Central Bureau for Astronomical Telegrams
IAUC 2236: SECOND OBJECT KOWAL; Obs OF COMETS; P/JOHNSON
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Read IAUC 2237
Circular No. 2236
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
SECOND OBJECT KOWAL
Mr. C. Kowal, Department of Astrophysics, California Institute
of Technology, has discovered another fast-moving object on plates
exposed with the 122-cm Palomar Schmidt. The object is apparently
of stellar appearance. The positions given below refer to the
beginnings and ends of the trails on the two 15-min exposures, but
the final one is uncertain on account of confusion with the image
of a galaxy.
1970 UT R. A. (1950) Decl. Mag.
Jan. 31.27941 8 24 22.10 +17 10 02.2 15-16
31.28983 8 24 18.90 +17 10 05.7
Feb. 1.35210 8 18 48.00 +17 18 15.2
1.36251 8 18 44.90 +17 18 17.5
OBSERVATIONS OF COMETS
Dr. H. Debehogne, Royal Observatory, Uccle, communicates the
following precise positions of comets Whitaker-Thomas (1968 V) and
Honda (1968 VI), obtained with the 40-cm f/5 double astrograph.
Calculated by G. Roland.
Comet 1968 UT R. A. (1950) Decl.
1968 V June 21.04429 15 19 28.68 +16 40 07.4
1968 VI Aug. 20.90447 4 20 27.16 +73 50 24.0
20.90689 4 20 24.34 +73 50 34.7
23.02263 3 53 42.25 +77 34 13.4
23.06624 3 52 56.80 +77 38 57.6
24.04551 3 32 09.35 +79 25 40.1
24.89804 3 06 09.78 +80 56 50.4
27.00615 0 58 59.85 +83 55 00.5
Sept. 5.06434 18 35 52.07 +64 05 39.6
6.03408 18 30 08.82 +60 55 40.3
6.03507 18 30 08.06 +60 55 32.6
10.94286 18 13 46.56 +45 08 02.9
10.94424 18 13 45.93 +45 07 47.2
10.94528 18 13 45.93 +45 07 36.6
12.00003 18 11 47.29 +41 56 05.8
PERIODIC COMET JOHNSON
Dr. N. A. Beljaev, Institute for Theoretical Astronomy, Leningrad,
communicates the following elements and ephemeris by E. A.
Vorob'ev, Ul'janovsk Polytechnic Institute; cf. IAUC 2131.
T = 1970 Mar. 30.5348 ET Epoch = 1970 Apr. 4.0 ET
Peri. = 206.0495 e = 0.385524
Node = 117.8236 1950.0 a = 3.58026 AU
Incl. = 13.8877 n = 0.1454899
q = 2.19998 AU P = 6.774 years
1970 ET R. A. (1950) Decl. Delta r Variation Mag.
May 14 0 12.63 - 6 55.6 2.684 2.223 -1.04 - 4.0 19.1
24 0 31.46 - 5 44.8 -1.04 - 4.3
June 3 0 49.61 - 4 41.7 2.527 2.248 -1.04 - 4.6 19.0
13 1 07.00 - 3 47.9 -1.04 - 4.8
23 1 23.49 - 3 05.0 2.360 2.281 -1.05 - 5.1 18.9
July 3 1 38.94 - 2 34.1 -1.06 - 5.4
13 1 53.15 - 2 16.8 2.185 2.322 -1.08 - 5.8 18.8
23 2 05.91 - 2 13.5 -1.10 - 6.3
Aug. 2 2 16.95 - 2 25.2 2.012 2.370 -1.13 - 6.8 18.8
12 2 26.01 - 2 51.8 -1.17 - 7.3
22 2 32.79 - 3 33.0 1.850 2.424 -1.22 - 7.9 18.7
Sept. 1 2 37.01 - 4 27.1 -1.28 - 8.6
11 2 38.48 - 5 31.2 1.721 2.483 -1.34 - 9.1 18.6
21 2 37.15 - 6 40.6 -1.40 - 9.6
Oct. 1 2 33.20 - 7 49.0 1.650 2.546 -1.46 - 9.9 18.6
11 2 27.11 - 8 48.9 -1.49 - 9.9
21 2 19.64 - 9 33.1 1.664 2.613 -1.50 - 9.6 18.8
31 2 11.78 - 9 55.9 -1.48 - 9.1
Nov. 10 2 04.51 - 9 54.6 1.778 2.683 -1.43 - 8.4 19.0
20 1 58.67 - 9 29.4 -1.35 - 7.8
30 1 54.80 - 8 43.1 1.986 2.755 -1.26 - 7.1 19.4
Dec. 10 1 53.14 - 7 40.0 -1.17 - 6.5
20 1 53.72 - 6 23.8 2.263 2.829 -1.08 - 6.0 19.8
30 1 56.40 - 4 58.6 -1.00 - 5.6
Jan. 9 2 00.97 - 3 27.6 2.586 2.904 -0.92 - 5.2 20.2
19 2 07.19 - 1 53.2 -0.85 - 4.8
29 2 14.82 - 0 17.6 2.927 2.979 -0.79 - 4.5 20.6
Feb. 8 2 23.66 + 1 17.6 -0.74 - 4.2
18 2 33.50 + 2 51.0 3.267 3.055 -0.70 - 3.9 20.9
28 2 44.19 + 4 21.7 -0.66 - 3.7
Mag. = 13.5 + 5 log Delta + 10 log r
1970 April 21 (2236) Brian G. Marsden
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