[Iaude] MPEC H74: 2017 SQ21 [a=2.38,e=0.50,i=8.7,H=20.24]
mpec at cfa.harvard.edu
mpec at cfa.harvard.edu
Thu Apr 25 10:12:01 EDT 2024
M.P.E.C. 2024-H74 Issued 2024 April 25, 14:10 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 at CFA.HARVARD.EDU
URL https://www.minorplanetcenter.net/ ISSN 1523-6714
2017 SQ21
Revision to MPEC 2017-T26
Additional Observations:
K17S21Q C2024 04 01.42387412 55 49.598+04 44 17.69 22.56GVEH074F52
K17S21Q C2024 04 01.43585712 55 48.745+04 44 26.37 22.49GVEH074F52
K17S21Q C2024 04 01.44785512 55 47.954+04 44 35.05 22.44GVEH074F52
K17S21Q C2024 04 01.45984512 55 47.205+04 44 43.87 22.68GVEH074F52
K17S21Q KC2024 04 18.17262112 37 04.810+07 54 43.70 22.19GVEH074V06
K17S21Q KC2024 04 18.19325412 37 03.390+07 54 56.30 22.56GVEH074V06
K17S21Q KC2024 04 18.21388512 37 01.930+07 55 07.60 21.74GVEH074V06
K17S21Q KC2024 04 18.23452512 37 00.600+07 55 20.70 22.88GVEH074V06
Observer details:
F52 Pan-STARRS 2, Haleakala. Observers J. Herman, T. Lowe, P. Minguez, A.
Schultz, I. Smith. Measurers K. Chambers, T. de Boer, J. Fairlamb, H.
Gao, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo, R. Wainscoat, R.
Weryk. 1.8-m Ritchey-Chretien + CCD.
V06 Catalina Sky Survey-Kuiper. Observer J. K. Hogan. Measurers T. Beuden,
V. F. Carvajal, D. Fay, J. B. Fazekas, D. C. Fuls, A. R. Gibbs, A. D.
Grauer, H. Groeller, J. K. Hogan, R. A. Kowalski, S. M. Larson, G. J.
Leonard, D. Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos. 1.55-m
reflector + 1K CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
240401 F52 0.05- 0.01- 240418 V06 0.05- 0.01- E2024-BH3 +0.01 days
Orbital elements:
2017 SQ21 Earth MOID = 0.2014 AU
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5 Veres
M 306.69358 (2000.0) P Q
n 0.26798773 Peri. 150.21320 +0.55022757 +0.83221407
a 2.3826456 Node 152.99335 -0.79277068 +0.54633832
e 0.4953639 Incl. 8.65483 -0.26222941 +0.09452074
P 3.68 H 20.24 G 0.15 U 2
Residuals in seconds of arc
170930 F51 0.1- 0.2- 171001 F51 0.1+ 0.1- 171031 H21 0.3- 0.1-
170930 F51 0.1- 0.1- 171005 695 0.6+ 0.0 171031 H21 0.4- 0.0
170930 F51 0.1- 0.2- 171005 695 0.4- 0.0 171127 807 0.0 0.2-
170930 F51 0.0 0.1- 171005 695 0.0 0.3- 171127 807 0.0 0.0
171001 695 0.0 0.3+ 171020 H21 0.3+ 0.2- 171127 807 0.2+ 0.1+
171001 695 0.2- 0.0 171020 H21 0.5+ 0.4- 240401 F52 0.3+ 0.1+
171001 695 0.2+ 0.0 171020 H21 0.4+ 0.1- 240401 F52 0.5- 0.0
171001 H21 0.2- 0.2+ 171021 807 0.2- 0.4+ 240401 F52 0.3- 0.0
171001 H21 0.2- 0.4+ 171021 807 0.2+ 0.4+ 240401 F52 0.6+ 0.1+
171001 H21 0.3- 0.5+ 171021 807 0.0 0.2- 240418 V06 0.1+ 0.2+
171001 H21 0.3- 0.4+ 171026 H21 0.1- 0.4- 240418 V06 0.1- 0.3+
171001 F51 0.0 0.0 171026 H21 0.3- 0.3- 240418 V06 0.8- 0.7-
171001 F51 0.2+ 0.2+ 171026 H21 0.2- 0.5- 240418 V06 0.4+ 0.0
171001 F51 0.1+ 0.1+ 171031 H21 0.5- 0.1-
Ephemeris:
2017 SQ21 a,e,i = 2.38, 0.50, 9 q = 1.2024
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2024 03 26 13 02 21.4 +03 26 50 1.2494 2.2349 168.0 5.3 22.9
...
2024 04 10 12 46 16.6 +06 26 23 1.1652 2.1460 164.0 7.4 22.8
...
2024 04 18 12 37 16.0 +07 53 03 1.1446 2.0976 154.9 11.7 22.9
...
2024 04 24 12 30 56.1 +08 48 44 1.1391 2.0610 147.8 15.1 22.9
2024 04 25 12 29 56.4 +08 57 04 1.1389 2.0548 146.6 15.6 22.9
2024 04 26 12 28 57.9 +09 05 07 1.1389 2.0487 145.4 16.2 23.0
...
2024 05 02 12 23 37.3 +09 47 02 1.1431 2.0116 138.4 19.4 23.0
...
2024 05 10 12 18 07.4 +10 24 46 1.1579 1.9617 129.5 23.4 23.1
...
2024 05 25 12 13 53.8 +10 38 45 1.2044 1.8671 114.4 29.6 23.3
A. U. Tomatic (C) Copyright 2024 MPC M.P.E.C. 2024-H74
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