MPEC 1999-H31 : 1999 HX2
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M.P.E.C. 1999-H31 Issued 1999 Apr. 26, 20:22 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 ISSN 1523-6714
1999 HX2
Observations:
J99H02X* C1999 04 22.31363 17 27 24.92 +08 27 38.6 17.6 704
J99H02X C1999 04 22.32502 17 27 25.71 +08 27 47.3 17.6 704
J99H02X C1999 04 22.33636 17 27 26.43 +08 27 58.2 17.4 704
J99H02X C1999 04 22.34771 17 27 27.26 +08 28 08.1 17.3 704
J99H02X C1999 04 22.35894 17 27 28.08 +08 28 17.8 17.3 704
J99H02X C1999 04 23.92275 17 29 23.05 +08 51 14.1 557
J99H02X C1999 04 23.92473 17 29 23.21 +08 51 15.9 557
J99H02X C1999 04 23.92671 17 29 23.35 +08 51 17.8 557
J99H02X C1999 04 23.93067 17 29 23.62 +08 51 21.0 17.2 V 557
J99H02X C1999 04 23.98829 17 29 27.73 +08 52 12.8 16.6 R 046
J99H02X C1999 04 23.99159 17 29 27.96 +08 52 15.6 046
J99H02X C1999 04 23.99465 17 29 28.17 +08 52 18.4 046
J99H02X C1999 04 23.99609 17 29 28.27 +08 52 19.6 046
J99H02X C1999 04 24.15628 17 29 40.04 +08 54 52.4 17.1 V 860
J99H02X C1999 04 24.16251 17 29 40.48 +08 54 58.2 16.6 V 860
J99H02X C1999 04 24.17346 17 29 41.22 +08 55 06.8 17.0 V 860
J99H02X C1999 04 24.19227 17 29 42.53 +08 55 23.8 16.7 V 860
J99H02X C1999 04 24.19602 17 29 42.76 +08 55 26.9 16.8 V 859
J99H02X C1999 04 24.20073 17 29 43.06 +08 55 31.5 16.5 V 859
J99H02X C1999 04 24.20424 17 29 43.32 +08 55 34.1 16.5 V 859
J99H02X C1999 04 24.20731 17 29 43.57 +08 55 36.9 16.3 V 859
J99H02X C1999 04 24.40727 17 29 57.96 +08 58 22.3 658
J99H02X C1999 04 24.42101 17 29 58.91 +08 58 34.3 658
J99H02X C1999 04 24.42936 17 29 59.48 +08 58 41.6 658
J99H02X C1999 04 24.75122 17 30 22.67 +09 03 27.5 327
J99H02X C1999 04 24.75580 17 30 22.98 +09 03 31.4 327
J99H02X C1999 04 24.76017 17 30 23.27 +09 03 35.4 16.8 327
J99H02X C1999 04 24.89115 17 30 33.02 +09 05 29.1 046
J99H02X C1999 04 24.89906 17 30 33.53 +09 05 35.5 046
J99H02X C1999 04 24.90015 17 30 33.56 +09 05 37.4 046
J99H02X C1999 04 24.90139 17 30 33.62 +09 05 37.3 046
J99H02X C1999 04 24.93380 17 30 36.00 +09 06 07.0 16.8 R 611
J99H02X C1999 04 24.93588 17 30 36.16 +09 06 08.8 611
J99H02X C1999 04 25.00348 17 30 40.86 +09 07 11.0 15.8 R 470
J99H02X C1999 04 25.01513 17 30 41.56 +09 07 21.8 16.0 R 470
J99H02X C1999 04 25.92466 17 31 46.33 +09 20 43.6 16.5 R 046
J99H02X C1999 04 25.92616 17 31 46.43 +09 20 44.6 046
J99H02X C1999 04 25.92722 17 31 46.54 +09 20 45.7 046
J99H02X C1999 04 25.92840 17 31 46.61 +09 20 46.1 046
J99H02X C1999 04 25.93086 17 31 46.80 +09 20 48.9 046
J99H02X C1999 04 26.01968 17 31 53.00 +09 22 09.0 104
J99H02X C1999 04 26.02257 17 31 53.18 +09 22 12.0 104
J99H02X C1999 04 26.02592 17 31 53.41 +09 22 14.5 16.8 V 104
J99H02X C1999 04 26.46378 17 32 23.90 +09 28 40.8 658
J99H02X C1999 04 26.46744 17 32 24.16 +09 28 44.0 658
J99H02X C1999 04 26.47429 17 32 24.63 +09 28 49.8 658
J99H02X C1999 04 26.68853 17 32 39.81 +09 32 12.2 16.9 R 426
J99H02X C1999 04 26.69415 17 32 40.16 +09 32 17.3 16.6 R 426
J99H02X C1999 04 26.69897 17 32 40.48 +09 32 21.5 16.8 R 426
Observer details:
046 Klet. Observers J. Ticha, M. Tichy. Measurer M. Tichy. 0.57-m f/5.2
reflector + CCD.
