MPEC 2001-M20 : 1999 XS16
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M.P.E.C. 2001-M20 Issued 2001 June 20, 17:38 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.
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
1999 XS16
Observations:
J99X16S FC2001 06 19.11156 21 52 39.93 -23 22 25.4 21.5 V 493
J99X16S FC2001 06 19.12233 21 52 39.87 -23 22 28.8 493
J99X16S FC2001 06 20.10919 21 52 25.06 -23 27 35.5 493
J99X16S FC2001 06 20.12135 21 52 24.81 -23 27 40.4 493
Observer details:
493 Calar Alto. Observers DANEOPS Team (M. Busch, A. Seib, F. Hormuth).
Measurers R. Stoss, A. Gnadig, A. Doppler. 1.52-m reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
010619 493 7.2+ 2.6+ 010620 493 8.2+ 2.1+ MPO 6262 +0.0010 day
Orbital elements:
1999 XS16
Epoch 2001 Apr. 1.0 TT = JDT 2452000.5 Spahr
M 55.33989 (2000.0) P Q
n 0.19540497 Peri. 99.17883 -0.98340255 -0.06111100
a 2.9411171 Node 77.45553 -0.01789793 -0.90430402
e 0.5360628 Incl. 10.07946 +0.18055215 -0.42249224
P 5.04 H 15.8 G 0.15 U 2
Residuals in seconds of arc
991115 704 0.0 0.1- 000103 704 1.0+ 0.2+ 000130 704 0.3+ 0.4+
991115 704 0.8+ 0.6- 000104 704 0.1+ 0.3- 000211 704 0.2+ 0.3-
991115 704 1.2- 0.0 000104 704 0.2+ 0.2- 000211 704 0.9- 0.1-
991115 704 0.4- 0.2- 000104 704 0.2+ 0.1- 000211 704 0.3- 0.3+
991202 691 0.2+ 0.2+ 000104 704 0.3+ 0.3- 000211 704 0.2- 0.5-
991202 691 0.2+ 0.1- 000104 704 0.1+ 0.3+ 000211 704 0.2- 0.8+
991202 691 0.1- 0.0 000106 704 0.1+ 0.2- 000226 413 0.4- 0.5-
991207 704 0.8- 0.2- 000106 704 0.5- 0.1- 000226 413 0.3- 0.4-
991207 704 0.1- 0.2+ 000106 704 0.5+ 0.2+ 000226 413 0.1- 0.5-
991207 704 0.8- 0.7- 000106 704 0.2+ 0.4+ 000422 118 0.1+ 0.1-
991207 704 0.2- 0.2- 000106 704 0.1- 0.6+ 000422 118 0.4+ 0.3+
991207 704 0.9- 0.1+ 000108 704 0.4- 0.3- 000810 413 0.4- 0.0
991208 704 0.2- 0.3+ 000108 704 0.1+ 0.5+ 000810 413 0.2+ 0.1-
991208 704 0.3- 0.3- 000108 704 0.1- 0.4+ 000810 413 0.2+ 0.1+
991208 704 0.4- 0.1+ 000108 704 0.2+ 0.1- 010619 493 1.0- 0.1+
000103 704 1.2+ 0.4- 000130 704 0.1- 0.2- 010619 493 0.5+ 0.0
000103 704 0.2+ 0.3- 000130 704 0.4+ 0.7+ 010620 493 0.6+ 0.6+
000103 704 0.6+ 1.1+ 000130 704 0.8+ 0.1- 010620 493 0.0 0.5-
000103 704 0.2+ 0.1- 000130 704 0.4+ 0.5+
Ephemeris:
1999 XS16 a,e,i = 2.94, 0.54, 10 q = 1.3645
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2001 06 10 21 53.87 -22 39.8 2.619 3.197 116.0 16.6 21.3
2001 06 20 21 52.44 -23 27.0 2.544 3.245 125.8 14.7 21.2
2001 06 30 21 48.69 -24 23.4 2.483 3.292 136.1 12.4 21.1
2001 07 10 21 42.76 -25 25.7 2.442 3.339 146.7 9.6 21.0
2001 07 20 21 34.97 -26 29.1 2.425 3.384 157.0 6.7 20.9
2001 07 30 21 25.87 -27 28.3 2.435 3.428 165.7 4.2 20.8
2001 08 09 21 16.23 -28 18.3 2.475 3.472 167.6 3.6 20.8
2001 08 19 21 06.85 -28 55.7 2.543 3.514 160.6 5.5 21.0
2001 08 29 20 58.53 -29 18.8 2.640 3.555 150.8 8.0 21.2
2001 09 08 20 51.87 -29 28.0 2.762 3.596 140.4 10.3 21.4
2001 09 18 20 47.22 -29 24.6 2.905 3.636 130.2 12.2 21.7
2001 09 28 20 44.74 -29 10.8 3.065 3.674 120.3 13.6 21.8
Timothy B. Spahr (C) Copyright 2001 MPC M.P.E.C. 2001-M20
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