Central Bureau for Astronomical Telegrams
IAUC 5166: 1991 AM; 1991a
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Circular No. 5166
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
1991 AM
J. V. Scotti, University of Arizona, reports his discovery of
a fast-moving asteroidal object with the Spacewatch telescope at
Kitt Peak:
1991 UT R.A. (1950) Decl. V
Jan. 14.49137 13 49 06.79 +13 19 43.4
14.50006 13 49 09.08 +13 19 48.0 18.6
14.50899 13 49 11.44 +13 19 53.2
14.54826 13 49 21.83 +13 20 15.7
15.40140 13 53 12.42 +13 28 21.5 18.7
15.40998 13 53 14.88 +13 28 26.1
15.41909 13 53 17.21 +13 28 31.7
15.52361 13 53 45.54 +13 29 33.4
15.53235 13 53 47.90 +13 29 38.8
15.54138 13 53 50.29 +13 29 43.7
16.39225 13 57 45.96 +13 38 03.5 18.6
16.39749 13 57 47.42 +13 38 06.5
16.40828 13 57 50.44 +13 38 13.1
Preliminary elements by B. G. Marsden, Center for Astrophysics:
T = 1991 Apr. 5.984 ET Peri. = 152.924
e = 0.67649 Node = 124.274 1950.0
q = 0.52666 AU Incl. = 29.591
a = 1.62795 AU n = 0.474509 P = 2.08 years
1991 ET R.A. (1950) Decl. Delta r V
Jan. 14 13 46.93 +13 15.2 0.910 1.373 18.7
19 14 10.30 +14 04.9
24 14 36.77 +15 00.1 0.772 1.265 18.3
29 15 06.83 +15 57.1
Feb. 3 15 40.76 +16 50.0 0.668 1.151 18.0
PERIODIC COMET METCALF-BREWINGTON (1991a)
Total visual magnitude estimates (cf. IAUC 5160): Jan. 11.44
UT, 8.5 (D. A. J. Seargent, The Entrance, N.S.W., 15x80 binoculars);
13.16, 8.4 (C. S. Morris, Pine Mountain Club, CA, 20x80 binoculars;
30' tail in p.a. 70 deg); 15.98, 8.5 (J. E. Bortle, Stormville, NY,
20x80 binoculars).
1991 January 17 (5166) Daniel W. E. Green
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