MPEC 2021-C264 : 2017 EW2
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M.P.E.C. 2021-C264 Issued 2021 February 12, 21:01 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
2017 EW2
Revision to MPEC 2017-E63
Additional Observations:
K17E02W C2013 01 31.61222811 41 43.491+32 21 06.85 21.54GVEC264F51
K17E02W C2013 02 03.60286611 51 45.116+32 19 27.27 22.27GVEC264F51
K17E02W C2013 03 06.59119113 33 45.493+24 10 46.77 21.90GVEC264F51
K17E02W C2013 03 08.61301313 39 12.245+23 02 12.44 21.65GVEC264F51
K17E02W C2013 03 08.62401013 39 13.827+23 01 48.59 21.14GVEC264F51
K17E02W C2013 04 02.53601614 21 39.075+04 42 34.22 20.90GVEC264F51
K17E02W C2013 04 02.54738414 21 39.429+04 42 01.54 21.31GVEC264F51
K17E02W C2013 04 04.48183114 23 05.162+03 10 25.05 20.84GVEC264F51
K17E02W C2013 04 04.49298014 23 05.435+03 09 54.40 20.88GVEC264F51
K17E02W C2013 04 04.49371614 23 05.446+03 09 51.57 21.10GVEC264F51
K17E02W C2013 04 04.50429614 23 05.705+03 09 21.70 21.27GVEC264F51
K17E02W C2013 04 04.50490014 23 05.711+03 09 20.21 21.26GVEC264F51
K17E02W C2013 04 04.51453414 23 05.939+03 08 52.93 20.67GVEC264F51
K17E02W C2013 04 04.51513214 23 05.958+03 08 51.26 20.73GVEC264F51
K17E02W C2013 04 09.54246614 25 42.188-00 42 28.56 20.72GVEC264F51
K17E02W C2013 04 13.48152514 26 52.410-03 33 55.71 20.54GVEC264F51
K17E02W C2013 04 13.49540914 26 52.414-03 34 31.16 21.47GVEC264F51
K17E02W C2013 04 13.50929714 26 52.363-03 35 06.19 21.21GVEC264F51
K17E02W C2013 04 14.52992414 27 03.794-04 17 45.73 21.57GVEC264F51
K17E02W C2013 04 14.54063714 27 03.752-04 18 11.96 21.10GVEC264F51
K17E02W C2021 02 12.53327110 53 46.682+42 20 01.41 21.74wUEC264F51
K17E02W C2021 02 12.54295410 53 47.828+42 20 04.07 21.72wUEC264F51
K17E02W C2021 02 12.55262710 53 48.968+42 20 06.80 21.77wUEC264F51
K17E02W C2021 02 12.56237510 53 50.120+42 20 09.28 21.59wUEC264F51
Observer details:
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, K. Chambers, T. Lowe, A.
Schultz, M. Willman. Measurers S. Chastel, M. Huber, Y. Ramanjooloo, R.
Wainscoat, R. Weryk, K. Chambers, T. de Boer, L. Denneau, J. Fairlamb, H.
Flewelling, C.-C. Lin, E. Magnier. 1.8-m Ritchey-Chretien + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
130131 F51 0.27- 0.18- 210212 F51 0.36- 0.16- MPO405478 +0.10 days
Orbital elements:
2017 EW2 Earth MOID = 0.1873 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 337.81940 (2000.0) P Q
n 0.24588187 Peri. 133.44501 -0.99276790 -0.08952348
a 2.5233938 Node 41.61002 +0.04067485 -0.87768630
e 0.5392883 Incl. 6.91793 +0.11294886 -0.47079964
P 4.01 H 23.3 G 0.15 U 0
Residuals in seconds of arc
130131 F51 0.3+ 0.5- 170315 695 0.1+ 0.0 170402 691 (0.5- 2.0+)
