MPEC 2021-H107 : 2021 HO2
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M.P.E.C. 2021-H107 Issued 2021 April 21, 11:41 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. 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
2021 HO2
Observations:
K21H02O* C2021 04 20.37571 13 30 39.34 +21 59 39.8 20.3 GVEH107U68
K21H02O C2021 04 20.37959 13 30 38.95 +22 02 52.2 20.3 GVEH107U68
K21H02O C2021 04 20.40611 13 30 36.81 +22 25 05.5 20.1 GVEH107U68
K21H02O C2021 04 20.40999 13 30 36.52 +22 28 17.4 20.1 GVEH107U68
K21H02O 1C2021 04 20.83167 13 31 58.71 +28 14 22.4 21.3 VVEH107033
K21H02O 1C2021 04 20.83214 13 31 58.70 +28 14 45.4 21.1 VVEH107033
K21H02O 1C2021 04 20.83260 13 31 58.68 +28 15 07.6 20.8 VVEH107033
K21H02O 1C2021 04 20.83307 13 31 58.72 +28 15 30.5 21.2 VVEH107033
K21H02O 1C2021 04 20.83353 13 31 58.69 +28 15 53.1 20.6 VVEH107033
K21H02O 1C2021 04 21.07041 13 31 48.53 +31 23 14.7 20.3 VVEH107033
K21H02O 1C2021 04 21.07087 13 31 48.53 +31 23 36.0 20.3 VVEH107033
K21H02O 1C2021 04 21.07133 13 31 48.51 +31 23 57.0 20.5 VVEH107033
K21H02O 1C2021 04 21.07179 13 31 48.52 +31 24 18.3 20.7 VVEH107033
K21H02O 1C2021 04 21.07225 13 31 48.50 +31 24 39.2 20.3 VVEH107033
K21H02O C2021 04 21.19374813 32 40.25 +33 01 01.4 20.5 GVEH107H01
K21H02O C2021 04 21.19799013 32 39.91 +33 04 18.5 20.4 GVEH107H01
K21H02O KC2021 04 21.24275013 32 38.11 +33 38 50.2 19.89GVEH107I52
K21H02O KC2021 04 21.24592513 32 37.76 +33 41 15.4 20.09GVEH107I52
K21H02O KC2021 04 21.24907813 32 37.46 +33 43 39.9 19.76GVEH107I52
K21H02O KC2021 04 21.25222413 32 37.09 +33 46 03.4 19.85GVEH107I52
Observer details:
033 Karl Schwarzschild Observatory, Tautenburg. Observers S. Melnikov, C.
Hoegner, U. Laux, F. Ludwig, B. Stecklum. Measurer B. Stecklum. 1.34-m
f/3 Schmidt + CCD.
H01 Magdalena Ridge Observatory, Socorro. Observers W. H. Ryan, E. V. Ryan.
Measurer W. H. Ryan. 2.4-m f/8.9 Ritchey-Chretien + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer D. Rankin. Measurers
E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer,
H. Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D.
Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos. 1.0-m reflector +
CCD.
U68 JPL SynTrack Robotic Telescope, Auberry. Observers N. Saini, C. Zhai, R.
Trahan, M. Zhan, M. Shao. 0.28-m f/2.2 Schmidt + CCD.
Orbital elements:
2021 HO2 Earth MOID = 0.0138 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 100.28715 (2000.0) P Q
n 1.06175876 Peri. 138.34298 +0.96524590 +0.24332496
a 0.9515950 Node 208.00559 -0.25901236 +0.93930596
e 0.1034961 Incl. 11.71726 +0.03482742 +0.24186211
P 0.93 H 27.90 G 0.15 U 6
Residuals in seconds of arc
210420 U68 (0.4+ 3.2+) 210420 033 0.3+ 0.5+ 210421 H01 0.0 0.3-
210420 U68 0.2- 0.2- 210420 033 0.0 0.5+ 210421 H01 0.1- 0.2-
210420 U68 0.3+ 0.0 210421 033 0.0 0.8- 210421 I52 0.0 0.0
210420 U68 (0.1+ 2.4-) 210421 033 0.0 0.6- 210421 I52 0.2- 0.1-
210420 033 0.0 1.0+ 210421 033 0.2- 0.6- 210421 I52 0.4+ 0.4+
210420 033 0.1- 0.9+ 210421 033 0.1+ 0.4- 210421 I52 0.1- 0.3+
210420 033 0.3- 0.6+ 210421 033 0.2- 0.6-
Ephemeris:
2021 HO2 a,e,i = 0.95, 0.10, 12 q = 0.8531
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 03 22 13 10 32.9 -66 22 03 0.1102 1.0446 113.1 61.3 25.4
...
2021 04 06 13 18 31.0 -60 40 52 0.05466 1.0334 125.5 52.0 23.6
...
2021 04 14 13 23 18.2 -42 56 11 0.02647 1.0251 146.3 32.8 21.4
...
2021 04 20 13 30 13.5 +16 39 40 0.01506 1.0179 151.5 28.1 20.1
2021 04 21 13 31 59.2 +30 31 39 0.01581 1.0166 137.4 42.0 20.6
2021 04 22 13 34 00.6 +42 28 54 0.01739 1.0152 125.1 54.1 21.1
...
2021 04 28 13 55 28.9 +76 35 03 0.03477 1.0069 89.3 88.7 23.7
...
2021 05 06 16 55 08.9 +87 59 57 0.06270 0.9947 75.3 101.2 25.6
...
2021 05 21 00 57 10.9 +83 13 32 0.1147 0.9693 65.0 108.8 27.2
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-H107
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