MPEC 1998-Y31 : 1998 YB8
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Read MPEC 1998-Y30
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M.P.E.C. 1998-Y31 Issued 1998 Dec. 26, 19:55 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 YB8
Observations:
J98Y08B C1998 12 15.46099 07 19 26.72 +11 36 14.4 18.6 704
J98Y08B C1998 12 15.47571 07 19 27.60 +11 36 33.6 19.2 704
J98Y08B C1998 12 15.49052 07 19 28.66 +11 36 55.0 19.3 704
J98Y08B C1998 12 15.50529 07 19 29.65 +11 37 17.4 18.9 704
J98Y08B C1998 12 15.52007 07 19 30.64 +11 37 35.4 19.6 704
J98Y08B* C1998 12 22.43705 07 27 21.27 +14 35 43.1 18.5 704
J98Y08B C1998 12 22.45983 07 27 22.46 +14 36 21.2 18.4 704
J98Y08B C1998 12 22.48268 07 27 23.61 +14 36 58.1 18.4 704
J98Y08B C1998 12 22.50627 07 27 24.96 +14 37 37.1 18.2 704
J98Y08B C1998 12 23.94910 07 28 52.63 +15 17 45.2 557
J98Y08B C1998 12 23.95038 07 28 52.71 +15 17 47.2 557
J98Y08B C1998 12 23.95167 07 28 52.76 +15 17 49.4 18.1 V 557
J98Y08B C1998 12 23.95272 07 28 52.87 +15 17 51.6 17.9 R 113
J98Y08B C1998 12 23.95773 07 28 53.08 +15 17 59.7 17.8 R 113
J98Y08B C1998 12 23.96434 07 28 53.44 +15 18 11.4 17.9 R 113
J98Y08B C1998 12 23.97150 07 28 53.78 +15 18 23.9 17.9 R 113
J98Y08B C1998 12 24.00388 07 28 55.43 +15 19 18.4 16.8 V 046
J98Y08B C1998 12 24.00648 07 28 55.53 +15 19 22.8 046
J98Y08B C1998 12 24.00766 07 28 55.62 +15 19 25.1 046
J98Y08B C1998 12 24.01521 07 28 55.95 +15 19 37.6 046
J98Y08B C1998 12 25.65220 07 30 28.71 +16 06 19.3 17.1 V 402
J98Y08B C1998 12 25.65360 07 30 28.79 +16 06 21.7 402
J98Y08B C1998 12 25.65498 07 30 28.86 +16 06 24.2 402
J98Y08B C1998 12 25.65637 07 30 28.93 +16 06 26.8 402
J98Y08B C1998 12 25.67976 07 30 29.56 +16 07 36.9 17.3 R 422
J98Y08B C1998 12 25.68383 07 30 29.73 +16 07 43.7 17.0 R 422
J98Y08B C1998 12 25.68450 07 30 29.78 +16 07 45.2 17.1 R 422
J98Y08B C1998 12 25.68666 07 30 29.87 +16 07 48.4 17.3 R 422
J98Y08B C1998 12 25.68859 07 30 29.94 +16 07 51.6 16.8 R 422
J98Y08B C1998 12 25.93409 07 30 44.84 +16 14 21.5 17.5 V 108
J98Y08B C1998 12 25.93538 07 30 44.64 +16 14 21.7 17.0 V 046
J98Y08B C1998 12 25.93690 07 30 44.70 +16 14 24.5 046
J98Y08B C1998 12 25.93832 07 30 44.77 +16 14 26.6 046
J98Y08B C1998 12 25.93860 07 30 44.91 +16 14 30.5 108
J98Y08B C1998 12 25.93979 07 30 44.87 +16 14 29.6 046
J98Y08B C1998 12 25.94127 07 30 44.91 +16 14 32.3 046
J98Y08B C1998 12 25.94311 07 30 45.15 +16 14 35.6 108
J98Y08B C1998 12 25.95075 07 30 45.42 +16 14 49.4 17.5 V 108
J98Y08B C1998 12 26.27341 07 31 02.91 +16 24 12.6 734
J98Y08B C1998 12 26.27856 07 31 03.11 +16 24 21.6 734
J98Y08B C1998 12 26.28365 07 31 03.23 +16 24 29.8 734
Observer details:
046 Klet. Observers J. Ticha, M. Tichy, Z. Moravec. Measurers Z. Moravec,
M. Tichy. 0.57-m f/5.2 reflector + CCD.
108 Montelupo. Observers M. Tombelli, D. Guidetti, G. Forti, E. Masotti,
L. Tesi. 0.30-m f/5.7 Schmidt-Cassegrain + CCD.
113 Volkssternwarte Drebach, Schoenbrunn. Observers G. Lehmann, J. Kandler.
0.50-m f/4.0 reflector + CCD.
402 Dynic Astronomical Observatory. Observer A. Sugie. 0.60-m f/3.7 reflector
+ CCD.
422 Loomberah. Observer G. J. Garradd. 0.45-m f/5.4 reflector + CCD.
557 Ondrejov. Observer L. Sarounova. 0.65-m f/3.6 reflector + CCD.
704 Lincoln Laboratory ETS, New Mexico. Observers M. Blythe, F. Shelly,
M. Bezpalko. Measurers J. Stuart, H. Viggh, R. Sayer. 1.0-m f/2.15
reflector + CCD.
734 Farpoint Observatory. Observers G. Hug, G. Bell. 0.30-m
Schmidt-Cassegrain + CCD.
Orbital elements:
1998 YB8
Epoch 1998 Dec. 13.0 TT = JDT 2451160.5 Williams
M 359.48730 (2000.0) P Q
n 0.26197832 Peri. 342.26944 +0.01324312 -0.98893120
a 2.4189440 Node 106.77154 +0.93508502 -0.04010171
e 0.4719020 Incl. 8.87899 +0.35417597 +0.14285285
P 3.76 H 18.8 G 0.15
From 41 observations 1998 Dec. 15-26.
Ephemeris:
1998 YB8 a,e,i = 2.42, 0.47, 9 q = 1.2774
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1998 12 23 07 27.93 +14 51.5 0.313 1.280 158.5 16.4 17.7
1999 01 02 07 36.46 +19 43.1 0.313 1.291 168.4 8.8 17.4
1999 01 12 07 42.66 +24 32.4 0.327 1.310 176.3 2.8 17.3
1999 01 22 07 47.87 +28 36.7 0.357 1.337 169.3 7.9 17.8
1999 02 01 07 53.84 +31 30.8 0.403 1.370 159.9 14.3 18.3
1999 02 11 08 01.60 +33 12.2 0.462 1.409 151.3 19.7 18.9
1999 02 21 08 11.59 +33 50.5 0.535 1.454 143.5 23.9 19.4
1999 03 03 08 23.78 +33 39.6 0.620 1.502 136.4 27.1 19.9
1999 03 13 08 37.69 +32 52.7 0.716 1.553 129.9 29.4 20.3
1999 03 23 08 52.84 +31 39.6 0.824 1.608 123.8 31.0 20.7
1999 04 02 09 08.85 +30 08.0 0.941 1.664 118.0 32.0 21.1
1999 04 12 09 25.32 +28 23.4 1.068 1.721 112.5 32.6 21.5
1999 04 22 09 42.02 +26 29.5 1.203 1.780 107.1 32.7 21.8
1999 05 02 09 58.80 +24 29.4 1.345 1.839 101.9 32.4 22.1
Gareth V. Williams (C) Copyright 1998 MPC M.P.E.C. 1998-Y31
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- B01 (the abbreviated form)