MPEC 2021-C238 : 2021 CF6
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M.P.E.C. 2021-C238 Issued 2021 February 12, 10:14 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 CF6
Observations:
K21C06F* C2021 02 09.17211006 00 58.71 -07 39 36.6 21.58GVEC238G96
K21C06F C2021 02 09.17773406 00 58.13 -07 39 36.4 21.20GVEC238G96
K21C06F C2021 02 09.18335306 00 57.60 -07 39 36.5 21.59GVEC238G96
K21C06F C2021 02 09.18898006 00 56.98 -07 39 36.8 21.68GVEC238G96
K21C06F KC2021 02 09.27807406 00 47.91 -07 39 41.7 21.10GVEC238V06
K21C06F KC2021 02 09.28124106 00 47.60 -07 39 42.1 21.18GVEC238V06
K21C06F KC2021 02 09.28440906 00 47.29 -07 39 42.1 21.16GVEC238V06
K21C06F KC2021 02 09.28757806 00 46.98 -07 39 42.4 21.36GVEC238V06
K21C06F |C2021 02 10.10822 05 59 41.77 -07 39 21.5 21.5 GVEC238807
K21C06F |C2021 02 10.11112 05 59 41.49 -07 39 21.6 21.5 GVEC238807
K21C06F |C2021 02 10.11441 05 59 41.15 -07 39 22.0 21.3 GVEC238807
K21C06F 2C2021 02 10.85556205 58 43.461-07 40 48.98 20.8 GVEC238J04
K21C06F 2C2021 02 10.86437005 58 42.526-07 40 49.52 20.9 GVEC238J04
K21C06F KC2021 02 11.20981105 58 12.27 -07 40 58.3 21.17GVEC238I52
K21C06F KC2021 02 11.21920605 58 11.31 -07 40 58.9 20.62GVEC238I52
K21C06F KC2021 02 11.23798805 58 09.51 -07 40 58.3 20.44GVEC238I52
K21C06F KC2021 02 12.12843105 56 58.82 -07 40 54.8 20.89GVEC238I52
K21C06F KC2021 02 12.13178105 56 58.62 -07 40 54.7 20.82GVEC238I52
K21C06F KC2021 02 12.13513305 56 58.27 -07 40 54.9 21.07GVEC238I52
K21C06F KC2021 02 12.13848505 56 57.75 -07 40 54.9 20.90GVEC238I52
Observer details:
807 Cerro Tololo Observatory, La Serena. Observers T. Linder, R. Holmes.
1.00-m f/10.0 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. 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. 1.0-m
reflector + CCD.
J04 ESA Optical Ground Station, Tenerife. Observer D. Abreu. Measurers M.
Micheli, D. Koschny, L. Conversi, R. Kresken, A. Knofel, M. Busch, E.
Schwab. 1.0-m f/4.4 reflector + CCD.
V06 Catalina Sky Survey-Kuiper. 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. 1.55-m reflector +
1K CCD.
Orbital elements:
2021 CF6 Earth MOID = 0.0084 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Bell
M 330.86412 (2000.0) P Q
n 0.33038227 Peri. 6.73934 -0.99670588 -0.07758456
a 2.0723267 Node 168.72914 +0.06762006 -0.95580832
e 0.5263148 Incl. 6.94202 +0.04477639 -0.28356849
P 2.98 H 23.8 G 0.15 U 8
Residuals in seconds of arc
210209 G96 0.2- 0.7- 210209 V06 0.1+ 0.3- 210211 I52 0.2- 0.3-
210209 G96 0.2- 0.1- 210210 807 0.4- 0.4+ 210211 I52 2.1+ 0.1+
210209 G96 0.6+ 0.2+ 210210 807 0.0 0.4+ 210212 I52 1.3- 0.0
210209 G96 0.0 0.3+ 210210 807 0.0 0.1+ 210212 I52 1.0+ 0.0
210209 V06 0.0 0.1+ 210210 J04 0.4- 0.2+ 210212 I52 1.2+ 0.2-
210209 V06 0.0 0.2- 210210 J04 0.4- 0.0 210212 I52 1.2- 0.2-
210209 V06 0.0 0.1- 210211 I52 0.6- 0.3+
Ephemeris:
2021 CF6 a,e,i = 2.07, 0.53, 7 q = 0.9816
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 01 13 06 37 05.8 -04 26 22 0.2741 1.2286 150.0 23.6 22.5
...
2021 01 28 06 17 20.9 -06 50 18 0.1945 1.1337 136.5 36.8 22.0
...
2021 02 05 06 06 34.5 -07 29 51 0.1569 1.0894 127.9 45.5 21.7
...
2021 02 11 05 58 30.6 -07 40 13 0.1295 1.0601 121.3 52.7 21.4
2021 02 12 05 57 08.7 -07 40 12 0.1250 1.0556 120.2 53.9 21.4
2021 02 13 05 55 46.0 -07 39 40 0.1205 1.0512 119.1 55.2 21.3
...
2021 02 19 05 46 47.9 -07 24 30 0.09323 1.0272 112.1 63.1 20.9
...
2021 02 27 05 27 49.8 -06 14 25 0.05643 1.0024 100.9 76.0 20.2
...
2021 03 14 20 24 44.3 +15 42 14 0.01960 0.9818 50.6 128.5 20.8
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-C238
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