MPEC 2021-H08 : 2021 GX12
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M.P.E.C. 2021-H08 Issued 2021 April 16, 14:32 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 GX12
Observations:
K21G12X* C2021 04 10.49218314 49 52.085-12 50 13.84 22.26wUEH008F51
K21G12X C2021 04 10.50339714 49 50.427-12 50 20.68 22.42wUEH008F51
K21G12X C2021 04 10.51460914 49 48.779-12 50 27.54 22.30wUEH008F51
K21G12X C2021 04 10.52580114 49 47.110-12 50 34.44 22.27wUEH008F51
K21G12X |C2021 04 11.27853 14 47 59.82 -12 58 00.4 22.0 GVEH008807
K21G12X |C2021 04 11.28296 14 47 59.17 -12 58 03.0 22.1 GVEH008807
K21G12X |C2021 04 11.28684 14 47 58.58 -12 58 05.4 22.1 GVEH008807
K21G12X |C2021 04 12.31875 14 45 29.49 -13 08 22.4 21.6 GVEH008807
K21G12X |C2021 04 12.32244 14 45 28.93 -13 08 24.9 21.6 GVEH008807
K21G12X |C2021 04 12.32613 14 45 28.36 -13 08 26.8 21.9 GVEH008807
K21G12X C2021 04 13.34142414 43 00.40 -13 18 36.7 21.5 GVEH008H01
K21G12X C2021 04 13.34488614 42 59.87 -13 18 38.7 21.7 GVEH008H01
K21G12X C2021 04 13.35531114 42 58.30 -13 18 44.7 21.9 GVEH008H01
K21G12X C2021 04 13.36265214 42 57.19 -13 18 49.1 22.1 GVEH008H01
Observer details:
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, T. Lowe, A. Schultz, M.
Willman. Measurers K. Chambers, S. Chastel, T. de Boer, L. Denneau, J.
Fairlamb, H. Flewelling, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo,
R. Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien + CCD.
H01 Magdalena Ridge Observatory, Socorro. Observers W. H. Ryan, E. V. Ryan.
Measurer W. H. Ryan. 2.4-m f/8.9 Ritchey-Chretien + CCD.
Orbital elements:
2021 GX12 PHA, Earth MOID = 0.0378 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 24.53196 (2000.0) P Q
n 0.53193607 Peri. 49.57915 +0.14315576 -0.96968051
a 1.5085617 Node 33.79409 +0.76547400 -0.01836530
e 0.3780481 Incl. 20.85973 +0.62734040 +0.24368510
P 1.85 H 21.08 G 0.15 U 8
Residuals in seconds of arc
210410 F51 0.1+ 0.0 210411 807 0.1+ 0.1+ 210413 H01 0.1- 0.0
210410 F51 0.0 0.0 210411 807 0.2- 0.0 210413 H01 0.1- 0.1+
210410 F51 0.1- 0.0 210412 807 0.2+ 0.1+ 210413 H01 0.0 0.0
210410 F51 (0.4- 0.1-) 210412 807 0.1+ 0.2- 210413 H01 0.1+ 0.0
210411 807 0.0 0.0 210412 807 0.2- 0.0
Ephemeris:
2021 GX12 a,e,i = 1.51, 0.38, 21 q = 0.9383
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 03 17 15 31 36.5 -08 17 14 0.7619 1.5485 123.1 32.6 22.8
...
2021 04 01 15 10 17.4 -11 08 01 0.7123 1.6232 142.5 22.0 22.5
...
2021 04 09 14 53 21.3 -12 34 46 0.7013 1.6611 154.2 15.2 22.3
...
2021 04 15 14 38 55.0 -13 34 19 0.7028 1.6884 163.3 9.8 22.1
2021 04 16 14 36 25.5 -13 43 38 0.7039 1.6929 164.8 8.9 22.1
2021 04 17 14 33 55.2 -13 52 45 0.7053 1.6974 166.3 8.0 22.0
...
2021 04 23 14 18 49.3 -14 43 17 0.7195 1.7235 175.4 2.7 21.8
...
2021 05 01 13 59 35.8 -15 39 02 0.7537 1.7571 172.0 4.6 22.1
...
2021 05 16 13 31 07.3 -16 54 59 0.8619 1.8156 151.5 15.4 22.9
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-H08
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