Central Bureau for Astronomical Telegrams
IAUC 4064: 1985 JA; V651 Mon (CENTRAL STAR IN NGC 2346)
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Circular No. 4064
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TWX 710-320-6842 ASTROGRAM CAM Telephone 617-495-7244/7440/7444
1985 JA
Precise positions obtained at the Lowell Observatory's
Anderson Mesa Station (0.33-m photographic telescope on May 18 and
20, 1.8-m reflector and CCD on May 19 and 21) by N. G. Thomas, E.
Bowell, S. J. Bus and T. J. Kreidl:
1985 UT R.A. (1950.0) Decl. Mag.
May 18.28993 15 08 51.81 -10 18 30.0 16.5
18.31076 15 08 50.44 -10 16 37.2
18.34792 15 08 47.64 -10 13 09.0
19.27135 15 07 51.91 - 8 49 32.8
19.27656 15 07 51.56 - 8 49 05.1
20.23270 15 06 56.62 - 7 25 48.6 16.5
20.23964 15 06 56.04 - 7 25 12.3
21.40000 15 05 52.28 - 5 48 35.5
21.40382 15 05 52.06 - 5 48 16.8
Improved orbital elements from 13 observations May 11-21:
T = 1985 Feb. 15.336 ET
Peri. = 285.698 e = 0.29653
Node = 232.022 1950.0 a = 1.56700 AU
Incl. = 35.115 n = 0.502457
q = 1.10234 AU P = 1.96 years
1985 ET R.A. (1950.0) Decl. p r Mag.
May 25 15 03.14 - 1 19.1 0.383 1.370 17.0
30 15 00.50 + 3 42.8
June 4 14 59.08 + 7 32.7 0.475 1.413 17.8
9 14 58.74 +10 24.4
14 14 59.35 +12 30.2 0.582 1.456 18.4
19 15 00.82 +13 59.8
24 15 03.06 +15 01.3 0.699 1.498 18.9
29 15 06.01 +15 40.8
July 4 15 09.57 +16 03.1 0.820 1.540 19.4
V651 MONOCEROTIS (CENTRAL STAR IN NGC 2346)
Visual magnitude estimates by M. Verdenet, Bourbon-Lancy,
France: Mar. 9.7, 13.4-13.8; 10.7, 14.3; 12.7, [14.5; 14.7, 14.2;
18.7, 11.7; 20.7, 11.3; 21.7, 11.3; 24.7, 11.6; Apr. 2.7, 12.6;
6.7, 11.5; 10.7, 12.9; 17.7, 11.5; 18.7, 11.7; 19.7, 11.5.
1985 May 23 (4064) Brian G. Marsden
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