MPEC 2021-E130 : 2021 EA4
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M.P.E.C. 2021-E130 Issued 2021 March 13, 00:18 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 EA4
Observations:
K21E04A* C2021 03 10.41944715 03 49.44 +31 25 21.8 21.16GVEE130G96
K21E04A C2021 03 10.42467715 03 51.54 +31 25 57.9 20.97GVEE130G96
K21E04A C2021 03 10.42990415 03 53.63 +31 26 34.0 20.89GVEE130G96
K21E04A C2021 03 10.43514515 03 55.72 +31 27 10.1 20.94GVEE130G96
K21E04A KC2021 03 10.49709815 04 20.35 +31 34 15.9 20.65GVEE130I52
K21E04A KC2021 03 10.49961715 04 21.42 +31 34 33.4 21.03GVEE130I52
K21E04A hC2021 03 10.96176515 07 35.23 +32 26 52.2 20.9 GVEE130L01
K21E04A hC2021 03 10.96479215 07 36.48 +32 27 12.1 21.1 GVEE130L01
K21E04A hC2021 03 10.96781315 07 37.68 +32 27 32.7 21.0 GVEE130L01
K21E04A KC2021 03 11.41737 15 10 43.86 +33 18 09.2 20.6 RqEE130H36
K21E04A KC2021 03 11.42642 15 10 47.43 +33 19 09.0 21.0 RqEE130H36
K21E04A 1C2021 03 12.17959 15 16 03.97 +34 41 49.8 21.9 VVEE130033
K21E04A 1C2021 03 12.18149 15 16 04.80 +34 42 01.8 22.1 VVEE130033
K21E04A KC2021 03 12.96300915 21 39.13 +36 05 37.2 21.2 GVEE130598
K21E04A KC2021 03 12.97212415 21 42.99 +36 06 35.5 19.9 GVEE130598
K21E04A KC2021 03 12.98061115 21 46.56 +36 07 29.8 21.1 GVEE130598
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.
598 Loiano. Observer A. Carbognani.
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.
H36 Sandlot Observatory, Scranton. Observer G. Hug. 0.56-m reflector + 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 EA4 Earth MOID = 0.2008 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 294.45690 (2000.0) P Q
n 0.51068088 Peri. 62.26282 -0.70313704 +0.68954982
a 1.5501355 Node 159.64681 -0.68695980 -0.72176508
e 0.3146989 Incl. 29.93273 +0.18353346 -0.05980150
P 1.93 H 22.2 G 0.15 U 9
Residuals in seconds of arc
210310 G96 0.2- 0.1+ 210310 L01 0.2+ 0.3+ 210312 033 1.0+ 0.6-
210310 G96 0.0 0.1+ 210310 L01 0.4+ 0.5- 210312 598 0.5- 0.2+
210310 G96 0.1+ 0.1+ 210310 L01 0.1- 0.6- 210312 598 0.1- 0.1+
210310 G96 0.1+ 0.0 210311 H36 0.1+ 0.8+ 210312 598 0.1- 0.1+
210310 I52 0.5- 0.1- 210311 H36 1.1- 0.1+
210310 I52 0.4+ 0.2+ 210312 033 0.4+ 0.3-
Ephemeris:
2021 EA4 a,e,i = 1.55, 0.31, 30 q = 1.0623
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 02 11 12 42 37.6 -12 59 37 0.3675 1.2428 126.9 39.4 22.1
...
2021 02 26 13 47 59.8 +06 44 29 0.2621 1.1828 132.4 38.1 21.2
...
2021 03 06 14 34 30.6 +22 35 47 0.2420 1.1541 127.1 43.3 21.1
...
2021 03 12 15 14 48.3 +34 22 22 0.2470 1.1345 119.1 49.9 21.3
2021 03 13 15 21 52.8 +36 09 39 0.2493 1.1315 117.7 51.1 21.3
2021 03 14 15 29 02.0 +37 52 49 0.2521 1.1284 116.2 52.2 21.4
...
2021 03 20 16 12 56.5 +46 36 02 0.2754 1.1114 107.8 58.5 21.7
...
2021 03 28 17 10 26.4 +54 06 08 0.3184 1.0923 98.7 64.6 22.2
...
2021 04 12 18 38 40.8 +60 01 26 0.4097 1.0685 87.8 69.6 22.9
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-E130
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