MPEC 2023-H167 : 2021 EV2
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M.P.E.C. 2023-H167 Issued 2023 April 24, 14:05 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets, routine data on comets and natural satellites,
and occasional editorial announcements. 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 EV2
Revision to MPEC 2021-E92
Additional Observations:
K21E02V |C2023 02 26.14014 08 32 12.25 -08 08 31.9 22.2 GVEH167807
K21E02V |C2023 02 26.15123 08 32 11.31 -08 08 05.8 22.4 GVEH167807
K21E02V |C2023 02 26.16233 08 32 10.35 -08 07 40.0 22.5 GVEH167807
K21E02V 0C2023 03 26.36753208 15 28.318+13 01 27.31 23.09GVEH167T12
Observer details:
807 Cerro Tololo Observatory, La Serena. Observers T. Linder, R. Holmes, L.
Horn. 1.00-m f/10.0 astrograph + CCD.
T12 University of Hawaii 88-inch telescope, Maunakea. Observer D. J. Tholen.
2.24-m f/10.1 reflector + 2112 x 2112 pixels STA1600 10k CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
230226 807 28.2- 2.6- 230326 T12 21.5- 8.2- MPO740957 +0.00 days
Orbital elements:
2021 EV2 Earth MOID = 0.2131 AU
Epoch 2023 Feb. 25.0 TT = JDT 2460000.5 Veres
M 305.83353 (2000.0) P Q
n 0.47801215 Peri. 69.77561 -0.47157392 +0.87983619
a 1.6199816 Node 171.34513 -0.88159454 -0.47192595
e 0.3515749 Incl. 23.17221 +0.02022624 -0.05633975
P 2.06 H 22.43 G 0.15 U 0
Residuals in seconds of arc
210207 F51 0.0 0.2+ 210308 033 0.3+ 0.0 210316 204 0.5+ 0.1+
210207 F51 0.1+ 0.3+ 210309 J95 0.4- 0.2- 210316 204 0.0 0.3+
210207 F51 0.1- 0.1- 210309 J95 0.5- 0.6- 210319 G96 0.2- 0.1-
210207 F51 0.2+ 0.0 210309 J95 0.3- 0.5- 210319 G96 0.3- 0.1-
210217 F51 0.1+ 0.0 210309 858 0.0 0.4- 210319 G96 0.0 0.1+
210217 F51 0.2+ 0.1- 210309 858 0.5+ 0.0 210319 G96 0.1+ 0.1-
210217 F51 0.0 0.1- 210309 H21 0.1+ 0.2- 210330 I52 0.3- 0.3+
210217 F51 0.3- 0.3+ 210309 I52 0.1+ 0.2+ 210330 I52 0.8+ 0.1-
210307 G96 0.4+ 0.0 210309 I52 0.3- 0.7- 210330 I52 0.2+ 0.5-
210307 G96 0.3- 0.1+ 210309 I52 0.5- 0.0 210330 I52 0.1- 0.3+
210307 G96 0.1- 0.0 210309 H21 0.1+ 0.4- 210331 G96 0.4+ 0.6-
210307 G96 0.1- 0.1+ 210309 858 0.6+ 0.3- 210331 G96 0.1+ 0.2+
210307 I52 0.4- 0.4+ 210309 106 0.5+ 0.1- 210331 G96 1.2- 0.3-
210307 I52 0.3- 0.0 210309 106 0.2- 0.2- 210331 G96 0.2+ 0.0
210307 I52 0.0 0.0 210309 106 0.6- 0.5+ 210405 I52 0.1- 0.2-
210307 I52 0.1+ 0.3- 210313 D29 0.7- 0.1+ 210405 I52 0.2- 0.2-
210307 L01 0.0 0.3+ 210313 D29 (2.6+ 0.2-) 210405 I52 0.2- 0.2-
210307 L01 0.2+ 0.0 210313 D29 0.3- 0.4- 210411 G96 0.1- 0.2+
210307 L01 0.1+ 0.4+ 210313 D29 (0.9+ 1.1-) 210411 G96 0.3+ 0.3+
210308 H21 0.1- 0.1- 210315 711 0.5- 0.9- 210411 G96 0.2+ 0.0
210308 H21 0.0 0.1- 210315 711 0.1- 0.6- 210411 G96 0.4+ 0.2-
210308 H36 0.3- 0.5+ 210315 711 0.1- 0.2- 230226 807 0.0 0.2-
210308 H36 0.1+ 0.5- 210315 F52 0.1+ 0.3+ 230226 807 0.1+ 0.1-
210308 H36 0.9+ 0.1+ 210315 F52 0.0 0.1- 230226 807 0.1- 0.4-
210308 033 0.2+ 0.0 210315 F52 0.0 0.1+ 230326 T12 0.0 0.0
210308 033 0.3+ 0.1- 210315 F52 0.1- 0.1+
Ephemeris:
2021 EV2 a,e,i = 1.62, 0.35, 23 q = 1.0504
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 03 25 08 15 08.0 +12 00 00 0.5015 1.3168 119.2 41.4 23.1
...
2023 04 09 08 25 51.7 +22 27 20 0.5266 1.2445 104.8 51.1 23.4
...
2023 04 17 08 37 30.0 +27 13 03 0.5439 1.2083 98.3 55.3 23.5
...
2023 04 23 08 48 45.8 +30 23 33 0.5571 1.1825 94.0 58.0 23.6
2023 04 24 08 50 50.6 +30 53 20 0.5593 1.1784 93.3 58.4 23.6
2023 04 25 08 52 58.9 +31 22 34 0.5614 1.1743 92.6 58.8 23.6
...
2023 05 01 09 06 57.3 +34 06 32 0.5738 1.1507 89.0 61.1 23.7
...
2023 05 09 09 28 29.0 +37 15 23 0.5881 1.1221 84.9 63.6 23.8
...
2023 05 24 10 16 55.4 +41 39 08 0.6066 1.0799 79.3 67.1 23.9
A. U. Tomatic (C) Copyright 2023 MPC M.P.E.C. 2023-H167
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