MPEC 2023-H138 : 2023 HC3
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M.P.E.C. 2023-H138 Issued 2023 April 22, 14:35 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets, routine data on comets and natural satellites,
and occasional editorial announcements. They are published
on behalf of Division F 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 https://www.minorplanetcenter.net/ ISSN 1523-6714
2023 HC3
Observations:
K23H03C*KC2023 04 20.11388 11 03 01.50 -36 45 23.2 18.3 GVEH138W94
K23H03C KC2023 04 20.12012 11 03 03.44 -36 44 30.3 19.3 GVEH138W94
K23H03C KC2023 04 20.12632 11 03 05.34 -36 43 37.9 18.6 GVEH138W94
K23H03C KC2023 04 20.29324 11 04 00.45 -36 19 41.8 18.7 GVEH138X10
K23H03C KC2023 04 20.29880 11 04 02.56 -36 18 55.3 19.0 GVEH138X10
K23H03C KC2023 04 20.30436 11 04 04.45 -36 18 10.4 19.0 GVEH138X10
K23H03C KB2023 04 20.76188 11 07 00.84 -35 17 23.0 20.0 VZEH138M49
K23H03C KB2023 04 20.77106 11 07 03.53 -35 16 12.2 20.1 VZEH138M49
K23H03C KB2023 04 20.78095 11 07 06.39 -35 14 54.9 18.8 VZEH138M49
K23H03C KB2023 04 20.78898 11 07 08.72 -35 13 52.3 19.8 VZEH138M49
K23H03C KB2023 04 20.79520 11 07 10.49 -35 13 03.7 19.6 VZEH138M49
K23H03C KB2023 04 20.80208 11 07 12.47 -35 12 10.0 20.0 VZEH138M49
K23H03C KC2023 04 21.21812311 09 28.350-34 19 28.78 19.81GVEH138I52
K23H03C KC2023 04 21.21950611 09 28.753-34 19 17.76 19.58GVEH138I52
K23H03C KC2023 04 21.22224811 09 29.524-34 18 56.45 19.61GVEH138I52
K23H03C KC2023 04 21.48875 11 10 55.74 -33 43 13.7 19.7 VqEH138E23
K23H03C KC2023 04 21.49583 11 10 57.62 -33 42 19.6 19.8 VqEH138E23
K23H03C KC2023 04 21.50111 11 10 59.04 -33 41 39.1 20.0 VqEH138E23
K23H03C KC2023 04 22.39794111 15 32.32 -31 52 10.1 19.9 GVEH138474
K23H03C KC2023 04 22.39913811 15 32.63 -31 52 01.8 20.0 GVEH138474
K23H03C KC2023 04 22.40153311 15 33.20 -31 51 44.9 19.9 GVEH138474
K23H03C KC2023 04 22.40273011 15 33.52 -31 51 36.7 20.0 GVEH138474
K23H03C KC2023 04 22.40392811 15 33.83 -31 51 28.2 19.7 GVEH138474
Observer details:
474 Mount John Observatory, Lake Tekapo. Observers A. C. Gilmore, P. M.
Kilmartin. Measurer P. M. Kilmartin. 1.0-m f/7.7 reflector + CCD.
E23 Arcadia. Observer A. Hidas. 0.35-m f/1.9 reflector + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer R. A. Kowalski.
Measurers E. J. Christensen, D. Fay, J. B. Fazekas, D. C. Fuls, A. R.
Gibbs, A. D. Grauer, H. Groeller, J. K. Hogan, R. A. Kowalski, S. M.
Larson, G. J. Leonard, D. Rankin, R. L. Seaman, A. Serrano, F. C. Shelly,
K. W. Wierzchos. 1.0-m prime focus + CCD.
M49 IAS Remote Observatory, Hakos. Observers D. Husar, M. Junius. Measurer
D. Husar. 0.25-m f/4.6 reflector + CMO.
W94 MAP, San Pedro de Atacama. Observers A. Maury, G. Attard. Measurers A.
Maury, G. Attard, D. Parrott, F. Signoret. 0.36-m f/1.9 Schmidt
astrograph + CCD.
X10 OVTLN, San Pedro de Atacama. Observers A. Maury, G. Attard, F. Signoret.
Measurers A. Maury, G. Attard, D. Parrott. 0.50-m f/4 reflector + CCD.
Orbital elements:
2023 HC3 Earth MOID = 0.0499 AU
Epoch 2023 Feb. 25.0 TT = JDT 2460000.5 Veres
M 45.03261 (2000.0) P Q
n 1.06330936 Peri. 194.63171 +0.16998093 -0.98358690
a 0.9506696 Node 245.61115 +0.91067654 +0.18025467
e 0.2502792 Incl. 3.81042 +0.37652983 +0.00806661
P 0.93 H 23.74 G 0.15 U 6
Residuals in seconds of arc
230420 W94 0.4+ 0.3- 230420 M49 0.1- 0.2- 230421 E23 0.1- 0.0
230420 W94 0.2+ 0.1- 230420 M49 0.1+ 0.2- 230421 E23 0.0 0.3+
230420 W94 0.3- 0.2- 230420 M49 0.0 0.2- 230422 474 0.1- 0.1+
230420 X10 0.7- 2.3+ 230420 M49 0.1+ 0.4- 230422 474 0.0 0.0
230420 X10 0.9+ 0.8+ 230421 I52 0.3- 0.2- 230422 474 0.2- 0.1+
230420 X10 0.2- 2.4- 230421 I52 0.0 0.1+ 230422 474 0.1+ 0.2-
230420 M49 0.4- 0.0 230421 I52 0.2+ 0.1+ 230422 474 0.3+ 0.1-
230420 M49 0.1- 0.5- 230421 E23 0.0 0.2-
Ephemeris:
2023 HC3 a,e,i = 0.95, 0.25, 4 q = 0.7127
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 03 23 01 22 58.4 -38 35 27 0.08198 0.9382 43.0 133.5 24.2
...
2023 04 07 06 03 13.3 -68 35 30 0.05029 1.0027 90.9 86.3 20.3
...
2023 04 15 10 16 03.9 -50 34 39 0.05585 1.0343 122.8 54.6 19.5
...
2023 04 21 11 08 17.2 -34 45 53 0.07020 1.0564 136.1 41.3 19.7
2023 04 22 11 13 34.5 -32 40 12 0.07317 1.0599 137.3 40.0 19.8
2023 04 23 11 18 19.7 -30 43 22 0.07627 1.0634 138.3 38.9 19.8
...
2023 04 29 11 39 34.4 -21 39 14 0.09710 1.0835 140.5 36.2 20.3
...
2023 05 07 11 58 20.1 -14 21 52 0.1291 1.1078 137.8 37.7 21.0
...
2023 05 22 12 24 40.2 -07 59 38 0.1974 1.1451 128.3 43.9 22.2
M. P. C. Staff (C) Copyright 2023 MPC M.P.E.C. 2023-H138
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