MPEC 2021-F11 : 2021 EZ4
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M.P.E.C. 2021-F11 Issued 2021 March 17, 11:42 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 EZ4
Observations:
K21E04Z* C2021 03 15.43841212 47 34.753+00 06 51.74 22.28wUEF011F51
K21E04Z C2021 03 15.45200812 47 33.800+00 06 31.32 21.51wUEF011F51
K21E04Z C2021 03 15.46572912 47 32.842+00 06 10.96 21.37wUEF011F51
K21E04Z 2C2021 03 15.98472612 47 17.331-00 07 01.49 21.3 GVEF011J04
K21E04Z 2C2021 03 15.99795712 47 16.488-00 07 22.10 21.6 GVEF011J04
K21E04Z 2C2021 03 16.01119112 47 15.617-00 07 42.32 21.6 GVEF011J04
K21E04Z KC2021 03 16.55631612 46 52.67 -00 19 56.1 22.0 GVEF011474
K21E04Z KC2021 03 16.56335312 46 52.15 -00 20 06.6 20.7 GVEF011474
K21E04Z 2C2021 03 16.98014612 46 38.814-00 32 58.53 21.5 GVEF011J04
K21E04Z 2C2021 03 16.98896012 46 38.180-00 33 12.83 21.7 GVEF011J04
K21E04Z 2C2021 03 16.99777712 46 37.570-00 33 27.20 21.4 GVEF011J04
Observer details:
474 Mount John Observatory, Lake Tekapo. Observers A. C. Gilmore, P. M.
Kilmartin. Measurer P. M. Kilmartin. 1.0-m f/7.7 reflector + CCD.
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, T. Lowe, A. Schultz, M.
Willman. Measurers K. Chambers, S. Chastel, T. de Boer, L. Denneau, J.
Fairlamb, H. Flewelling, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo,
R. Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien + CCD.
J04 ESA Optical Ground Station, Tenerife. Observer P. Ruiz. Measurers M.
Micheli, D. Koschny, L. Conversi, R. Kresken, A. Knofel, M. Busch, E.
Schwab. 1.0-m f/4.4 reflector + CCD.
Orbital elements:
2021 EZ4 Earth MOID = 0.0358 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Bell
M 225.00010 (2000.0) P Q
n 0.81962385 Peri. 246.32861 -0.33966300 +0.94054004
a 1.1308187 Node 3.82070 -0.84161352 -0.30218927
e 0.1067535 Incl. 3.15933 -0.41989968 -0.15513247
P 1.20 H 25.89 G 0.15 U 7
Residuals in seconds of arc
210315 F51 0.1+ 0.1+ 210315 J04 0.0+ 0.0- 210316 J04 0.4+ 0.2+
210315 F51 0.1- 0.1- 210316 J04 0.0- 0.0- 210316 J04 0.0- 0.0+
210315 F51 0.1- 0.1- 210316 474 0.1- 0.4- 210316 J04 0.1+ 0.2-
210315 J04 0.0- 0.4+ 210316 474 0.8- 0.1+
Ephemeris:
2021 EZ4 a,e,i = 1.13, 0.11, 3 q = 1.0101
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 02 15 12 37 54.7 +07 01 20 0.1857 1.1349 139.2 34.6 23.9
...
2021 03 02 12 48 40.6 +04 15 53 0.1331 1.1089 150.6 26.0 22.9
...
2021 03 10 12 49 31.0 +02 05 51 0.1094 1.0951 157.8 20.1 22.3
...
2021 03 16 12 47 13.2 -00 06 39 0.09370 1.0850 163.8 14.8 21.8
2021 03 17 12 46 34.3 -00 32 43 0.09126 1.0833 164.9 13.9 21.7
2021 03 18 12 45 50.6 -01 00 07 0.08887 1.0817 165.9 12.9 21.6
...
2021 03 24 12 39 45.6 -04 17 13 0.07564 1.0719 172.5 7.0 21.0
...
2021 04 01 12 26 32.2 -10 33 41 0.06082 1.0596 172.9 6.7 20.4
...
2021 04 16 11 39 02.2 -30 24 43 0.04247 1.0390 146.0 32.7 20.5
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-F11
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