130203 F51 0.3- 0.1+ 170317 F51 0.0 0.1+ 170403 G96 0.0 0.1+
130306 F51 0.1+ 0.2- 170317 F51 0.1+ 0.3- 170403 G96 0.1+ 0.0
130308 F51 0.1- 0.0 170317 F51 0.1- 0.2+ 170403 G96 0.1+ 0.2-
130308 F51 0.2+ 0.3- 170322 G96 0.1- 0.1+ 170403 G96 0.2+ 0.1-
130402 F51 0.1- 0.1+ 170322 G96 0.4+ 0.3- 170403 G96 0.2- 0.1+
130402 F51 0.1- 0.1- 170322 G96 0.2+ 0.2+ 170403 G96 0.1+ 0.1+
130404 F51 0.2- 0.3- 170322 G96 0.3- 0.6- 170403 G96 0.3+ 0.1-
130404 F51 0.1- 0.5+ 170326 691 0.1- 0.3- 170403 G96 0.0 0.2-
130404 F51 0.2- 0.2- 170326 691 0.3+ 0.1- 170404 G96 0.5+ 0.4+
130404 F51 0.0 0.2- 170327 G96 0.1+ 0.1+ 170404 G96 (1.5+ 0.3+)
130404 F51 0.1- 0.0 170327 G96 0.4+ 0.2+ 170404 G96 0.1+ 0.4+
130404 F51 0.1- 0.1- 170327 G96 0.2+ 0.0 170404 G96 0.2- 0.5-
130404 F51 0.0 0.0 170327 G96 0.4+ 0.2+ 170421 I52 0.0 0.5-
130409 F51 0.6+ 0.4- 170327 G96 0.1+ 0.1+ 170421 I52 0.3- 1.4-
130413 F51 0.5- 0.2+ 170327 G96 0.3- 0.4- 170421 I52 0.2+ 0.8-
130413 F51 0.1+ 0.1- 170327 I52 0.1+ 0.9+ 170421 I52 0.0 0.6-
130413 F51 0.1- 0.0 170327 I52 (0.1- 2.2+) 170426 F51 0.0 0.1-
130414 F51 0.0 0.1+ 170327 G96 0.1+ 0.3+ 170426 F51 0.0 0.1+
130414 F51 0.0 0.4+ 170327 I52 0.3+ 1.2+ 170426 F51 0.0 0.1-
170306 F51 0.1+ 0.2+ 170327 I52 0.4+ 0.2+ 170504 291 0.2+ 0.1+
170306 F51 0.1- 0.2+ 170327 G96 0.3- 0.7+ 170504 291 0.2+ 0.2+
170306 F51 0.2- 0.3+ 170327 I52 0.3- 0.0 170504 291 0.3+ 0.1-
170307 291 0.0 0.2+ 170327 I52 0.1- 0.2- 170506 H21 0.5+ 0.4+
170307 291 0.0 0.2+ 170327 I52 0.4+ 0.1+ 170506 H21 0.5+ 0.0
170307 291 0.0 0.2+ 170327 I52 0.3+ 0.2+ 170506 H21 0.2+ 0.5+
170309 291 0.0 0.3+ 170327 I52 0.4+ 0.0 210212 F51 0.0 0.1-
170309 291 0.1+ 0.4+ 170327 I52 0.8+ 0.2+ 210212 F51 0.0 0.1-
170309 291 0.5+ 0.3+ 170327 I52 1.0- 0.0 210212 F51 0.0 0.0
170315 695 0.3- 0.4+ 170402 691 0.7- 0.7- 210212 F51 0.1- 0.0
170315 695 0.4+ 0.3- 170402 691 0.5- 0.2+
Ephemeris:
2017 EW2 a,e,i = 2.52, 0.54, 7 q = 1.1626
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 01 13 09 53 00.9 +36 12 37 0.4324 1.3674 147.3 22.9 23.2
...
2021 01 28 10 21 07.2 +39 43 28 0.3386 1.2883 149.6 22.7 22.6
...
2021 02 05 10 37 24.8 +41 19 40 0.2997 1.2523 149.0 23.9 22.3
...
2021 02 11 10 50 22.2 +42 10 54 0.2749 1.2286 147.9 25.3 22.1
2021 02 12 10 52 35.6 +42 16 57 0.2712 1.2249 147.7 25.5 22.1
2021 02 13 10 54 50.2 +42 22 09 0.2675 1.2214 147.5 25.8 22.0
...
2021 02 19 11 08 41.5 +42 33 18 0.2473 1.2020 146.3 27.2 21.9
...
2021 02 27 11 28 02.0 +41 42 18 0.2251 1.1819 145.1 28.7 21.7
...
2021 03 14 12 04 00.7 +35 46 19 0.1971 1.1632 146.2 28.4 21.4
A. U. Tomatic (C) Copyright 2021 MPC M.P.E.C. 2021-C264
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