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M.P.E.C. 1998-S07 Issued 1998 Sept. 18, 15:46 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Commission 20 of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.
BMARSDEN@CFA.HARVARD.EDU or GWILLIAMS@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html
1998 SO
Observations:
J98S00O* C1998 09 16.39572 00 50 16.88 +02 30 04.5 18.9 V 691
J98S00O C1998 09 16.41625 00 50 09.03 +02 27 53.8 19.1 V 691
J98S00O C1998 09 16.43699 00 50 01.17 +02 25 42.3 19.2 V 691
J98S00O C1998 09 16.45310 00 49 55.04 +02 23 59.8 19.2 V 691
J98S00O C1998 09 16.45941 00 49 52.67 +02 23 20.5 19.4 V 691
J98S00O C1998 09 16.46420 00 49 50.88 +02 22 49.1 19.0 V 691
J98S00O C1998 09 16.46986 00 49 48.70 +02 22 13.6 18.7 V 691
J98S00O C1998 09 16.47886 00 49 45.35 +02 21 15.5 19.1 V 691
J98S00O C1998 09 16.49820 00 49 38.00 +02 19 12.5 18.7 V 691
J98S00O C1998 09 16.50489 00 49 35.52 +02 18 30.0 18.9 V 691
J98S00O C1998 09 17.27365 00 44 50.04 +00 55 45.6 19.1 V 691
J98S00O C1998 09 17.28009 00 44 47.48 +00 55 03.7 18.9 V 691
J98S00O C1998 09 17.28611 00 44 45.16 +00 54 23.7 18.9 V 691
J98S00O C1998 09 17.34602 00 44 21.69 +00 47 51.5 693
J98S00O C1998 09 17.34714 00 44 21.29 +00 47 44.5 693
J98S00O C1998 09 17.42248 00 43 51.62 +00 39 31.5 18.6 V 691
J98S00O C1998 09 17.43358 00 43 47.22 +00 38 19.4 18.5 V 691
J98S00O C1998 09 17.56181 00 43 00.07 +00 24 54.7 18.9 R 422
J98S00O C1998 09 17.56270 00 42 59.77 +00 24 47.9 18.7 R 422
J98S00O C1998 09 17.56432 00 42 59.03 +00 24 37.5 18.6 R 422
J98S00O C1998 09 17.56670 00 42 58.15 +00 24 22.2 18.4 R 422
J98S00O C1998 09 17.56773 00 42 57.73 +00 24 15.8 18.5 R 422
J98S00O C1998 09 17.89971 00 40 50.56 -00 13 02.9 18.2 R 587
J98S00O C1998 09 17.90243 00 40 49.45 -00 13 21.1 587
J98S00O C1998 09 17.90475 00 40 48.50 -00 13 36.8 587
J98S00O C1998 09 18.51525 00 36 50.49 -01 20 53.4 19.2 R 422
J98S00O C1998 09 18.51742 00 36 49.64 -01 21 07.8 18.8 R 422
J98S00O C1998 09 18.51837 00 36 49.26 -01 21 14.5 19.0 R 422
J98S00O C1998 09 18.51928 00 36 48.88 -01 21 20.3 19.1 R 422
J98S00O C1998 09 18.60954 00 36 12.67 -01 31 28.9 426
J98S00O C1998 09 18.61578 00 36 10.17 -01 32 10.6 426
J98S00O C1998 09 18.62505 00 36 06.43 -01 33 13.7 426
J98S00O C1998 09 18.62877 00 36 04.80 -01 33 39.2 426
J98S00O C1998 09 18.63231 00 36 03.43 -01 34 03.8 426
Observer details:
422 Loomberah. Observer G. J. Garradd. 0.45-m f/5.4 reflector + CCD.
426 Woomera. Observer F. B. Zoltowski. 0.30-m f/3.3 Schmidt-Cassegrain + CCD.
587 Sormano. Observers F. Manca, P. Ghezzi. 0.5-m reflector + CCD.
691 Steward Observatory, Kitt Peak. Observer J. Montani. 0.9-m Spacewatch
telescope.
693 Catalina Station, Tucson. Observer C. W. Hergenrother. 1.54-m reflector
+ CCD.
Orbital elements:
1998 SO
Epoch 1998 Sept. 4.0 TT = JDT 2451060.5 Williams
M 165.57807 (2000.0) P Q
n 1.57572733 Peri. 359.78041 -0.99754992 -0.06142509
a 0.7313894 Node 176.17977 +0.06492721 -0.99110625
e 0.6975101 Incl. 30.16886 +0.02605015 +0.11804808
P 0.63 H 21.0 G 0.15
From 34 observations 1998 Sept. 16-18.
Ephemeris:
1998 SO a,e,i = 0.73, 0.70, 30 q = 0.2212
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1998 09 14 01 04.39 +06 33.6 0.257 1.241 153.7 21.1 19.6
1998 09 16 00 52.71 +03 12.1 0.248 1.241 159.5 16.5 19.3
1998 09 18 00 40.18 -00 23.6 0.241 1.240 165.2 12.0 19.1
1998 09 20 00 26.90 -04 09.9 0.237 1.238 170.0 8.1 18.9
1998 09 22 00 13.01 -08 01.5 0.235 1.236 171.3 7.1 18.8
1998 09 24 23 58.67 -11 52.4 0.235 1.234 167.8 9.9 19.0
1998 09 26 23 44.09 -15 36.5 0.237 1.230 162.1 14.5 19.1
1998 09 28 23 29.49 -19 08.4 0.242 1.227 155.9 19.5 19.3
1998 09 30 23 15.09 -22 23.9 0.248 1.222 149.8 24.4 19.5
1998 10 02 23 01.08 -25 20.5 0.257 1.218 143.8 29.0 19.7
1998 10 04 22 47.63 -27 57.1 0.267 1.212 138.1 33.4 19.9
1998 10 06 22 34.89 -30 14.1 0.278 1.206 132.8 37.4 20.1
1998 10 08 22 22.93 -32 12.7 0.291 1.200 127.8 41.1 20.3
1998 10 10 22 11.83 -33 54.5 0.304 1.193 123.2 44.5 20.5
1998 10 12 22 01.60 -35 21.5 0.319 1.185 118.8 47.5 20.7
1998 10 14 21 52.23 -36 35.6 0.333 1.177 114.8 50.3 20.8
1998 10 16 21 43.72 -37 38.7 0.349 1.168 111.0 52.8 21.0
1998 10 18 21 36.01 -38 32.4 0.364 1.159 107.4 55.1 21.1
1998 10 20 21 29.06 -39 18.3 0.380 1.149 104.0 57.2 21.3
1998 10 22 21 22.81 -39 57.6 0.396 1.138 100.9 59.2 21.4
1998 10 24 21 17.19 -40 31.5 0.411 1.127 97.8 61.0 21.5
1998 10 26 21 12.16 -41 00.9 0.427 1.115 94.9 62.6 21.6
1998 10 28 21 07.63 -41 26.5 0.442 1.103 92.2 64.2 21.7
1998 10 30 21 03.56 -41 49.1 0.458 1.090 89.5 65.7 21.8
1998 11 01 20 59.89 -42 09.1 0.472 1.076 86.9 67.1 21.9
1998 11 03 20 56.55 -42 27.0 0.487 1.062 84.4 68.4 22.0
Gareth V. Williams (C) Copyright 1998 MPC M.P.E.C. 1998-S07
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