MPEC 2023-M40 : 2019 GC20
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M.P.E.C. 2023-M40 Issued 2023 June 18, 14:06 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
2019 GC20
Revision to MPEC 2019-G185
Additional Observations:
K19G20C 0C2023 06 11.26891011 56 14.235-37 14 21.96 23.01GVEM040T14
K19G20C 0C2023 06 12.27758511 56 11.024-37 15 19.84 23.56GVEM040T14
K19G20C 0C2023 06 12.28157211 56 10.997-37 15 19.99 23.38GVEM040T14
K19G20C 0C2023 06 12.28557211 56 10.970-37 15 20.18 23.16GVEM040T14
K19G20C 0C2023 06 13.25479211 56 12.162-37 16 27.03 23.26GVEM040T14
K19G20C 0C2023 06 13.25877911 56 12.158-37 16 27.23 23.28GVEM040T14
K19G20C 0C2023 06 13.26276411 56 12.144-37 16 27.45 23.25GVEM040T14
K19G20C 0C2023 06 14.26991811 56 17.255-37 17 47.36 23.38GVEM040T14
K19G20C 0C2023 06 14.27390011 56 17.262-37 17 47.65 23.36GVEM040T14
K19G20C 0C2023 06 14.27788711 56 17.263-37 17 47.92 23.44GVEM040T14
Observer details:
T14 Canada-France-Hawaii Telescope, Maunakea. Observer C. Cunningham.
Measurer D. J. Tholen. 3.6-m f/4.1 reflector + 1024 x 2306 pixels
Megacam.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
230611 T14 0.02+ 0.07+ 230614 T14 0.01+ 0.06+ MPO740884 +0.06 days
Orbital elements:
2019 GC20 Earth MOID = 0.0347 AU
Epoch 2023 Feb. 25.0 TT = JDT 2460000.5 Veres
M 142.93763 (2000.0) P Q
n 0.74596555 Peri. 12.36268 +0.85741391 -0.49741123
a 1.2040842 Node 19.26070 +0.43149397 +0.55507700
e 0.2022906 Incl. 23.58789 +0.28045382 +0.66668703
P 1.32 H 22.26 G 0.15 U 2
Residuals in seconds of arc
190402 F51 0.1- 0.1+ 190410 807 0.1- 0.1- 190427 807 0.3+ 0.1+
190402 F51 0.1- 0.1- 190410 807 0.1- 0.1+ 190428 807 0.1+ 0.2-
190402 F51 0.1+ 0.1- 190410 H21 0.0 0.6+ 190428 807 0.0 0.2-
190402 F51 0.1- 0.1- 190410 H21 0.0 0.3+ 190428 807 0.2- 0.0
190402 F51 0.1+ 0.0 190411 291 0.3+ 0.2- 230611 T14 0.1+ 0.0
190402 F51 0.0 0.2- 190411 291 0.1- 0.3+ 230612 T14 0.0 0.0
190402 F51 0.0 0.1- 190413 691 0.5- 0.1+ 230612 T14 0.0 0.0
190406 F51 0.0 0.1- 190413 691 0.1- 0.1- 230612 T14 0.0 0.0
190406 F51 0.2+ 0.1+ 190413 691 0.5+ 0.2+ 230613 T14 0.1- 0.0
190406 F51 0.1- 0.2- 190415 807 0.1+ 0.0 230613 T14 0.0 0.0
190408 F51 0.0 0.2+ 190415 807 0.1+ 0.0 230613 T14 0.0 0.0
190408 F51 0.3+ 0.0 190415 807 0.1+ 0.1- 230614 T14 0.0 0.0
190408 F51 0.3+ 0.0 190427 807 0.3+ 0.0 230614 T14 0.0 0.0
190410 807 0.5- 0.1+ 190427 807 0.3+ 0.0 230614 T14 0.0 0.0
Ephemeris:
2019 GC20 a,e,i = 1.20, 0.20, 24 q = 0.9605
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 05 19 12 21 49.1 -37 18 00 0.5336 1.4319 133.4 30.9 23.0
...
2023 06 03 11 59 34.8 -37 12 16 0.6158 1.4146 118.4 39.1 23.5
...
2023 06 11 11 56 16.2 -37 13 58 0.6631 1.4029 111.7 42.3 23.7
...
2023 06 17 11 56 51.7 -37 22 14 0.6985 1.3929 107.2 44.2 23.9
2023 06 18 11 57 11.3 -37 24 17 0.7043 1.3912 106.5 44.4 23.9
2023 06 19 11 57 34.4 -37 26 33 0.7101 1.3894 105.8 44.7 23.9
...
2023 06 25 12 01 05.3 -37 44 28 0.7443 1.3783 101.9 46.2 24.1
...
2023 07 03 12 08 36.9 -38 19 38 0.7873 1.3620 97.2 47.8 24.2
...
2023 07 18 12 30 08.2 -39 55 27 0.8576 1.3273 89.8 50.0 24.4
A. U. Tomatic (C) Copyright 2023 MPC M.P.E.C. 2023-M40
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