Central Bureau for Astronomical Telegrams
IAUC 5374: 1991y; 1991r
The following International Astronomical Union Circular may be linked-to from your own Web pages, but must not otherwise be redistributed (see these notes on the conditions under which circulars are made available on our WWW site).
Read IAUC 5375
Circular No. 5374
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
PERIODIC COMET McNAUGHT-HUGHES (1991y)
R. H. McNaught provides the following additional measurements
from films taken with the Uppsala Southern Schmidt telescope at
Siding Spring:
1991 UT R.A. (1950) Decl.
Oct. 9.48056 23 07 01.37 -18 36 00.5
12.60932 23 06 25.73 -18 27 02.1
Improved orbital elements from 8 observations, Sept. 30-Oct. 12:
T = 1991 June 16.320 ET Peri. = 224.450
e = 0.40190 Node = 89.333 1950.0
q = 2.12527 AU Incl. = 7.299
a = 3.55335 AU n = 0.147145 P = 6.70 years
1991 ET R.A. (1950) Decl. Delta r m1
Oct. 31 23 07.96 -16 56.1 1.641 2.349 17.1
Nov. 10 23 12.20 -15 44.6
20 23 18.55 -14 21.5 1.915 2.411 17.6
30 23 26.65 -12 49.6
Dec. 10 23 36.21 -11 11.0 2.219 2.478 18.1
20 23 46.97 - 9 27.3
30 23 58.67 - 7 40.3 2.537 2.549 18.6
COMET HELIN-ALU (1991r)
Orbital elements from MPC 18773:
T = 1992 Feb. 20.0741 ET Peri. = 30.8133
Node = 252.9525 1950.0
q = 4.850069 AU Incl. = 49.3134
1991 ET R.A. (1950) Decl. Delta r m1
Oct. 31 17 04.55 -12 01.9 5.635 4.928 15.7
Nov. 10 17 13.43 -11 35.2
20 17 22.75 -11 05.9 5.765 4.903 15.7
30 17 32.38 -10 33.0
Dec. 10 17 42.24 - 9 55.9 5.822 4.883 15.7
20 17 52.21 - 9 13.7
30 18 02.20 - 8 26.0 5.803 4.867 15.7
1991 October 24 (5374) Daniel W. E. Green
Read IAUC 5375
Our Web policy. Index to the CBAT/MPC/ICQ pages.
