MPEC 1999-H24 : 1999 HY1
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M.P.E.C. 1999-H24 Issued 1999 Apr. 24, 14:50 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 HY1
Observations:
J99H01Y* C1999 04 20.16206 12 47 57.24 -27 10 37.3 17.9 704
J99H01Y C1999 04 20.17834 12 47 56.09 -27 09 22.8 17.6 704
J99H01Y C1999 04 20.19464 12 47 55.03 -27 08 07.7 16.9 704
J99H01Y C1999 04 20.21101 12 47 53.92 -27 06 52.8 17.1 704
J99H01Y FC1999 04 22.12426 12 46 03.60 -24 39 00.5 19.2 V 860
J99H01Y FC1999 04 22.12631 12 46 03.39 -24 38 51.6 860
J99H01Y C1999 04 22.18138 12 45 59.88 -24 34 29.2 19.3 V 859
J99H01Y C1999 04 22.18803 12 45 59.52 -24 33 57.3 19.1 V 859
J99H01Y C1999 04 22.19081 12 45 59.32 -24 33 43.2 19.2 V 859
J99H01Y C1999 04 22.23250 12 45 58.06 -24 30 45.3 711
J99H01Y C1999 04 22.23602 12 45 57.86 -24 30 28.3 711
J99H01Y C1999 04 22.23962 12 45 57.62 -24 30 11.3 711
J99H01Y C1999 04 22.53806 12 45 41.34 -24 06 22.4 18.5 R 428
J99H01Y C1999 04 22.54153 12 45 41.10 -24 06 06.1 18.5 R 428
J99H01Y C1999 04 23.50869 12 44 50.84 -22 49 12.4 17.7 R 426
J99H01Y C1999 04 23.51244 12 44 50.61 -22 48 54.0 17.7 R 426
J99H01Y C1999 04 23.52024 12 44 50.15 -22 48 16.8 17.6 R 426
J99H01Y C1999 04 23.90662 12 44 30.15 -22 17 42.0 17.0 R 046
J99H01Y C1999 04 23.90823 12 44 30.10 -22 17 34.6 046
J99H01Y C1999 04 23.90932 12 44 30.00 -22 17 29.7 046
J99H01Y C1999 04 23.91049 12 44 29.97 -22 17 23.7 046
J99H01Y C1999 04 23.91170 12 44 29.90 -22 17 18.0 046
Observer details:
046 Klet. Observers J. Ticha, M. Tichy. Measurer M. Tichy. 0.57-m f/5.2
reflector + CCD.
426 Woomera. Observer F. B. Zoltowski. 0.30-m f/3.3 Schmidt-Cassegrain + CCD.
428 Reedy Creek. Observer J. Broughton. 0.25-m f/6.3 Schmidt-Cassegrain
+ 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.
711 McDonald Observatory. Observer J. G. Ries. 0.76-m reflector + CCD.
859 Serra da Piedade. Observers C. Jacques, J. Amancio. 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 HY1
Epoch 1999 Apr. 12.0 TT = JDT 2451280.5 Williams
M 278.32181 (2000.0) P Q
n 0.57511045 Peri. 82.71439 +0.36646581 +0.86432289
a 1.4320842 Node 215.81888 -0.89691439 +0.42663513
e 0.1398414 Incl. 36.05662 +0.24748211 +0.26632389
P 1.71 H 18.9 G 0.15
From 22 observations 1999 Apr. 20-23.
Ephemeris:
1999 HY1 a,e,i = 1.43, 0.14, 36 q = 1.2318
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1999 04 22 12 46.18 -24 48.8 0.426 1.411 158.9 14.9 18.6
1999 04 27 12 42.14 -18 05.3 0.418 1.401 157.0 16.3 18.6
1999 05 02 12 39.34 -11 12.8 0.419 1.390 151.6 20.2 18.7
1999 05 07 12 37.84 -04 34.0 0.429 1.380 144.5 25.1 18.9
1999 05 12 12 37.67 +01 32.8 0.446 1.370 136.9 30.2 19.1
1999 05 17 12 38.79 +06 56.7 0.470 1.360 129.7 34.9 19.4
1999 05 22 12 41.13 +11 34.0 0.499 1.351 123.0 38.9 19.6
1999 05 27 12 44.58 +15 26.4 0.532 1.341 117.0 42.3 19.8
1999 06 01 12 49.00 +18 38.5 0.567 1.332 111.7 45.1 20.0
1999 06 06 12 54.28 +21 15.7 0.603 1.322 106.9 47.2 20.2
1999 06 11 13 00.33 +23 23.0 0.640 1.313 102.7 49.0 20.4
1999 06 16 13 07.08 +25 05.2 0.677 1.305 98.9 50.3 20.5
1999 06 21 13 14.45 +26 26.4 0.713 1.296 95.5 51.3 20.6
1999 06 26 13 22.37 +27 30.0 0.748 1.288 92.5 52.0 20.7
1999 07 01 13 30.78 +28 18.9 0.781 1.281 89.9 52.5 20.8
1999 07 11 13 48.93 +29 20.6 0.843 1.267 85.4 53.1 21.0
1999 07 21 14 08.74 +29 44.2 0.896 1.255 81.8 53.3 21.1
1999 07 31 14 30.12 +29 38.1 0.938 1.246 79.1 53.2 21.2
1999 08 10 14 53.06 +29 07.3 0.971 1.238 77.2 53.0 21.2
1999 08 20 15 17.71 +28 14.2 0.994 1.234 75.9 52.7 21.3
1999 08 30 15 44.17 +27 00.6 1.008 1.232 75.2 52.4 21.3
1999 09 09 16 12.59 +25 26.3 1.015 1.233 75.1 52.2 21.3
1999 09 19 16 43.14 +23 31.5 1.017 1.236 75.4 51.9 21.3
1999 09 29 17 15.83 +21 16.8 1.018 1.242 75.9 51.5 21.3
1999 10 09 17 50.60 +18 43.5 1.020 1.251 76.6 51.0 21.3
1999 10 19 18 27.20 +15 55.7 1.028 1.262 77.1 50.3 21.3
1999 10 29 19 05.14 +13 00.4 1.045 1.275 77.4 49.5 21.4
1999 11 08 19 43.79 +10 06.4 1.075 1.290 77.2 48.5 21.4
1999 11 18 20 22.43 +07 24.0 1.118 1.306 76.4 47.3 21.5
1999 11 28 21 00.37 +05 01.8 1.176 1.324 74.9 46.0 21.6
1999 12 08 21 37.09 +03 05.6 1.246 1.343 72.9 44.5 21.7
1999 12 18 22 12.25 +01 37.5 1.327 1.362 70.4 42.9 21.8
1999 12 28 22 45.72 +00 36.8 1.417 1.382 67.5 41.1 22.0
Gareth V. Williams (C) Copyright 1999 MPC M.P.E.C. 1999-H24
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