MPEC 2023-C70 : 2016 EC157
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M.P.E.C. 2023-C70 Issued 2023 February 10, 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
2016 EC157
Revision to MPEC 2016-E176
Additional Observations:
K16EF7C C2015 01 09.62235911 22 10.229+50 39 52.15 21.41GVEC070F51
K16EF7C C2015 01 09.63331611 22 03.126+50 40 18.84 21.29GVEC070F51
K16EF7C C2015 01 09.65527211 21 48.972+50 41 11.34 22.09GVEC070F51
K16EF7C C2015 02 12.39705107 13 44.724+42 25 17.10 21.98GVEC070F51
K16EF7C C2015 02 12.40921807 13 43.074+42 24 53.59 22.12GVEC070F51
K16EF7C C2015 02 12.42134407 13 41.471+42 24 30.49 22.88GVEC070F51
K16EF7C C2015 02 12.43353407 13 39.798+42 24 06.73 22.48GVEC070F51
K16EF7C KC2016 02 21.54714813 39 38.931-02 19 26.20 23.01GVEC070F51
K16EF7C C2016 04 05.35777011 04 46.397+02 13 04.78 20.53GVEC070F51
K16EF7C C2016 04 05.37162711 04 39.991+02 13 14.57 20.59GVEC070F51
K16EF7C C2016 04 05.39899111 04 27.344+02 13 33.94 20.55GVEC070F51
Observer details:
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, K. Chambers, T. Lowe, A.
Schultz, I. Smith. Measurers S. Chastel, J. Fairlamb, M. Huber, Y.
Ramanjooloo, R. Wainscoat, R. Weryk. 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
150109 F51 0.02- 0.05- 160405 F51 0.00- 0.00- MPO380419 -0.03 days
Orbital elements:
2016 EC157 Earth MOID = 0.0409 AU
Epoch 2023 Feb. 25.0 TT = JDT 2460000.5 Veres
M 168.63528 (2000.0) P Q
n 1.11403025 Peri. 329.28260 +0.91852606 +0.39515728
a 0.9215907 Node 7.47479 -0.34005840 +0.80598901
e 0.3523086 Incl. 5.59030 -0.20166843 +0.44071810
P 0.88 H 23.56 G 0.15 U 2
Residuals in seconds of arc
150109 F51 0.2+ 0.1+ 160311 F51 0.1+ 0.1+ 160328 691 1.1- 0.0
150109 F51 0.2- 0.1+ 160315 807 0.2+ 0.2+ 160329 807 0.0 0.0
150109 F51 0.2- 0.3- 160315 807 0.2- 0.1- 160329 807 0.2- 0.1-
150212 F51 0.1- 0.0 160315 807 0.2- 0.0 160329 807 0.7- 0.2+
150212 F51 0.1- 0.1- 160315 926 0.3+ 0.2+ 160330 807 0.1+ 0.1-
150212 F51 0.3+ 0.3+ 160315 926 0.4- 0.4+ 160330 807 0.3- 0.2-
150212 F51 0.1- 0.2+ 160315 926 0.4+ 0.2- 160330 807 0.2+ 0.1-
160221 F51 0.1- 0.1- 160327 G96 0.3+ 0.2+ 160330 807 0.1- 0.2-
160310 F51 0.1- 0.3+ 160327 G96 0.2+ 0.1+ 160405 F51 0.0 0.2+
160310 F51 0.0 0.0 160327 G96 0.3+ 0.1+ 160405 F51 0.1+ 0.1+
160310 F51 0.1- 0.1+ 160327 926 0.2- 0.1- 160405 F51 0.2+ 0.1+
160310 F51 0.0 0.2+ 160327 926 0.1- 0.3- 160410 I52 0.3- 0.0
160311 807 0.1- 0.4- 160327 926 0.4+ 0.1- 160410 I52 0.5+ 0.1-
160311 807 0.0 0.5- 160327 691 (1.0- 0.7-) 160410 I52 0.2+ 0.1+
160311 568 0.0 0.2+ 160327 691 (2.5- 0.3-) 160410 I52 (1.8+ 0.9+)
160311 568 0.1+ 0.1+ 160327 691 (1.4- 0.6-) 160430 291 0.8- 0.1+
160311 568 0.1+ 0.2+ 160328 691 (1.6- 0.4-) 160430 291 0.4+ 0.3-
160311 F51 0.1- 0.2+ 160328 691 (2.3- 0.2+) 160430 291 (0.2- 1.6-)
Ephemeris:
2016 EC157 a,e,i = 0.92, 0.35, 6 q = 0.5969
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 01 11 12 12 07.5 +19 25 22 0.3085 1.1439 113.9 51.8 23.2
...
2023 01 26 11 41 03.2 +24 31 42 0.2689 1.1920 135.8 35.2 22.5
...
2023 02 03 11 10 55.2 +27 38 33 0.2556 1.2114 148.8 24.9 22.2
...
2023 02 09 10 42 35.7 +29 37 51 0.2522 1.2232 157.4 18.0 21.9
2023 02 10 10 37 32.3 +29 54 15 0.2523 1.2249 158.5 17.1 21.9
2023 02 11 10 32 25.2 +30 09 26 0.2526 1.2266 159.5 16.4 21.9
...
2023 02 17 10 01 15.4 +31 11 36 0.2583 1.2352 161.1 15.0 21.9
...
2023 02 25 09 22 51.4 +31 14 52 0.2767 1.2428 153.1 21.1 22.3
...
2023 03 12 08 35 39.4 +28 41 52 0.3367 1.2455 132.4 36.1 23.1
A. U. Tomatic (C) Copyright 2023 MPC M.P.E.C. 2023-C70
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