MPEC 2020-A131 : 2017 KS31
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M.P.E.C. 2020-A131 Issued 2020 January 15, 15:00 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 KS31
Revision to MPEC 2017-K81
Additional Observations:
K17K31S KC2019 11 27.47687707 10 34.657+28 55 04.88 23.97GVEA131T12
K17K31S C2019 11 28.52543907 09 23.644+29 05 23.70 23.06GVEA131T12
Observer details:
T12 Mauna Kea-UH/Tholen NEO Follow-Up (2.24-m). Observer D. Hung. Measurer D.
J. Tholen. 2.24-m f/10.1 reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
191127 T12 10.2+ 0.7+ 191128 T12 10.4+ 0.7+ MPO428357 +0.01 days
Orbital elements:
2017 KS31 Earth MOID = 0.1191 AU
Epoch 2020 May 31.0 TT = JDT 2459000.5 Veres
M 196.41408 (2000.0) P Q
n 0.53734432 Peri. 259.29464 +0.70691461 +0.70042620
a 1.4984225 Node 56.15692 -0.59380402 +0.66326919
e 0.2948824 Incl. 6.80129 -0.38427661 +0.26358513
P 1.83 H 21.7 G 0.15 U 0
Residuals in seconds of arc
170526 F51 0.1- 0.0 170528 T12 0.0 0.0 171018 F51 0.0 0.1+
170526 F51 0.0 0.1+ 170528 T12 0.0 0.0 171018 F51 0.0 0.2+
170526 F51 0.0 0.1+ 170617 474 0.0 0.2- 171018 F51 0.0 0.3+
170527 J04 0.0 0.3+ 170617 474 0.0 0.1- 171024 G96 0.1+ 0.2-
170527 J04 0.5+ 0.8+ 170617 474 0.0 0.0 171024 G96 0.0 0.1+
170527 H01 0.1- 0.1- 170617 474 0.1- 0.3- 171024 G96 0.2+ 0.0
170527 H01 0.0 0.0 170820 807 0.3+ 0.3- 171024 G96 0.0 0.4-
170527 H01 0.0 0.0 170820 807 0.0 0.1- 171117 807 0.3- 0.8-
170527 H01 0.1- 0.1- 170820 807 0.4- 0.0 171117 807 0.5- 1.4-
170527 568 0.0 0.0 170915 691 0.1- 0.1+ 171117 807 0.2- 0.4-
170527 568 0.0 0.0 170915 691 0.5- 0.2- 171121 F51 0.1- 0.1-
170527 568 0.0 0.0 171016 G96 0.1- 0.2- 171121 F51 0.2+ 0.1+
170528 807 0.1- 0.1+ 171016 G96 0.2+ 0.2- 171121 F51 0.2+ 0.0
170528 807 0.0 0.1+ 171016 G96 0.1+ 0.3- 191127 T12 0.0 0.0
170528 807 0.5- 0.4+ 171016 G96 0.4+ 0.1+ 191128 T12 0.0 0.0
Ephemeris:
2017 KS31 a,e,i = 1.50, 0.29, 7 q = 1.0566
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2019 12 16 06 40 32.8 +31 46 44 0.7628 1.7270 162.5 9.9 22.9
...
2019 12 31 06 08 59.9 +33 06 47 0.7968 1.7708 168.2 6.5 22.9
...
2020 01 08 05 54 01.0 +33 18 53 0.8380 1.7922 159.4 11.1 23.3
...
2020 01 14 05 44 49.3 +33 16 52 0.8785 1.8073 152.1 14.7 23.5
2020 01 15 05 43 29.3 +33 15 49 0.8860 1.8097 150.9 15.3 23.6
2020 01 16 05 42 12.9 +33 14 36 0.8937 1.8122 149.7 15.9 23.6
...
2020 01 22 05 35 50.8 +33 04 22 0.9438 1.8262 142.6 19.1 23.9
...
2020 01 30 05 30 47.2 +32 45 57 1.0199 1.8438 133.7 22.7 24.2
...
2020 02 14 05 30 54.8 +32 08 40 1.1840 1.8727 118.9 27.5 24.7
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