MPEC 1998-Y07: 1998 XE12
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M.P.E.C. 1998-Y07 Issued 1998 Dec. 17, 15:49 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 XE12
Observations:
J98X12E* C1998 12 14.12753 04 12 35.63 +38 38 59.3 19.5 704
J98X12E C1998 12 14.14987 04 12 28.35 +38 38 02.9 19.6 704
J98X12E C1998 12 14.17169 04 12 21.08 +38 37 06.1 19.8 704
J98X12E C1998 12 14.19354 04 12 13.99 +38 36 12.4 19.9 704
J98X12E C1998 12 14.21537 04 12 06.45 +38 35 20.8 19.9 704
J98X12E C1998 12 16.00751 04 03 05.49 +37 19 46.5 557
J98X12E C1998 12 16.00914 04 03 05.04 +37 19 42.5 19.0 V 557
J98X12E C1998 12 16.08892 04 02 44.14 +37 16 27.3 18.6 704
J98X12E C1998 12 16.09731 04 02 41.84 +37 16 05.1 19.0 704
J98X12E C1998 12 16.10558 04 02 39.34 +37 15 47.3 19.5 704
J98X12E C1998 12 16.11397 04 02 36.95 +37 15 25.0 18.6 704
J98X12E C1998 12 16.12236 04 02 34.57 +37 15 06.2 18.7 704
J98X12E C1998 12 16.44603 04 01 04.29 +37 01 39.4 18.8 V 402
J98X12E C1998 12 16.44743 04 01 03.99 +37 01 36.1 402
J98X12E C1998 12 16.44882 04 01 03.58 +37 01 32.7 402
J98X12E C1998 12 16.45021 04 01 03.09 +37 01 29.7 402
J98X12E C1998 12 17.46390 03 56 32.76 +36 19 54.8 18.9 V 402
J98X12E C1998 12 17.46529 03 56 32.40 +36 19 50.7 402
J98X12E C1998 12 17.46668 03 56 32.09 +36 19 47.9 402
J98X12E C1998 12 17.46807 03 56 31.67 +36 19 44.2 402
Observer details:
402 Dynic Astronomical Observatory. Observer A. Sugie. 0.60-m f/3.7 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 XE12
Epoch 1998 Dec. 13.0 TT = JDT 2451160.5 Williams
M 112.83890 (2000.0) P Q
n 1.19851506 Peri. 352.88950 +0.05995997 +0.97236372
a 0.8777558 Node 280.36168 -0.90416643 -0.04287354
e 0.7366122 Incl. 13.26064 -0.42295138 +0.22950088
P 0.82 H 19.1 G 0.15
From 20 observations 1998 Dec. 14-17.
Ephemeris:
1998 XE12 a,e,i = 0.88, 0.74, 13 q = 0.2312
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1998 12 13 04 18.84 +39 27.0 0.407 1.373 159.2 14.8 18.7
1998 12 18 03 54.28 +35 58.3 0.448 1.399 153.6 18.2 19.0
1998 12 23 03 36.90 +32 48.9 0.496 1.423 146.4 22.5 19.4
1998 12 28 03 25.01 +30 06.7 0.549 1.444 139.2 26.4 19.8
1999 01 02 03 17.25 +27 52.4 0.607 1.463 132.4 29.8 20.1
1999 01 07 03 12.59 +26 03.4 0.668 1.479 126.1 32.5 20.4
1999 01 12 03 10.30 +24 36.0 0.731 1.492 120.3 34.7 20.7
1999 01 17 03 09.86 +23 26.8 0.796 1.503 114.9 36.4 21.0
1999 01 22 03 10.91 +22 32.5 0.862 1.512 109.9 37.7 21.2
1999 01 27 03 13.14 +21 50.6 0.927 1.519 105.1 38.8 21.4
1999 02 01 03 16.35 +21 18.7 0.993 1.523 100.6 39.5 21.6
1999 02 06 03 20.36 +20 54.9 1.058 1.524 96.4 40.0 21.7
1999 02 11 03 25.05 +20 37.6 1.122 1.524 92.3 40.3 21.9
1999 02 16 03 30.34 +20 25.6 1.184 1.521 88.4 40.5 22.0
1999 02 21 03 36.15 +20 17.9 1.244 1.515 84.7 40.5 22.1
Gareth V. Williams (C) Copyright 1998 MPC M.P.E.C. 1998-Y07
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