THE ASTRONOMER Electronic Circular No 704 1993 Jan 30 19.10UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke,
Hants, RG22 4PP,England. Telephone/FAX(0256)471074 Int:+44256471074
TELEX: 9312111261 Answerback: TA G TELECOM GOLD: 10074:MIK2885
GMH at UK.AC.RUTHERFORD.STARLINK.ASTROPHYSICS STARLINK: RLSAC::GMH
GMH at UK.AC.CAM.ASTRONOMY.STARLINK STARLINK: CAVAD::GMH
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1980 AA = 1993 BC2
E. Helin and P. Rose report their discovery of a fast-moving
asteroidal object on films taken with the 0.46-m Schmidt telescope
at Palomar by Helin, K. Lawrence, and Rose. The following positions
were measured by Rose (clouds were present during the last two
exposures on Jan. 21):
1993 UT R.A. (2000) Decl. Mag.
Jan. 21.25122 6 15 43.55 +23 24 04.7 14.0
21.25538 6 15 45.50 +23 23 49.6
21.26910 6 15 52.38 +23 22 54.7
21.27326 6 15 54.35 +23 22 41.7
22.38785 6 25 38.16 +22 11 33.2
22.39271 6 25 40.22 +22 11 20.7
IAUC 5695
G. V. Williams, Minor Planet Center, has found 1993 BC2 to be
identical with an object found by A. Mrkos at Klet in 1980,
yielding the following orbital elements:
Epoch = 1993 Jan. 13.0 TT
T = 1993 Jan. 10.3276 TT Peri. = 168.0400
e = 0.443894 Node = 299.2261 2000.0
q = 1.052286 AU Incl. = 4.1891
a = 1.892240 AU n = 0.3786517 P = 2.603 years
1993 TT R. A. (2000) Decl. Delta r Elong. Phase V
Jan 29 7 17.74 +15 15.2 0.094 1.073 158.6 19.6 14.5
31 7 31.18 +13 19.7 0.098 1.077 159.5 18.7 14.6
Feb. 2 7 43.55 +11 32.4 0.102 1.082 160.1 18.1 14.7
4 7 54.88 + 9 53.9 0.107 1.087 160.4 17.7 14.8
6 8 05.25 + 8 24.5 0.113 1.093 160.6 17.5 14.9
8 8 14.72 + 7 04.2 0.119 1.099 160.6 17.4 15.0
10 8 23.38 + 5 52.7 0.125 1.106 160.5 17.4 15.1
12 8 31.30 + 4 49.5 0.132 1.113 160.2 17.4 15.3
14 8 38.56 + 3 53.9 0.140 1.120 160.0 17.6 15.4
16 8 45.22 + 3 05.3 0.147 1.127 159.6 17.8 15.5
18 8 51.38 + 2 23.0 0.155 1.135 159.3 18.0 15.7
20 8 57.08 + 1 46.3 0.164 1.143 158.8 18.2 15.8
22 9 02.38 + 1 14.7 0.173 1.152 158.4 18.5 15.9
IAUC 5697
Herman Mikuz, Slovenia, has e-mailed details of photometry obtained
with the 0.19-m f/4 flat field camera + V filter + CCD.
1993 Jan 23.81UT, V=14.6 (comparison= HR 2529)
PERIODIC COMET BUS (1993b)
J. V. Scotti, Lunar and Planetary Laboratory, reports his recovery
of this comet with the Spacewatch 0.9-m telescope at Kitt Peak:
1993 UT R.A. (2000) Decl. m2
Jan. 1.19512 5 05 01.43 +19 27 56.9 21.8
1.20817 5 05 00.83 +19 27 56.1 21.0
1.22023 5 05 00.36 +19 27 56.4 21.5
1.23231 5 04 59.76 +19 27 55.7 21.6
21.13902 4 53 40.89 +19 21 00.7 22.1
21.15178 4 53 40.53 +19 21 00.4 21.8
21.16389 4 53 40.22 +19 21 00.6 21.7
21.17677 4 53 39.91 +19 21 00.3 21.8
The Jan. 1 images are stellar, but the Jan. 21 images showed the
slightest hint of being nonstellar. The indicated correction to
the prediction on MPC 19257 is Delta T = +0.05 day.
IAUC 5696
Guy M Hurst