MPEC 1998-Y19: 1998 XN17
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M.P.E.C. 1998-Y19 Issued 1998 Dec. 20, 17:31 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 XN17
Observations:
J98X17N* C1998 12 15.38307 06 13 23.92 +20 47 30.9 18.6 704
J98X17N C1998 12 15.39801 06 13 18.17 +20 48 28.6 18.9 704
J98X17N C1998 12 15.41283 06 13 12.44 +20 49 27.0 19.0 704
J98X17N C1998 12 15.42769 06 13 06.69 +20 50 23.0 19.2 704
J98X17N C1998 12 15.44258 06 13 00.94 +20 51 22.4 18.9 704
J98X17N C1998 12 17.29422 06 02 10.16 +22 47 51.1 19.1 704
J98X17N C1998 12 17.31745 06 02 01.52 +22 49 14.0 19.8 704
J98X17N C1998 12 17.34059 06 01 52.93 +22 50 37.3 19.5 704
J98X17N C1998 12 17.36372 06 01 44.31 +22 51 58.2 19.8 704
J98X17N C1998 12 18.85331 05 53 24.17 +24 16 44.0 587
J98X17N C1998 12 18.85655 05 53 22.95 +24 16 56.2 587
J98X17N C1998 12 18.88928 05 53 11.10 +24 18 43.3 046
J98X17N C1998 12 18.89042 05 53 10.76 +24 18 45.4 18.2 V 046
J98X17N C1998 12 18.89262 05 53 09.98 +24 18 52.9 046
J98X17N C1998 12 18.89450 05 53 09.28 +24 18 59.0 046
J98X17N C1998 12 18.89619 05 53 08.73 +24 19 04.5 046
J98X17N C1998 12 20.06484 05 46 45.17 +25 20 30.0 557
J98X17N IC1998 12 20.06602 05 46 44.83 +25 20 33.4 18.8 V 557
Observer details:
046 Klet. Observers J. Ticha, M. Tichy. Measurer M. Tichy. 0.57-m f/5.2
reflector + CCD.
557 Ondrejov. Observers P. Pravec, L. Sarounova, A. Kolar. 0.65-m f/3.6
reflector + CCD.
587 Sormano. Observer F. Manca. 0.5-m 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 XN17
Epoch 1998 Dec. 13.0 TT = JDT 2451160.5 Williams
M 108.87366 (2000.0) P Q
n 1.01256156 Peri. 226.20140 +0.66844900 +0.73238586
a 0.9821740 Node 86.21752 -0.63966540 +0.65498714
e 0.2150997 Incl. 7.46076 -0.37947874 +0.18601828
P 0.97 H 22.7 G 0.15
From 18 observations 1998 Dec. 15-20.
Ephemeris:
1998 XN17 a,e,i = 0.98, 0.22, 7 q = 0.7709
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1998 12 13 06 28.04 +18 01.4 0.106 1.086 163.3 15.1 18.8
1998 12 18 05 58.13 +23 29.4 0.117 1.101 176.3 3.3 18.6
1998 12 23 05 32.01 +27 36.6 0.132 1.114 171.6 7.4 19.1
1998 12 28 05 10.89 +30 32.6 0.150 1.126 161.7 15.9 19.7
1999 01 02 04 54.99 +32 35.0 0.170 1.138 153.2 22.9 20.2
1999 01 07 04 43.87 +34 00.1 0.193 1.148 145.9 28.7 20.7
1999 01 12 04 36.89 +35 00.0 0.217 1.158 139.6 33.4 21.1
1999 01 17 04 33.42 +35 43.3 0.243 1.166 134.0 37.4 21.5
1999 01 22 04 32.91 +36 15.5 0.270 1.173 129.0 40.7 21.8
1999 01 27 04 34.85 +36 40.4 0.298 1.179 124.6 43.4 22.1
1999 02 01 04 38.79 +37 00.0 0.326 1.184 120.5 45.8 22.4
Gareth V. Williams (C) Copyright 1998 MPC M.P.E.C. 1998-Y19
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