MPEC 2021-C54 : 2021 CH1
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M.P.E.C. 2021-C54 Issued 2021 February 7, 04:11 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 CH1
Observations:
K21C01H* C2021 02 05.19638508 09 59.62 +22 38 14.8 19.83GVEC054G96
K21C01H C2021 02 05.20195908 09 54.84 +22 39 56.1 19.95GVEC054G96
K21C01H C2021 02 05.20755008 09 50.02 +22 41 37.4 20.14GVEC054G96
K21C01H C2021 02 05.21312908 09 45.26 +22 43 18.0 19.68GVEC054G96
K21C01H KC2021 02 05.32353208 08 10.74 +23 16 01.9 19.87GVEC054I52
K21C01H KC2021 02 05.32454308 08 09.88 +23 16 19.6 20.01GVEC054I52
K21C01H KC2021 02 05.32555208 08 09.03 +23 16 36.9 19.97GVEC054I52
K21C01H KC2021 02 05.98514107 59 36.59 +26 17 25.4 20.2 GVEC054J95
K21C01H KC2021 02 05.99344907 59 30.08 +26 19 33.5 19.7 GVEC054J95
K21C01H KC2021 02 05.99809407 59 26.46 +26 20 45.3 19.8 GVEC054J95
K21C01H KC2021 02 06.13438707 57 50.89 +26 55 39.4 19.65GVEC054I52
K21C01H KC2021 02 06.13560207 57 50.01 +26 55 57.3 19.99GVEC054I52
K21C01H KC2021 02 06.13681507 57 49.06 +26 56 15.1 20.58GVEC054I52
K21C01H KC2021 02 07.10944507 46 28.85 +30 37 06.2 20.11GVEC054I52
K21C01H KC2021 02 07.11112307 46 27.69 +30 37 27.0 20.58GVEC054I52
K21C01H KC2021 02 07.11280107 46 26.52 +30 37 48.1 20.39GVEC054I52
Observer details:
G96 Mt. Lemmon Survey. Observer T. A. Pruyne. 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. 1.5-m reflector + 10K CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observers K. W. Wierzchos, H.
Groeller. 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.
J95 Great Shefford. Observer P. Birtwhistle. 0.41-m f/6.3 Schmidt-Cassegrain
+ CCD.
Orbital elements:
2021 CH1 Earth MOID = 0.0541 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 45.23593 (2000.0) P Q
n 1.51553687 Peri. 202.64946 +0.88638319 +0.29417568
a 0.7506285 Node 134.80846 -0.30846277 +0.95106974
e 0.5335458 Incl. 30.25562 -0.34521813 -0.09448295
P 0.65 H 24.6 G 0.15 U 8
Residuals in seconds of arc
210205 G96 0.1- 0.3- 210205 I52 0.1- 0.2- 210206 I52 0.3+ 0.7-
210205 G96 0.0 0.0 210205 J95 0.2+ 0.2- 210207 I52 0.0 0.1+
210205 G96 0.2- 0.1+ 210205 J95 0.1- 0.0 210207 I52 0.1- 0.2-
210205 G96 0.2+ 0.1- 210205 J95 0.0 0.4+ 210207 I52 0.3- 0.1-
210205 I52 0.2- 0.2+ 210206 I52 0.2- 0.4+
210205 I52 0.2- 0.2+ 210206 I52 0.5+ 0.1-
Ephemeris:
2021 CH1 a,e,i = 0.75, 0.53, 30 q = 0.3501
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 01 08 15 12 11.6 -60 11 21 0.2453 0.8724 56.5 109.9 25.4
...
2021 01 23 12 37 50.7 -54 36 30 0.1061 0.9862 88.0 85.8 22.7
...
2021 01 31 09 42 03.4 -15 58 15 0.05928 1.0340 144.5 33.6 19.9
...
2021 02 06 07 59 26.8 +26 21 47 0.08338 1.0642 158.8 19.6 20.3
2021 02 07 07 47 37.4 +30 14 28 0.09124 1.0688 153.7 24.1 20.7
2021 02 08 07 37 04.2 +33 25 22 0.09965 1.0733 149.2 28.0 21.0
...
2021 02 14 06 54 00.4 +43 57 15 0.1564 1.0973 131.4 42.4 22.4
...
2021 02 22 06 28 25.6 +48 56 48 0.2383 1.1223 118.4 50.8 23.6
...
2021 03 09 06 19 46.9 +51 52 12 0.3924 1.1482 103.3 57.3 24.9
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-C54
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