MPEC 2021-H52 : 2021 GW23
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M.P.E.C. 2021-H52 Issued 2021 April 18, 18:22 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 GW23
Observations:
K21G23W C2021 04 06.54107914 07 23.500-03 03 45.36 22.68GVEH052F51
K21G23W C2021 04 06.55366114 07 24.192-03 04 02.13 22.06GVEH052F51
K21G23W C2021 04 06.56621614 07 24.909-03 04 19.51 22.49GVEH052F51
K21G23W* C2021 04 15.46573114 18 41.096-07 18 56.51 22.31wUEH052F51
K21G23W C2021 04 15.47900614 18 41.999-07 19 24.76 22.34wUEH052F51
K21G23W C2021 04 15.49229214 18 42.904-07 19 52.95 22.56wUEH052F51
K21G23W C2021 04 15.50556714 18 43.808-07 20 20.97 22.74wUEH052F51
K21G23W KC2021 04 16.23002314 19 47.24 -07 46 41.2 22.2 VuEH052H21
K21G23W KC2021 04 16.23610814 19 47.67 -07 46 54.4 22.7 VuEH052H21
K21G23W |C2021 04 16.25246 14 19 48.14 -07 46 43.4 22.0 GVEH052807
K21G23W |C2021 04 16.25948 14 19 48.64 -07 46 58.2 22.0 GVEH052807
K21G23W |C2021 04 16.26630 14 19 49.13 -07 47 13.5 22.0 GVEH052807
K21G23W ^C2021 04 16.59867414 20 16.686-08 00 07.84 21.94GVEH052568
K21G23W ^C2021 04 16.60109114 20 16.870-08 00 13.27 21.96GVEH052568
K21G23W ^C2021 04 16.60230014 20 16.963-08 00 15.88 21.98GVEH052568
Observer details:
568 Mauna Kea. Observers R. Wainscoat, L. Wells, T. Burdullis. Measurers R.
Weryk, R. Wainscoat. 3.6-m Canada-France-Hawaii Telescope + CCD.
807 Cerro Tololo Observatory, La Serena. Observers T. Linder, R. Holmes.
1.00-m f/10.0 astrograph + CCD.
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, K. Chambers, T. Lowe, A.
Schultz, M. Willman. Measurers S. Chastel, M. Huber, Y. Ramanjooloo, R.
Wainscoat, R. Weryk, K. Chambers, T. de Boer, L. Denneau, J. Fairlamb, H.
Flewelling, C.-C. Lin, E. Magnier. 1.8-m Ritchey-Chretien + CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes. 1.3-m f/4.0
astrograph + CCD.
Orbital elements:
2021 GW23 Earth MOID = 0.1197 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Bell
M 314.14795 (2000.0) P Q
n 0.28876239 Peri. 208.47443 -0.42412837 +0.90315615
a 2.2669519 Node 36.54242 -0.80825016 -0.34438424
e 0.5050632 Incl. 6.41388 -0.40846886 -0.25633663
P 3.41 H 24.69 G 0.15 U 7
Residuals in seconds of arc
210406 F51 0.3+ 0.1- 210415 F51 0.0 0.1- 210416 807 0.1- 0.5+
210406 F51 0.1- 0.2+ 210415 F51 0.0 0.1+ 210416 807 0.1- 0.2+
210406 F51 0.2- 0.2- 210416 H21 0.3+ 0.2+ 210416 568 0.0 0.0
210415 F51 0.0 0.0 210416 H21 0.1+ 0.4+ 210416 568 0.0 0.1-
210415 F51 0.0 0.1- 210416 807 0.1- 0.2- 210416 568 0.0 0.0
Ephemeris:
2021 GW23 a,e,i = 2.27, 0.51, 6 q = 1.1220
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 03 19 13 47 13.3 +01 29 40 0.3847 1.3466 151.6 20.6 24.3
...
2021 04 03 14 03 23.7 -01 50 07 0.2774 1.2653 161.0 14.9 23.2
...
2021 04 11 14 12 45.5 -04 56 45 0.2308 1.2273 166.0 11.4 22.7
...
2021 04 17 14 20 54.2 -08 14 57 0.2008 1.2019 169.7 8.6 22.2
2021 04 18 14 22 24.7 -08 54 00 0.1963 1.1979 170.3 8.1 22.1
2021 04 19 14 23 58.4 -09 34 56 0.1918 1.1941 170.9 7.7 22.0
...
2021 04 25 14 34 45.3 -14 23 59 0.1676 1.1727 173.8 5.3 21.6
...
2021 05 03 14 54 27.7 -22 55 31 0.1428 1.1496 171.9 7.1 21.3
...
2021 05 18 16 00 27.8 -43 12 00 0.1228 1.1247 155.9 21.6 21.4
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-H52
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