MPEC 2023-J160 : 2021 GX12
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M.P.E.C. 2023-J160 Issued 2023 May 15, 14:07 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 GX12
Revision to MPEC 2021-H08
Additional Observations:
K21G12X C2019 03 25.26791 11 04 57.07 +54 15 16.5 21.4 GVEJ160G96
K21G12X C2019 03 25.27317 11 04 56.50 +54 14 55.2 21.9 GVEJ160G96
K21G12X C2019 03 25.28368 11 04 55.32 +54 14 12.9 21.4 GVEJ160G96
K21G12X 0C2023 05 13.47319615 51 49.782-38 11 55.04 22.95GVEJ160T14
K21G12X 0C2023 05 13.47533315 51 49.470-38 11 55.78 23.18GVEJ160T14
K21G12X 0C2023 05 13.47747115 51 49.160-38 11 56.71 22.97GVEJ160T14
K21G12X 0C2023 05 14.48799115 49 24.815-38 18 19.49 23.15GVEJ160T14
K21G12X 0C2023 05 14.49012815 49 24.499-38 18 20.31 23.35GVEJ160T14
K21G12X 0C2023 05 14.49226615 49 24.180-38 18 21.08 23.03GVEJ160T14
Observer details:
G96 Mt. Lemmon Survey. Observer R. A. Kowalski. Measurers B. Gray, D.
Rankin, F. C. Shelly. 1.5-m reflector + 10K CCD.
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, reference and Delta-T
190325 G96 17.7- 11.8- 230514 T14 6.3- 4.0- MPO740958 +0.01 days
Orbital elements:
2021 GX12 PHA, Earth MOID = 0.0386 AU
Epoch 2023 Feb. 25.0 TT = JDT 2460000.5 Veres
M 91.06876 (2000.0) P Q
n 0.53323533 Peri. 49.70124 +0.14098640 -0.97038385
a 1.5061103 Node 33.76947 +0.76704619 -0.01819874
e 0.3760976 Incl. 20.66455 +0.62590972 +0.24088171
P 1.85 H 21.33 G 0.15 U 3
Residuals in seconds of arc
190325 G96 0.1- 0.1+ 210412 807 0.2- 0.1- 210422 V06 0.0 0.2-
190325 G96 0.1+ 0.0 210413 H01 0.1- 0.0 210422 V06 0.0 0.3-
190325 G96 0.2+ 0.0 210413 H01 0.2- 0.0 210507 291 0.3- 0.0
210410 F51 0.2+ 0.0 210413 H01 0.1- 0.0 210507 291 0.0 0.1-
210410 F51 0.1+ 0.1+ 210413 H01 0.0 0.1- 210507 291 0.0 0.0
210410 F51 0.1+ 0.0 210416 F51 0.1- 0.0 230513 T14 0.1- 0.0
210410 F51 0.3- 0.1- 210416 F51 0.0 0.2- 230513 T14 0.0 0.0
210411 807 0.0 0.0 210416 F51 0.1- 0.1+ 230513 T14 0.0 0.1-
210411 807 0.1+ 0.1+ 210417 291 0.4+ 1.2+ 230514 T14 0.0 0.1+
210411 807 0.2- 0.0 210417 291 0.1- 0.1- 230514 T14 0.0 0.0
210412 807 0.2+ 0.0 210417 291 0.1+ 0.3+ 230514 T14 0.0 0.0
210412 807 0.1+ 0.3- 210422 V06 0.0 0.1-
Ephemeris:
2021 GX12 a,e,i = 1.51, 0.38, 21 q = 0.9397
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 04 15 16 42 25.6 -32 44 29 1.0833 1.8922 130.1 23.9 24.0
...
2023 04 30 16 20 58.1 -36 04 52 1.0134 1.9353 146.6 16.6 23.7
...
2023 05 08 16 04 28.1 -37 29 02 0.9956 1.9559 154.7 12.8 23.5
...
2023 05 14 15 50 34.9 -38 15 11 0.9928 1.9702 159.2 10.5 23.5
2023 05 15 15 48 11.7 -38 21 15 0.9932 1.9725 159.7 10.3 23.4
2023 05 16 15 45 47.8 -38 26 50 0.9940 1.9748 160.1 10.0 23.4
...
2023 05 22 15 31 23.3 -38 50 14 1.0039 1.9879 160.8 9.6 23.5
...
2023 05 30 15 13 09.4 -38 56 01 1.0319 2.0038 156.9 11.5 23.6
...
2023 06 14 14 46 32.7 -38 11 57 1.1253 2.0293 142.8 17.6 24.0
A. U. Tomatic (C) Copyright 2023 MPC M.P.E.C. 2023-J160
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