104 San Marcello Pistoiese. Observers L. Tesi, A. Boattini, M. Tombelli,
G. D'Abramo. Measurers G. Forti, L. Tesi, A. Boattini, M. Tombelli.
0.40-m f/5 reflector + CCD.
327 Peking Observatory, Xinglong Station. Observers J. Zhu, X. Y. Li. 0.6-m
Schmidt + CCD.
426 Woomera. Observer F. B. Zoltowski. 0.30-m f/3.3 Schmidt-Cassegrain + CCD.
470 Ceccano. Observer G. Masi. 0.28-m f/6.3 reflector + CCD.
557 Ondrejov. Observer P. Pravec. 0.65-m f/3.6 reflector + CCD.
611 Starkenburg. Observers M. Busch, R. Stoss. 0.45-m f/4.4 reflector + CCD.
658 Dominion Astrophysical Observatory. Observer D. D. Balam. 1.82-m
reflector + CCD.
704 Lincoln Laboratory ETS, New Mexico. Observers M. Blythe, F. Shelly,
M. Bezpalko, M. Elowitz. Measurers J. Stuart, H. Viggh, R. Sayer. 1.0-m
f/2.15 reflector + CCD.
859 Serra da Piedade. Observer C. Jacques. 0.3-m f/3.3 Schimdt-Cassegrain
+ CCD.
860 Valinhos. Observer P. R. Holvorcem. 0.20-m f/3.3 reflector + CCD.
Orbital elements:
1999 HX2
Epoch 1999 Apr. 12.0 TT = JDT 2451280.5 Williams
M 343.86836 (2000.0) P Q
n 0.16404652 Peri. 145.69496 +0.33662647 +0.92597779
a 3.3048979 Node 143.12531 -0.91516742 +0.36448305
e 0.5645924 Incl. 16.55891 -0.22170073 -0.09857602
P 6.01 H 14.7 G 0.15
From 49 observations 1999 Apr. 22-26.
Ephemeris:
1999 HX2 a,e,i = 3.30, 0.56, 17 q = 1.4390
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1999 04 22 17 27.02 +08 23.1 0.932 1.710 124.0 29.1 17.0
1999 04 27 17 33.02 +09 36.7 0.884 1.684 125.9 29.0 16.8
1999 05 02 17 38.57 +10 50.1 0.839 1.659 127.6 28.8 16.7
1999 05 07 17 43.62 +12 01.8 0.797 1.634 129.3 28.6 16.5
1999 05 12 17 48.15 +13 10.2 0.757 1.610 130.8 28.3 16.4
1999 05 17 17 52.13 +14 13.4 0.721 1.588 132.2 28.1 16.2
1999 05 22 17 55.55 +15 08.9 0.687 1.567 133.6 27.9 16.1
1999 05 27 17 58.43 +15 54.7 0.656 1.547 134.9 27.7 16.0
1999 06 01 18 00.81 +16 28.4 0.627 1.529 136.1 27.4 15.8
1999 06 06 18 02.72 +16 47.6 0.601 1.512 137.2 27.1 15.7
1999 06 11 18 04.23 +16 50.0 0.577 1.496 138.4 26.8 15.6
1999 06 16 18 05.42 +16 33.0 0.556 1.483 139.5 26.4 15.5
1999 06 21 18 06.45 +15 54.7 0.537 1.471 140.6 26.0 15.4
1999 06 26 18 07.47 +14 53.7 0.520 1.461 141.6 25.6 15.3
1999 07 01 18 08.64 +13 29.2 0.507 1.452 142.7 25.1 15.2
1999 07 06 18 10.10 +11 41.3 0.496 1.446 143.6 24.7 15.1
1999 07 11 18 12.00 +09 30.9 0.489 1.442 144.3 24.3 15.1
