MPEC 1998-Y39: 1998 YR11
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M.P.E.C. 1998-Y39 Issued 1998 Dec. 29, 16:25 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 YR11
Observations:
J98Y11R* C1998 12 23.41851 11 15 02.47 +00 41 46.3 18.4 704
J98Y11R C1998 12 23.42901 11 15 03.90 +00 43 10.3 18.8 704
J98Y11R C1998 12 23.43950 11 15 05.26 +00 44 35.5 19.1 704
J98Y11R C1998 12 23.45001 11 15 06.72 +00 46 00.7 19.2 704
J98Y11R C1998 12 24.10233 11 16 37.80 +02 14 44.2 557
J98Y11R C1998 12 24.10255 11 16 37.93 +02 14 46.0 18.5 V 046
J98Y11R C1998 12 24.10310 11 16 37.91 +02 14 50.7 557
J98Y11R C1998 12 24.10344 11 16 38.03 +02 14 53.2 046
J98Y11R C1998 12 24.10466 11 16 38.16 +02 15 03.4 18.7 V 557
J98Y11R C1998 12 24.10490 11 16 38.21 +02 15 06.3 046
J98Y11R C1998 12 24.10660 11 16 38.43 +02 15 20.0 046
J98Y11R C1998 12 24.10767 11 16 38.61 +02 15 27.6 046
J98Y11R C1998 12 25.71875 11 20 28.32 +06 05 18.1 18.2 R 422
J98Y11R C1998 12 25.71929 11 20 28.40 +06 05 22.7 18.2 R 422
J98Y11R C1998 12 25.71985 11 20 28.43 +06 05 27.5 18.1 R 422
J98Y11R C1998 12 25.72052 11 20 28.50 +06 05 33.4 18.3 R 422
J98Y11R C1998 12 28.72471 11 27 54.29 +13 47 04.7 17.8 V 402
J98Y11R C1998 12 28.72610 11 27 54.53 +13 47 21.9 402
J98Y11R C1998 12 28.72749 11 27 54.72 +13 47 32.2 402
J98Y11R C1998 12 28.72888 11 27 54.89 +13 47 45.8 402
J98Y11R C1998 12 29.11024 11 28 52.76 +14 49 05.3 557
J98Y11R C1998 12 29.11649 11 28 53.68 +14 50 06.3 557
J98Y11R C1998 12 29.12065 11 28 54.29 +14 50 46.5 557
Observer details:
046 Klet. Observer Z. Moravec. 0.57-m f/5.2 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.
Orbital elements:
1998 YR11
Epoch 1998 Dec. 13.0 TT = JDT 2451160.5 Williams
M 11.26522 (2000.0) P Q
n 0.39404113 Peri. 317.55443 +0.05861451 -0.60963357
a 1.8426450 Node 111.60358 +0.97772690 +0.19491951
e 0.4332098 Incl. 58.23774 -0.20153027 +0.76834452
P 2.50 H 18.4 G 0.15
From 23 observations 1998 Dec. 23-29.
Ephemeris:
1998 YR11 a,e,i = 1.84, 0.43, 58 q = 1.0444
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1998 12 23 11 14.06 -00 13.8 0.387 1.126 101.4 58.9 18.7
1998 12 28 11 26.06 +11 52.1 0.356 1.147 108.4 54.5 18.4
1999 01 02 11 39.20 +25 37.5 0.344 1.169 114.6 49.9 18.3
1999 01 07 11 53.75 +39 32.2 0.353 1.193 118.5 46.4 18.3
1999 01 12 12 10.06 +51 57.9 0.383 1.218 119.5 44.6 18.5
1999 01 17 12 28.62 +62 03.2 0.428 1.245 118.3 44.1 18.7
1999 01 22 12 50.12 +69 47.3 0.484 1.272 115.8 44.1 19.0
1999 01 27 13 15.6 +75 33.6 0.548 1.300 113.0 44.2 19.4
1999 02 01 13 46.8 +79 48.6 0.616 1.329 110.1 44.1 19.7
1999 02 06 14 26.0 +82 54.5 0.687 1.359 107.3 43.9 19.9
1999 02 11 15 17 +85 07.6 0.759 1.388 104.6 43.5 20.2
1999 02 16 16 24 +86 39.4 0.831 1.418 102.1 42.9 20.4
1999 02 21 17 50 +87 38.8 0.903 1.449 99.8 42.3 20.6
1999 02 26 19 34 +88 14.1 0.974 1.479 97.7 41.5 20.8
1999 03 03 21 28 +88 33.9 1.044 1.510 95.7 40.8 21.0
1999 03 08 23 30 +88 44.7 1.112 1.540 93.9 40.0 21.2
1999 03 13 01 45 +88 47.4 1.179 1.570 92.2 39.2 21.3
1999 03 18 04 00 +88 37.4 1.244 1.601 90.6 38.4 21.4
1999 03 23 05 50 +88 12.0 1.306 1.631 89.1 37.7 21.6
1999 03 28 07 08 +87 33.1 1.367 1.660 87.7 36.9 21.7
1999 04 02 08 03 +86 43.6 1.426 1.690 86.4 36.2 21.8
1999 04 07 08 44 +85 45.4 1.483 1.719 85.3 35.5 21.9
1999 04 12 09 15.8 +84 39.7 1.538 1.748 84.2 34.8 22.0
Gareth V. Williams (C) Copyright 1998 MPC M.P.E.C. 1998-Y39
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