MPEC 2021-E132 : 2021 EC4
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M.P.E.C. 2021-E132 Issued 2021 March 13, 06:31 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 EC4
Observations:
K21E04C* C2021 03 11.24173910 32 23.98 +23 37 16.1 20.53GVEE132G96
K21E04C C2021 03 11.24690310 32 20.71 +23 37 28.4 21.00GVEE132G96
K21E04C C2021 03 11.25719310 32 14.04 +23 37 54.9 21.09GVEE132G96
K21E04C KC2021 03 11.38836110 30 49.22 +23 43 19.5 21.07GVEE132I52
K21E04C KC2021 03 11.39004210 30 48.18 +23 43 23.1 21.00GVEE132I52
K21E04C KC2021 03 11.39172510 30 47.07 +23 43 27.4 20.22GVEE132I52
K21E04C 1C2021 03 12.83774 10 14 52.37 +24 42 41.6 21.5 VVEE132033
K21E04C 1C2021 03 12.83951 10 14 51.05 +24 42 45.9 21.7 VVEE132033
K21E04C 1C2021 03 12.84128 10 14 49.81 +24 42 49.7 21.9 VVEE132033
K21E04C 1C2021 03 12.84322 10 14 48.42 +24 42 54.8 21.8 VVEE132033
K21E04C IC2021 03 12.93330710 13 43.50 +24 46 39.3 21.6 GVEE132L01
K21E04C hC2021 03 12.93590710 13 41.60 +24 46 45.7 21.6 GVEE132L01
K21E04C hC2021 03 12.93872210 13 39.63 +24 46 52.6 21.5 GVEE132L01
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.
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.
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.
L01 Visnjan Observatory, Tican. Observer K. Korlevic. 1.0-m f/2.9 reflector
+ CCD.
Orbital elements:
2021 EC4 Earth MOID = 0.0020 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Alexandersen
M 185.44882 (2000.0) P Q
n 1.06345051 Peri. 304.11277 +0.58352814 +0.81208496
a 0.9505855 Node 1.59989 -0.69621966 +0.50254189
e 0.5062593 Incl. 7.39907 -0.41805873 +0.29659680
P 0.93 H 24.28 G 0.15 U 8
Residuals in seconds of arc
210311 G96 0.3- 0.3+ 210311 I52 0.0- 0.1+ 210312 L01 0.3- 0.4-
210311 G96 0.4+ 0.5- 210312 033 0.5+ 0.4+ 210312 L01 0.5- 0.2-
210311 G96 0.1- 0.0- 210312 033 0.3- 0.3+ 210312 L01 0.4+ 0.0-
210311 I52 0.3- 0.4+ 210312 033 0.0+ 0.3-
210311 I52 0.3+ 0.1- 210312 033 0.0+ 0.0+
Ephemeris:
2021 EC4 a,e,i = 0.95, 0.51, 7 q = 0.4693
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 02 11 12 24 09.2 +11 13 45 0.3727 1.2931 139.5 29.7 24.0
...
2021 02 26 11 56 15.1 +15 43 11 0.2372 1.2148 159.3 16.8 22.5
...
2021 03 06 11 16 46.2 +20 03 11 0.1781 1.1653 165.5 12.3 21.6
...
2021 03 12 10 24 19.2 +24 08 56 0.1436 1.1246 154.2 22.6 21.4
2021 03 13 10 12 57.5 +24 49 40 0.1389 1.1175 151.1 25.5 21.4
2021 03 14 10 00 46.1 +25 28 45 0.1347 1.1104 147.7 28.6 21.4
...
2021 03 20 08 31 42.6 +27 56 51 0.1179 1.0655 123.6 51.1 21.7
...
2021 03 28 06 22 18.3 +24 45 09 0.1216 1.0008 87.8 85.2 22.7
...
2021 04 12 03 57 57.8 +12 35 23 0.1862 0.8648 38.6 133.6 26.4
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-E132
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