MPEC 2023-M159 : 2021 SK87
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M.P.E.C. 2023-M159 Issued 2023 June 28, 18:36 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 SK87
Observations:
K21S87K &C2021 09 22.17896021 33 13.53 -36 01 28.3 20.5 zWEM159W84
K21S87K ZC2021 09 30.29165221 05 34.76 -19 37 53.3 18.5 iWEM159I41
K21S87K* C2021 09 30.33765721 05 23.97 -19 16 01.1 18.10oVEM159T08
K21S87K C2021 09 30.34088421 05 20.84 -19 14 34.1 17.85oVEM159T08
K21S87K C2021 09 30.34641921 05 15.53 -19 12 03.9 18.47oVEM159T08
K21S87K C2021 09 30.35655221 05 05.79 -19 07 24.9 17.68oVEM159T08
K21S87K ZC2021 10 01.24007820 53 56.96 -10 20 45.3 17.8 gWEM159I41
K21S87K ZC2021 10 01.24042620 53 56.54 -10 20 29.0 WEM159I41
K21S87K ZC2021 10 02.22470320 30 50.91 +09 10 12.3 WEM159I41
K21S87K ZC2021 10 02.22505020 30 49.96 +09 10 48.5 WEM159I41
K21S87K ZC2021 10 03.22858819 28 48.93 +46 47 05.5 WEM159I41
K21S87K ZC2021 10 03.22893619 28 46.38 +46 47 55.0 WEM159I41
K21S87K S2021 10 03.67440918 22 01.64 +63 11 00.5 WEM159C51
K21S87K s2021 10 03.6744091 + 819.6548 - 2182.8139 + 6432.0847 EM159C51
Observer details:
C51 WISE. Observer . Measurer S. Deen.
I41 Palomar Mountain--ZTF. Observer . Measurer S. Deen. 1.2-m Oschin
Schmidt + CCD.
T08 ATLAS-MLO, Mauna Loa. Observers L. Denneau, J. Tonry, H. Weiland.
Measurers L. Denneau, J. Tonry, H. Weiland, A. Fitzsimmons, J. Robinson,
N. Erasmus. 0.5-m reflector + CCD.
W84 Cerro Tololo-DECam. Observers W. Cerny, A. Drlica-Wagner. Measurer S.
Deen. 4.0-m reflector + CCD.
Orbital elements:
2021 SK87 Earth MOID = 0.0026 AU
Epoch 2023 Feb. 25.0 TT = JDT 2460000.5 Bell
M 284.49203 (2000.0) P Q
n 0.58055676 Peri. 25.89264 +0.84497372 -0.53476049
a 1.4231137 Node 6.44879 +0.47901495 +0.75083963
e 0.3091321 Incl. 3.63230 +0.23783205 +0.38764813
P 1.70 H 26.34 G 0.15 U 8
Residuals in seconds of arc
210922 W84 0.2+ 0.6- 210930 T08 0.2+ 0.2- 211003 I41 0.2+ 1.5+
210930 I41 0.6+ 1.2- 211001 I41 0.6- 0.6+ 211003 I41 0.5+ 1.2+
210930 T08 0.0 0.6+ 211001 I41 0.3+ 0.1+ 211003 C51 0.1- 0.4-
210930 T08 0.2- 0.0 211002 I41 0.9+ 1.0-
210930 T08 0.2+ 0.8- 211002 I41 0.4+ 0.1+
Ephemeris:
2021 SK87 a,e,i = 1.42, 0.31, 4 q = 0.9832
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 05 29 01 46 44.9 +10 21 31 1.6228 1.0441 38.6 37.3 29.0
...
2023 06 13 02 48 14.0 +16 13 26 1.6116 1.0057 36.9 37.3 28.9
...
2023 06 21 03 22 29.7 +18 54 54 1.6154 0.9925 36.0 37.0 28.9
...
2023 06 27 03 48 45.0 +20 39 49 1.6222 0.9863 35.3 36.5 28.8
2023 06 28 03 53 09.9 +20 55 48 1.6237 0.9856 35.2 36.5 28.8
2023 06 29 03 57 35.3 +21 11 20 1.6252 0.9849 35.1 36.4 28.8
...
2023 07 05 04 24 18.2 +22 34 45 1.6360 0.9832 34.4 35.8 28.8
...
2023 07 13 05 00 10.8 +23 58 30 1.6542 0.9862 33.7 34.9 28.8
...
2023 07 28 06 06 50.9 +25 07 38 1.6963 1.0075 32.9 33.2 28.9
M. P. C. Staff (C) Copyright 2023 MPC M.P.E.C. 2023-M159
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