Central Bureau for Astronomical Telegrams
IAUC 4981: 1990b
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Read IAUC 4982
Circular No. 4981
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM EASYLINK 62794505
MARSDEN or GREEN@CFA.BITNET MARSDEN or GREEN@CFAPS2.SPAN
COMET CERNIS-KIUCHI-NAKAMURA (1990b)
The following precise positions have been reported:
1990 UT R.A. (1950) Decl. m1 Observer
Mar. 17.47188 1 08 49.19 +44 40 22.1 9.2 Seki
18.44410 1 14 26.17 +45 13 39.7 8.5 "
19.20590 1 18 57.68 +45 39 15.4 Tatum
19.42465 1 20 16.56 +45 46 36.3 8 Kojima
19.42795 1 20 17.73 +45 46 43.3 "
19.43530 1 20 20.37 +45 46 57.0 "
T. Seki (Geisei). 0.60-m reflector.
J. B. Tatum (Climenhaga Observatory, Victoria).
T. Kojima (YGCO Chiyoda Observatory). 0.25-m f/3.4 Wright-Schmidt
camera.
The following preliminary parabolic orbital elements, from
the above observations, are by S. Nakano, Center for Astrophysics:
T = 1990 Mar. 17.128 ET Peri. = 100.367
Node = 347.641 1950.0
q = 1.06971 AU Incl. = 48.143
1990 ET R.A. (1950) Decl. Delta r m1
Feb. 8 22 59.17 +22 51.8 1.716 1.231 9.6
13 23 10.19 +25 26.9
18 23 22.49 +28 10.5 1.634 1.160 9.2
23 23 36.33 +31 02.2
28 23 52.04 +34 00.9 1.544 1.107 8.9
Mar. 5 0 10.07 +37 04.8
10 0 30.94 +40 10.7 1.454 1.076 8.6
15 0 55.29 +43 13.4
20 1 23.79 +46 05.6 1.376 1.071 8.5
25 1 56.98 +48 37.3
30 2 34.97 +50 36.0 1.321 1.091 8.5
Apr. 4 3 17.10 +51 48.7
9 4 01.62 +52 04.8 1.302 1.135 8.6
1990 March 19 (4981) Daniel W. E. Green
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