Central Bureau for Astronomical Telegrams
IAUC 4406: 1987 KF; N Her 1987
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Circular No. 4406
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
1987 KF
D. J. Tholen, University of Hawaii, provides the following
precise positions, obtained using the encoders on the 2.24-m
reflector at Mauna Kea:
1987 UT R.A. (1950) Decl. V
June 8.36863 14 31 48.05 + 8 41 29.8 16.8
8.47128 14 31 49.64 + 8 37 24.9
Orbital elements from seven observations May 29-June 8:
T = 1987 Mar. 11.2599 ET
W = 15.2415 e = 0.676753
O = 107.7484 1950.0 a = 1.826068 AU
i = 11.8167 n = 0.3994189
q = 0.590270 AU P = 2.468 years
1987 ET R.A. (1950) Decl. Delta r V
June 14 14 34.07 + 5 19.0 0.649 1.514 17.1
19 14 36.66 + 2 46.4
24 14 39.74 + 0 33.5 0.802 1.612 17.7
29 14 43.27 - 1 24.0
July 4 14 47.21 - 3 08.9 0.967 1.706 18.3
9 14 51.51 - 4 43.6
14 14 56.13 - 6 09.8 1.141 1.796 18.7
19 15 01.04 - 7 28.7
24 15 06.23 - 8 41.5 1.323 1.881 19.2
29 15 11.67 - 9 49.0
Aug. 3 15 17.35 -10 51.9 1.511 1.963 19.5
8 15 23.24 -11 50.7
13 15 29.33 -12 45.7 1.703 2.040 19.8
NOVA HERCULIS 1987
Photoelectric photometry by R. Monella, Covo, Italy: May
28.955 UT, V = 11.71, B-V = +0.34, U-B = -0.81; 30.982, 11.69,
+0.31, -0.88; June 1.952, 11.63, +0.26, -0.93.
Visual magnitude estimates: May 19.09 UT, 11.3 (A. Pereira,
Linda-A-Velha, Portugal); 23.99, 11.4 (S. Korth, Monheim, West
Germany); 26.01, 11.5 (Pereira); June 1.02, 11.6 (Pereira); 2.04,
11.7 (Pereira); 3.05, 11.7 (Pereira); 8.09, 11.7 (Pereira).
1987 June 13 (4406) Brian G. Marsden
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