Central Bureau for Astronomical Telegrams
IAUC 3026: 1976 UA; 1976 AA; 1976k
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Read IAUC 3027
Circular No. 3026
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
1976 UA
E. Roemer, University of Arizona, provides the following
precise positions, obtained by C. A. Heller and herself with the
Steward Observatory's 229-cm reflector, Kitt Peak. The images are
weak and diffuse in poor seeing. Measurer: C. D. Vesely.
1976 UT R. A. (1950) Decl.
Nov. 27.11198 0 38 11.06 - 4 48 36.3
27.16597 0 38 13.66 - 4 48 16.1
1976 AA
E. Roemer also provides all the following precise positions,
again measured by C. D. Vesely.
1976 UT R. A. (1950) Decl. Note
June 24.44630 2 32 27.92 + 5 24 42.5 1
25.44764 2 36 01.46 + 5 08 11.2 1
July 31.46020 4 35 13.31 + 0 19 37.9 2
Aug. 1.45964 4 38 16.20 + 0 16 16.5 2
Sept.19.49375 6 54 03.74 - 1 45 54.0 1
Nov. 24.48681 9 41 04.70 - 2 21 28.8 3
Dec. 24.48750 11 24 44.49 + 5 17 25.3 3
24.50556 11 24 49.10 + 5 17 56.3 3
Note 1. Steward Observatory's 229-cm reflector, Kitt Peak. L. M.
Vaughn assisted.
Note 2. Steward reflector. C. A. Heller assisted.
Note 3. Lunar and Planetary Laboratory's 154-cm reflector.
P. Herget, Cincinnati Observatory, has provided an ephemeris
that is preferable to the one on IAUC 2966. The following results,
by B. G. Marsden, are based on 52 observations 1976 Jan. 7-Dec. 24:
T = 1977 May 2.2387 ET Epoch = 1977 May 17.0 ET
Peri. = 147.8058 e = 0.182553
Node = 108.0722 1950.0 a = 0.966361 AU
Incl. = 18.9349 n = 1.037516
q = 0.789949 AU P = 0.950 year
1977 ET R. A. (1950) Decl. Delta r Mag.
Jan. 17 13 44.43 +21 39.2 0.239 1.050 16.5
22 14 23.95 +25 33.7
27 15 05.52 +28 55.5 0.234 1.023 16.6
Feb. 1 15 47.47 +31 28.0
6 16 28.04 +33 05.2 0.250 0.993 16.8
11 17 05.86 +33 50.5
16 17 40.23 +33 53.1 0.279 0.962 17.1
21 18 11.04 +33 22.3
26 18 38.63 +32 26.0 0.315 0.929 17.4
Mar. 3 19 03.54 +31 10.2
8 19 26.37 +29 39.2
18 20 07.92 +26 04.8 0.395 0.867 17.9
28 20 46.66 +22 01.9
Apr. 7 21 24.94 +17 46.9 0.481 0.816 18.2
17 22 04.12 +13 39.5
27 22 44.59 + 9 58.9 0.580 0.791 18.5
COMET LOVAS (1976k)
The following precise positions were obtained by E. Roemer and
C. A. Heller with the Steward Observatory's 229-cm reflector, Kitt
Peak. Measurer: C. D. Vesely. The images of the comet were well
condensed, with the suggestion of a tail to the south-southwest.
1976 UT R. A. (1950) Decl. m2
Dec. 27.42274 8 07 39.22 +73 27 09.4 ~19.2
27.44521 8 07 35.56 +73 27 07.8
Ephemeris from the orbital elements on IAUC 3023:
1977 ET R. A. (1950) Decl. Delta r m2
Jan. 7 7 38.0 +72 58.8
17 7 11.8 +72 03.2 5.347 6.009 19.4
27 6 49.5 +70 42.2
Feb. 6 6 32.34 +69 02.1 5.477 6.043 19.5
16 6 20.20 +67 09.8
26 6 12.53 +65 11.4 5.697 6.081 19.6
Mar. 8 6 08.57 +63 12.0
18 6 07.57 +61 15.0 5.981 6.121 19.8
28 6 08.89 +59 22.8
Apr. 7 6 12.02 +57 36.6 6.297 6.164 19.9
17 6 16.53 +55 57.0
27 6 22.09 +54 24.1 6.609 6.210 20.0
May 7 6 28.43 +52 57.9
17 6 35.32 +51 37.8 6.889 6.259 20.2
27 6 42.60 +50 23.5
June 6 6 50.09 +49 14.5 7.113 6.310 20.3
m2 = 8.0 + 5 log Delta + 10 log r
1977 January 13 (3026) Brian G. Marsden
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