MPEC 2021-E15 : 2021 EF
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M.P.E.C. 2021-E15 Issued 2021 March 4, 10:08 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 EF
Observations:
K21E00F* C2021 03 03.36352012 04 41.24 +48 45 03.7 21.62GVEE015G96
K21E00F C2021 03 03.36876512 04 47.43 +48 45 10.7 21.00GVEE015G96
K21E00F C2021 03 03.37402612 04 53.61 +48 45 17.6 21.27GVEE015G96
K21E00F C2021 03 03.37927312 04 59.75 +48 45 24.2 21.21GVEE015G96
K21E00F KC2021 03 03.46339612 06 38.52 +48 46 41.3 20.94GVEE015V06
K21E00F KC2021 03 03.46695812 06 42.76 +48 46 43.7 21.11GVEE015V06
K21E00F KC2021 03 03.47052712 06 47.01 +48 46 46.3 21.08GVEE015V06
K21E00F 7C2021 03 03.53109 12 08 00.18 +48 47 09.2 21.5 GVEE015G37
K21E00F 7C2021 03 03.53131 12 08 00.46 +48 47 08.8 21.7 GVEE015G37
K21E00F 7C2021 03 03.53153 12 08 00.74 +48 47 09.1 21.2 GVEE015G37
K21E00F 7C2021 03 03.53174 12 08 00.99 +48 47 09.2 21.0 GVEE015G37
K21E00F 7C2021 03 03.53196 12 08 01.26 +48 47 09.4 21.0 GVEE015G37
K21E00F KC2021 03 04.21276112 22 27.87 +48 56 23.5 21.3 VuEE015H21
K21E00F KC2021 03 04.21625512 22 31.74 +48 56 26.5 21.6 VuEE015H21
K21E00F KC2021 03 04.22169012 22 37.75 +48 56 31.2 21.4 VuEE015H21
K21E00F KC2021 03 04.22479412 22 41.13 +48 56 33.8 21.3 VuEE015H21
Observer details:
G37 Lowell Discovery Telescope. Observers Q.-Z. Ye, S. Perez, A. Hayslip.
Measurer Q.-Z. Ye. 4.3-m reflector + CCD.
G96 Mt. Lemmon Survey. Observer D. C. Fuls. 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.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes. 0.76-m f/3.0
astrograph + CCD.
V06 Catalina Sky Survey-Kuiper. Observer 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. 1.55-m reflector +
1K CCD.
Orbital elements:
2021 EF Earth MOID = 0.0262 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Bell
M 321.17295 (2000.0) P Q
n 0.58255044 Peri. 1.20760 -0.88314561 -0.46501320
a 1.4198649 Node 150.82669 +0.42932044 -0.85428978
e 0.2849593 Incl. 7.28107 +0.18904441 -0.23227503
P 1.69 H 26.83 G 0.15 U 8
Residuals in seconds of arc
210303 G96 0.5- 0.7- 210303 V06 0.1+ 0.3+ 210304 H21 0.1- 0.2+
210303 G96 0.0- 0.4- 210303 G37 0.2- 0.1+ 210304 H21 0.0+ -0.0+
210303 G96 0.2+ 0.1- 210303 G37 0.0- 0.3- 210304 H21 0.2+ 0.1-
210303 G96 0.1+ 0.2+ 210303 G37 0.1+ 0.1- 210304 H21 0.1- 0.1-
210303 V06 0.2- 0.1- 210303 G37 0.1+ 0.1-
210303 V06 0.0+ 0.0- 210303 G37 0.0+ 0.0+
Ephemeris:
2021 EF a,e,i = 1.42, 0.28, 7 q = 1.0153
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 02 02 06 06 05.6 -14 10 57 0.07324 1.0308 126.6 50.1 23.1
...
2021 02 17 07 16 06.6 +08 35 04 0.03662 1.0161 139.2 39.5 21.3
...
2021 02 25 09 27 31.0 +37 33 15 0.03027 1.0156 148.1 31.0 20.6
...
2021 03 03 11 56 42.2 +48 34 50 0.03746 1.0187 136.3 42.2 21.4
2021 03 04 12 18 00.3 +48 54 13 0.03939 1.0195 134.4 44.0 21.5
2021 03 05 12 37 19.2 +48 57 51 0.04146 1.0203 132.7 45.6 21.7
...
2021 03 11 13 55 41.8 +46 44 50 0.05581 1.0272 126.1 51.4 22.5
...
2021 03 19 14 40 45.1 +42 46 40 0.07748 1.0406 123.8 52.7 23.3
...
2021 04 03 15 03 45.4 +36 56 05 0.1206 1.0772 127.4 47.5 24.2
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-E15
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