MPEC 2021-S20 : 2021 SF
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M.P.E.C. 2021-S20 Issued 2021 September 17, 11:51 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
2021 SF
Observations:
K21S00F* C2021 09 16.15409022 02 54.96 +15 55 25.2 VES020G96
K21S00F C2021 09 16.16166522 03 02.44 +15 52 24.9 18.61GVES020G96
K21S00F C2021 09 16.16739822 03 08.04 +15 50 09.8 18.70GVES020G96
K21S00F C2021 09 16.17312222 03 13.65 +15 47 54.3 19.04GVES020G96
K21S00F C2021 09 16.32235722 05 37.11 +14 49 03.8 VES020G96
K21S00F C2021 09 16.32249122 05 37.26 +14 49 00.0 VES020G96
K21S00F C2021 09 16.32262722 05 37.40 +14 48 57.2 18.67GVES020G96
K21S00F C2021 09 16.32276022 05 37.51 +14 48 54.0 18.69GVES020G96
K21S00F C2021 09 16.36577222 06 19.05 +14 31 50.9 18.57GVES020G96
K21S00F C2021 09 16.36590622 06 19.17 +14 31 47.7 18.61GVES020G96
K21S00F C2021 09 16.36604122 06 19.30 +14 31 44.4 18.72GVES020G96
K21S00F C2021 09 16.36617722 06 19.44 +14 31 41.3 18.51GVES020G96
K21S00F KC2021 09 16.84366222 14 26.05 +11 23 27.0 18.8 GXES020958
K21S00F KC2021 09 16.84974 22 14 28.82 +11 20 57.7 18.0 RoES020K88
K21S00F KC2021 09 16.85082322 14 32.78 +11 20 38.7 18.8 GXES020958
K21S00F KC2021 09 16.85229 22 14 31.25 +11 19 57.4 18.1 RoES020K88
K21S00F KC2021 09 16.85798422 14 39.43 +11 17 51.8 19.2 GXES020958
K21S00F KC2021 09 16.88489622 15 04.10 +11 07 02.7 18.5 GVES020J95
K21S00F KC2021 09 16.88748622 15 06.49 +11 06 02.2 18.3 GVES020J95
K21S00F KC2021 09 16.88930422 15 08.19 +11 05 19.6 18.9 GVES020J95
K21S00F KC2021 09 16.93253222 15 48.23 +10 48 25.7 18.7 GVES020Z80
K21S00F KC2021 09 16.94040722 15 55.53 +10 45 21.3 19.5 GVES020Z80
K21S00F KC2021 09 16.94840622 16 02.94 +10 42 13.1 18.5 GVES020Z80
K21S00F KC2021 09 17.15879322 19 30.00 +09 20 53.3 18.5 VqES020858
K21S00F KC2021 09 17.16111522 19 32.11 +09 19 59.2 18.5 VqES020858
K21S00F KC2021 09 17.16349022 19 34.24 +09 19 04.2 18.6 VqES020858
K21S00F KC2021 09 17.18297722 19 48.94 +09 11 21.1 18.8 VuES020H21
K21S00F KC2021 09 17.18491722 19 50.68 +09 10 35.9 18.7 VuES020H21
K21S00F KC2021 09 17.18685622 19 52.42 +09 09 50.8 18.6 VuES020H21
K21S00F KC2021 09 17.18879522 19 54.16 +09 09 05.7 18.6 VuES020H21
Observer details:
858 Tebbutt Observatory, Edgewood. Observer F. B. Zoltowski. 0.51-m Schmidt-
Cassegrain + CCD.
958 Observatoire de Dax. Observers P. Dupouy, J. B. de Vanssay. Measurer P.
Dupouy. 0.43-m f/2.7 reflector + CCD.
G96 Mt. Lemmon Survey. Observer G. J. Leonard. Measurers E. J. Christensen,
G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, R. A.
Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D. Rankin, R. L.
Seaman, F. C. Shelly, K. W. Wierzchos. 1.5-m reflector + 10K CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers T. Linder, R. Holmes, L. Horn. 0.81-m f/4.0 astrograph + CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.41-m f/6.3 Schmidt-Cassegrain
+ CCD.
K88 GINOP-KHK, Piszkesteto. Observer K. Sarneczky. 0.60-m Schmidt + CCD.
Z80 Northolt Branch Observatory. Observer G. Wells. Measurers G. Wells, D.
Bamberger. 0.25-m f/8.0 Ritchey-Chretien + CCD.
Orbital elements:
2021 SF Earth MOID = 0.0506 AU
Epoch 2021 July 5.0 TT = JDT 2459400.5 Veres
M 338.49666 (2000.0) P Q
n 0.59237578 Peri. 136.26434 +0.67638980 +0.73618018
a 1.4041210 Node 176.08107 -0.73384377 +0.67626544
e 0.2906600 Incl. 19.79261 -0.06300918 +0.02652912
P 1.66 H 24.02 G 0.15 U 8
Residuals in seconds of arc
210916 G96 1.3- 2.1+ 210916 G96 0.1+ 0.0 210916 Z80 0.4- 0.1-
210916 G96 0.4+ 0.0 210916 G96 0.1+ 0.1+ 210916 Z80 0.3- 0.2+
210916 G96 0.7+ 0.1- 210916 958 0.0 0.2+ 210916 Z80 0.4- 0.4-
210916 G96 1.4+ 0.9- 210916 K88 0.6- 0.2- 210917 858 0.1- 0.4+
210916 G96 0.0 0.2+ 210916 958 0.5+ 0.3- 210917 858 0.1+ 0.2+
210916 G96 0.2+ 0.4- 210916 K88 0.3+ 0.7- 210917 858 0.1- 0.4+
210916 G96 0.4+ 0.0 210916 958 0.0 0.5+ 210917 H21 0.3+ 0.2-
210916 G96 0.1+ 0.0 210916 J95 0.2+ 0.0 210917 H21 0.3+ 0.2-
210916 G96 0.2+ 0.1+ 210916 J95 0.2- 0.2+ 210917 H21 0.2+ 0.2-
210916 G96 0.1+ 0.1+ 210916 J95 0.1- 0.2+ 210917 H21 0.2+ 0.2-
Ephemeris:
2021 SF a,e,i = 1.40, 0.29, 20 q = 0.9960
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 08 18 16 02 19.1 +59 07 35 0.2013 0.9986 80.4 88.2 23.6
...
2021 09 02 17 48 26.3 +58 24 20 0.1107 1.0178 91.4 82.3 22.2
...
2021 09 10 20 02 11.4 +47 20 13 0.06737 1.0352 112.9 63.6 20.5
...
2021 09 16 22 00 10.0 +16 57 13 0.05251 1.0510 149.5 29.0 19.0
2021 09 17 22 16 52.5 +10 24 12 0.05304 1.0539 156.1 22.7 18.8
2021 09 18 22 32 21.5 +04 02 25 0.05453 1.0568 161.7 17.4 18.7
...
2021 09 24 23 41 17.2 -22 55 33 0.07845 1.0754 156.1 22.2 19.7
...
2021 10 02 00 29 43.8 -36 12 20 0.1286 1.1030 140.3 35.4 21.2
...
2021 10 17 01 07 17.7 -41 23 27 0.2370 1.1613 129.3 41.6 22.8
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-S20
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