MPEC 1998-Y20: 1998 YW3
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M.P.E.C. 1998-Y20 Issued 1998 Dec. 20, 17:37 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 YW3
Observations:
J98Y03W* C1998 12 17.41940 07 37 32.51 +23 31 27.0 19.3 704
J98Y03W C1998 12 17.44213 07 37 28.96 +23 32 12.8 18.9 704
J98Y03W C1998 12 17.46480 07 37 25.08 +23 32 58.7 19.5 704
J98Y03W C1998 12 17.48756 07 37 21.52 +23 33 44.5 19.2 704
J98Y03W C1998 12 17.51080 07 37 17.57 +23 34 30.5 19.7 704
J98Y03W C1998 12 18.81473 07 33 45.68 +24 18 53.8 18.6 V 402
J98Y03W C1998 12 18.81612 07 33 45.52 +24 18 55.8 402
J98Y03W C1998 12 18.81751 07 33 45.15 +24 18 58.7 402
J98Y03W C1998 12 18.90198 07 33 32.20 +24 21 49.1 18.5 V 046
J98Y03W C1998 12 18.90328 07 33 31.98 +24 21 51.6 046
J98Y03W C1998 12 18.90485 07 33 31.82 +24 21 54.7 046
J98Y03W C1998 12 18.90725 07 33 31.42 +24 22 00.7 046
J98Y03W C1998 12 18.93890 07 33 25.95 +24 23 05.6 557
J98Y03W C1998 12 18.94053 07 33 25.71 +24 23 09.1 557
J98Y03W C1998 12 18.94216 07 33 25.33 +24 23 11.8 19.0 V 557
J98Y03W C1998 12 20.07528 07 30 12.48 +25 01 59.6 557
J98Y03W C1998 12 20.10308 07 30 07.50 +25 02 56.4 557
J98Y03W C1998 12 20.10541 07 30 07.12 +25 03 01.3 557
Observer details:
046 Klet. Observers J. Ticha, M. Tichy. Measurer M. Tichy. 0.57-m f/5.2
reflector + CCD.
402 Dynic Astronomical Observatory. Observer A. Sugie. 0.60-m f/3.7 reflector
+ CCD.
557 Ondrejov. Observers P. Pravec, L. Sarounova, A. Kolar. 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 YW3
Epoch 1998 Dec. 13.0 TT = JDT 2451160.5 Williams
M 143.03267 (2000.0) P Q
n 0.85161022 Peri. 195.79521 +0.31041696 +0.82566187
a 1.1023228 Node 94.24094 -0.81299638 +0.48740535
e 0.4569925 Incl. 28.18898 -0.49262378 -0.28411001
P 1.16 H 18.1 G 0.15
From 18 observations 1998 Dec. 17-20.
Ephemeris:
1998 YW3 a,e,i = 1.10, 0.46, 28 q = 0.5986
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1998 12 13 07 48.31 +21 04.9 0.641 1.556 145.6 20.9 19.1
1998 12 18 07 36.00 +23 51.2 0.623 1.567 153.9 16.0 18.9
1998 12 23 07 21.44 +26 42.3 0.611 1.577 162.2 11.0 18.7
1998 12 28 07 05.02 +29 30.1 0.608 1.585 169.4 6.6 18.5
1999 01 02 06 47.38 +32 05.9 0.613 1.592 170.9 5.6 18.5
1999 01 07 06 29.35 +34 22.7 0.627 1.597 165.1 9.1 18.7
1999 01 12 06 11.84 +36 16.5 0.648 1.601 157.3 13.7 19.0
1999 01 17 05 55.71 +37 46.8 0.677 1.604 149.4 18.2 19.2
1999 01 22 05 41.62 +38 55.9 0.712 1.606 141.9 22.2 19.5
1999 01 27 05 29.94 +39 47.8 0.752 1.606 134.9 25.8 19.7
1999 02 01 05 20.79 +40 26.6 0.795 1.605 128.3 28.8 19.9
1999 02 06 05 14.10 +40 56.0 0.842 1.603 122.3 31.3 20.1
1999 02 11 05 09.70 +41 18.9 0.890 1.599 116.7 33.5 20.3
1999 02 16 05 07.41 +41 37.7 0.940 1.594 111.5 35.2 20.4
1999 02 21 05 07.01 +41 53.7 0.990 1.588 106.7 36.6 20.6
1999 02 26 05 08.29 +42 08.1 1.040 1.580 102.2 37.8 20.7
1999 03 03 05 11.04 +42 21.4 1.089 1.571 98.0 38.7 20.8
1999 03 08 05 15.08 +42 33.9 1.137 1.561 94.0 39.4 20.9
1999 03 13 05 20.29 +42 45.5 1.183 1.549 90.3 39.9 21.0
1999 03 18 05 26.55 +42 56.4 1.228 1.536 86.7 40.3 21.1
1999 03 23 05 33.75 +43 06.2 1.270 1.522 83.4 40.6 21.1
1999 03 28 05 41.82 +43 14.9 1.310 1.506 80.2 40.8 21.2
1999 04 02 05 50.66 +43 22.1 1.347 1.489 77.2 40.9 21.2
1999 04 07 06 00.21 +43 27.4 1.381 1.470 74.3 40.9 21.2
1999 04 12 06 10.43 +43 30.5 1.412 1.450 71.6 41.0 21.3
1999 04 17 06 21.27 +43 31.1 1.439 1.429 69.0 41.0 21.3
1999 04 22 06 32.70 +43 28.8 1.463 1.406 66.5 40.9 21.3
1999 04 27 06 44.67 +43 23.1 1.483 1.382 64.2 40.9 21.3
1999 05 02 06 57.13 +43 13.7 1.499 1.357 61.9 40.9 21.2
Gareth V. Williams (C) Copyright 1998 MPC M.P.E.C. 1998-Y20
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