 1 32.97 - 0 54.1 3.124 2.377 19.6
27 1 50.90 + 0 23.3
June 6 2 08.26 + 1 32.2 3.035 2.432 19.7
16 2 25.00 + 2 31.7
26 2 41.02 + 3 21.3 2.917 2.492 19.8
July 6 2 56.19 + 4 00.5
16 3 10.41 + 4 29.0 2.773 2.557 19.8
26 3 23.48 + 4 46.6
Aug. 5 3 35.25 + 4 53.5 2.608 2.624 19.9
15 3 45.50 + 4 49.7
25 3 53.98 + 4 35.8 2.431 2.695 19.9
Sept. 4 4 00.49 + 4 12.6
14 4 04.76 + 3 41.4 2.259 2.768 19.9
24 4 06.61 + 3 04.1
Oct. 4 4 05.93 + 2 23.3 2.114 2.842 19.9
14 4 02.73 + 1 42.1
24 3 57.28 + 1 04.8 2.031 2.917 20.0
Nov. 3 3 50.07 + 0 35.7
13 3 41.83 + 0 18.6 2.040 2.993 20.2
23 3 33.43 + 0 16.5
Dec. 3 3 25.73 + 0 30.2 2.160 3.069 20.5
13 3 19.44 + 0 59.3
23 3 15.04 + 1 41.7 2.382 3.145 20.8
PERIODIC COMET FAYE (1976i)
Further precise positions have been reported as follows:
1976/77 UT R. A. (1950) Decl. Observer
Sept.20.05262 20 22 06.25 - 8 04 56.0 Schwartz
Oct. 26.99536 20 41 32.56 -10 51 39.0 "
Nov. 23.07402 21 21 04.02 -10 40 51.7 Torres
25.10104 21 24 41.87 -10 34 53.9 "
Jan. 17.97577 23 24 26.55 - 3 45 19.7 Schwartz
G. Schwartz (Harvard College Observatory). Measurer: J. H. Bulger.
C. Torres (University of Chile, Cerro El Roble Station). Faint
tail 16" long to northeast. Measurer: M. Wischnjewsky.
PERIODIC COMET TAYLOR (1977a)
The following precise positions have been reported:
1976/77 UT R. A. (1950) Decl. m1 Observer
Nov. 23.84645 6 55 14.53 + 7 52 47.6 16.5 Zhukov
23.96138 6 55 15.13 + 7 53 43.4 "
Feb. 16.09953 6 25 08.00 +29 40 28.8 Schwartz
G. V. Zhukov (Alma-Ata Observatory). 38-cm Schmidt telescope.
Prerecovery observations. Communicated by Yu. V. Evdokimov.
G. Schwartz (Harvard College Observatory). Measurer: J. H. Bulger.
1977 April 22 (3063) Brian G. Marsden
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