MPEC 2021-C182 : 2021 CS4
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M.P.E.C. 2021-C182 Issued 2021 February 10, 10:02 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 CS4
Observations:
K21C04S* C2021 02 08.40049912 07 55.79 -07 14 25.0 20.47GVEC182G96
K21C04S C2021 02 08.40562312 07 58.87 -07 14 05.4 20.36GVEC182G96
K21C04S C2021 02 08.41075012 08 01.92 -07 13 45.3 20.27GVEC182G96
K21C04S C2021 02 08.41586312 08 05.04 -07 13 25.3 20.28GVEC182G96
K21C04S KC2021 02 08.48883512 08 49.14 -07 08 37.6 20.48GVEC182I52
K21C04S KC2021 02 08.49136812 08 50.68 -07 08 27.7 20.90GVEC182I52
K21C04S !C2021 02 09.21599712 16 48.15 -06 17 42.0 20.5 GVEC182J04
K21C04S !C2021 02 09.21766412 16 49.27 -06 17 34.5 20.3 GVEC182J04
K21C04S !C2021 02 09.21932512 16 50.35 -06 17 27.0 20.9 GVEC182J04
K21C04S |C2021 02 09.32736 12 18 06.24 -06 08 16.3 20.6 VuEC182807
K21C04S |C2021 02 09.33086 12 18 08.58 -06 08 00.2 20.6 VuEC182807
K21C04S |C2021 02 09.33421 12 18 10.82 -06 07 45.0 20.4 VuEC182807
K21C04S KC2021 02 09.39939912 18 57.63 -06 04 00.6 20.75GVEC182I52
K21C04S KC2021 02 09.40038812 18 58.32 -06 03 56.0 20.61GVEC182I52
K21C04S KC2021 02 09.40137812 18 58.99 -06 03 51.7 20.41GVEC182I52
K21C04S KC2021 02 09.40236712 18 59.65 -06 03 47.5 19.90GVEC182I52
K21C04S 1C2021 02 10.01946 12 26 30.90 -05 14 47.6 20.9 VVEC182033
K21C04S 1C2021 02 10.02079 12 26 31.87 -05 14 41.0 20.2 VVEC182033
Observer details:
033 Karl Schwarzschild Observatory, Tautenburg. Observers S. Melnikov, C.
Hoegner, B. Stecklum. Measurer B. Stecklum. 1.34-m f/3 Schmidt + CCD.
807 Cerro Tololo Observatory, La Serena. Observers T. Linder, R. Holmes.
0.61-m f/6.5 astrograph + CCD.
G96 Mt. Lemmon Survey. Observer G. J. Leonard. 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 H. Groeller, 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.
J04 ESA Optical Ground Station, Tenerife. Observer D. Abreu. Measurers R.
Kresken, M. Micheli, D. Koschny, L. Conversi, A. Knofel, M. Busch, E.
Schwab. 1.0-m f/4.4 reflector + CCD.
Orbital elements:
2021 CS4 Earth MOID = 0.0445 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Bell
M 286.33851 (2000.0) P Q
n 0.62325416 Peri. 88.54304 -0.54045424 +0.82109635
a 1.3573523 Node 146.57135 -0.84137181 -0.52700227
e 0.4534415 Incl. 19.46792 -0.00164268 -0.21924734
P 1.58 H 23.38 G 0.15 U 8
Residuals in seconds of arc
210208 G96 0.2+ 0.4+ 210209 J04 0.0+ 0.1- 210209 I52 0.2- 0.2+
210208 G96 0.1+ 0.1+ 210209 J04 0.2+ 0.0- 210209 I52 0.2+ 0.3+
210208 G96 0.4- 0.1+ 210209 J04 0.1- 0.1+ 210209 I52 0.2+ 0.1+
210208 G96 0.2+ 0.0+ 210209 807 0.0+ 0.2- 210209 I52 0.0- 0.2-
210208 I52 0.1- 0.4- 210209 807 0.1- 0.1+ 210210 033 0.1+ 0.1-
210208 I52 0.1- 0.6- 210209 807 0.3- 0.1+ 210210 033 0.1- 0.1-
Ephemeris:
2021 CS4 a,e,i = 1.36, 0.45, 19 q = 0.7419
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 01 11 10 16 39.2 -13 19 18 0.4401 1.2921 126.0 38.0 23.7
...
2021 01 26 10 50 59.3 -13 23 38 0.2678 1.1842 133.3 37.3 22.4
...
2021 02 03 11 25 32.4 -11 13 24 0.1842 1.1248 135.7 37.7 21.5
...
2021 02 09 12 14 22.2 -06 32 49 0.1283 1.0798 134.1 41.0 20.7
2021 02 10 12 26 14.1 -05 15 29 0.1200 1.0723 133.0 42.3 20.6
2021 02 11 12 39 39.0 -03 45 22 0.1122 1.0648 131.6 43.9 20.5
...
2021 02 17 14 44 06.6 +10 32 45 0.08095 1.0198 110.9 64.8 20.3
...
2021 02 25 18 16 13.2 +25 02 35 0.1048 0.9610 71.1 103.0 22.2
...
2021 03 12 20 36 22.8 +23 32 14 0.2388 0.8589 49.8 118.0 24.6
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-C182
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