1999 07 16 18 14.51 +07 00.1 0.485 1.439 144.7 24.1 15.0
1999 07 21 18 17.78 +04 12.3 0.484 1.439 144.8 24.0 15.0
1999 07 26 18 21.89 +01 12.2 0.488 1.441 144.4 24.2 15.1
1999 07 31 18 26.89 -01 55.2 0.496 1.444 143.6 24.6 15.1
1999 08 05 18 32.80 -05 04.3 0.508 1.450 142.4 25.3 15.2
1999 08 10 18 39.62 -08 09.8 0.524 1.458 140.7 26.2 15.3
1999 08 15 18 47.31 -11 07.1 0.545 1.467 138.7 27.1 15.4
1999 08 20 18 55.85 -13 52.2 0.571 1.479 136.4 28.2 15.6
1999 08 25 19 05.13 -16 22.4 0.600 1.492 134.0 29.2 15.7
1999 08 30 19 15.04 -18 35.8 0.634 1.506 131.5 30.2 15.9
1999 09 04 19 25.49 -20 31.7 0.672 1.523 128.9 31.0 16.1
1999 09 09 19 36.38 -22 10.0 0.713 1.541 126.3 31.8 16.3
1999 09 14 19 47.61 -23 31.2 0.758 1.560 123.7 32.4 16.4
1999 09 19 19 59.09 -24 36.1 0.806 1.581 121.2 32.9 16.6
1999 09 24 20 10.73 -25 25.9 0.858 1.603 118.7 33.3 16.8
1999 09 29 20 22.45 -26 01.8 0.913 1.626 116.2 33.6 17.0
1999 10 04 20 34.16 -26 25.1 0.970 1.650 113.7 33.7 17.1
1999 10 09 20 45.83 -26 37.0 1.031 1.675 111.2 33.8 17.3
1999 10 14 20 57.42 -26 38.7 1.094 1.701 108.8 33.7 17.5
1999 10 19 21 08.89 -26 31.3 1.159 1.728 106.4 33.6 17.6
1999 10 24 21 20.21 -26 16.0 1.227 1.756 103.9 33.4 17.8
1999 10 29 21 31.36 -25 53.8 1.297 1.784 101.5 33.1 17.9
1999 11 03 21 42.32 -25 25.4 1.369 1.813 99.1 32.7 18.1
1999 11 08 21 53.11 -24 51.6 1.444 1.843 96.6 32.3 18.2
1999 11 13 22 03.71 -24 13.2 1.519 1.873 94.2 31.8 18.3
1999 11 18 22 14.13 -23 30.8 1.597 1.903 91.7 31.3 18.5
1999 11 23 22 24.37 -22 45.0 1.676 1.934 89.3 30.7 18.6
1999 11 28 22 34.43 -21 56.4 1.756 1.965 86.8 30.1 18.7
1999 12 03 22 44.32 -21 05.3 1.837 1.997 84.3 29.4 18.8
1999 12 08 22 54.05 -20 12.2 1.920 2.028 81.8 28.7 18.9
1999 12 13 23 03.63 -19 17.4 2.003 2.060 79.2 28.0 19.0
1999 12 18 23 13.07 -18 21.3 2.087 2.092 76.7 27.2 19.1
1999 12 23 23 22.37 -17 24.3 2.171 2.124 74.1 26.4 19.2
1999 12 28 23 31.55 -16 26.5 2.255 2.156 71.6 25.6 19.3
2000 01 02 23 40.60 -15 28.2 2.340 2.189 69.0 24.8 19.4
2000 01 07 23 49.54 -14 29.6 2.425 2.221 66.4 23.9 19.5
2000 01 12 23 58.38 -13 31.0 2.509 2.253 63.7 23.0 19.6
2000 01 17 00 07.13 -12 32.5 2.592 2.286 61.1 22.1 19.6
Gareth V. Williams (C) Copyright 1999 MPC M.P.E.C. 1999-H31
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- 1997-B01 (the full form)
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- B01 (the abbreviated form)
