MPEC 2021-G138 : 2021 GX5
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M.P.E.C. 2021-G138 Issued 2021 April 11, 05:07 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 GX5
Observations:
K21G05X* C2021 04 09.26918212 03 31.33 -22 07 20.5 19.88GVEG138G96
K21G05X C2021 04 09.27460812 03 29.53 -22 07 30.4 19.75GVEG138G96
K21G05X C2021 04 09.28003412 03 27.75 -22 07 40.4 19.95GVEG138G96
K21G05X C2021 04 09.28547212 03 25.96 -22 07 50.4 19.58GVEG138G96
K21G05X KC2021 04 09.35428612 03 03.11 -22 09 54.5 19.25GVEG138I52
K21G05X KC2021 04 09.35638812 03 02.42 -22 09 58.6 19.69GVEG138I52
K21G05X KC2021 04 09.35849212 03 01.73 -22 10 02.2 19.81GVEG138I52
K21G05X KC2021 04 09.36059412 03 01.03 -22 10 05.7 19.89GVEG138I52
K21G05X |C2021 04 10.18550 11 58 32.21 -22 34 34.3 19.7 VuEG138807
K21G05X |C2021 04 10.18784 11 58 31.40 -22 34 38.8 19.9 VuEG138807
K21G05X |C2021 04 10.19029 11 58 30.57 -22 34 43.2 19.7 VuEG138807
K21G05X C2021 04 10.20306711 58 27.18 -22 35 26.2 19.57GVEG138I52
K21G05X C2021 04 10.20508911 58 26.55 -22 35 29.4 20.25GVEG138I52
K21G05X C2021 04 10.20550811 58 26.37 -22 35 30.7 19.59GVEG138I52
K21G05X C2021 04 10.29745 11 57 55.55 -22 38 15.5 20.2 GVEG138654
K21G05X C2021 04 10.32816 11 57 45.20 -22 39 10.2 19.6 GVEG138654
K21G05X C2021 04 10.36020 11 57 34.38 -22 40 06.6 17.7 GVEG138654
K21G05X KC2021 04 11.16229 11 53 09.78 -23 03 44.5 20.0 RqEG138734
K21G05X KC2021 04 11.16671011 53 08.67 -23 03 50.8 19.66GVEG138I52
K21G05X KC2021 04 11.16745211 53 08.39 -23 03 52.0 19.80GVEG138I52
K21G05X KC2021 04 11.16751 11 53 08.13 -23 03 53.5 19.8 RqEG138734
K21G05X KC2021 04 11.16819111 53 08.16 -23 03 53.0 20.00GVEG138I52
K21G05X KC2021 04 11.16893311 53 07.92 -23 03 54.0 19.19GVEG138I52
K21G05X KC2021 04 11.17013 11 53 07.30 -23 03 57.9 19.7 RqEG138734
K21G05X KC2021 04 11.18580811 53 02.08 -23 04 24.8 19.7 VqEG138858
K21G05X KC2021 04 11.18988611 53 00.64 -23 04 31.8 18.9 VqEG138858
K21G05X KC2021 04 11.19409111 52 59.23 -23 04 39.3 19.0 VqEG138858
Observer details:
654 Table Mountain Observatory, Wrightwood-PHMC. Observers P. Choi, N. Saini,
C. Zhai, R. Trahan, M. Shao.
734 Farpoint Observatory, Eskridge. Observers G. Hug, D. Cromer, D. Goodin,
R. Valentine. Measurer D. Cromer. 0.7-m reflector + CCD.
807 Cerro Tololo Observatory, La Serena. Observers T. Linder, R. Holmes.
0.61-m f/6.5 astrograph + CCD.
858 Tebbutt Observatory, Edgewood. Observer F. B. Zoltowski. 0.51-m Schmidt-
Cassegrain + CCD.
G96 Mt. Lemmon Survey. Observer G. J. Leonard. Measurers E. J. Christensen,
G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, R. A.
Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D. Rankin, R. L.
Seaman, F. C. Shelly, K. W. Wierzchos. 1.5-m reflector + 10K CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observers D. Rankin, D. C. Fuls.
Measurers E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D.
Grauer, H. Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, T. A.
Pruyne, D. Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos. 1.0-m
reflector + CCD.
Orbital elements:
2021 GX5 Earth MOID = 0.1455 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Bell
M 214.53717 (2000.0) P Q
n 0.64630520 Peri. 312.99781 +0.74868238 +0.66070511
a 1.3248833 Node 6.38062 -0.37044255 +0.48482765
e 0.4278813 Incl. 29.22152 -0.54976997 +0.57307146
P 1.52 H 20.22 G 0.15 U 9
Residuals in seconds of arc
210409 G96 0.2- 0.2+ 210410 807 0.1- 0.1- 210411 I52 0.1+ 0.5-
210409 G96 0.1- 0.1+ 210410 807 0.1- 0.2- 210411 I52 0.2- 0.4-
210409 G96 0.0+ 0.0- 210410 I52 0.2- 0.1+ 210411 734 (1.2+ 0.2+)
210409 G96 0.2+ 0.1- 210410 I52 0.4+ 0.5+ 210411 I52 0.0+ 0.0-
210409 I52 0.1- 0.0- 210410 I52 0.1- 0.0- 210411 I52 0.2+ 0.2+
210409 I52 0.1+ 0.4- 210410 654 0.0+ 0.1+ 210411 734 (2.1+ 0.4+)
210409 I52 0.1+ 0.2- 210410 654 0.0+ 0.1- 210411 858 0.5+ 0.1+
210409 I52 0.1+ 0.1+ 210410 654 0.4- 0.0- 210411 858 0.2- 0.3+
210410 807 0.3+ 0.2+ 210411 734 0.5- 0.0+ 210411 858 0.1+ 0.2+
Ephemeris:
2021 GX5 a,e,i = 1.32, 0.43, 29 q = 0.7580
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 03 12 13 42 46.1 -08 34 43 0.6272 1.5471 144.4 22.0 21.2
...
2021 03 27 13 04 09.3 -15 08 54 0.4827 1.4674 163.8 11.0 20.2
...
2021 04 04 12 30 27.6 -19 21 29 0.4315 1.4216 165.2 10.3 19.8
...
2021 04 10 11 59 33.7 -22 29 04 0.4074 1.3857 156.9 16.5 19.9
2021 04 11 11 54 03.7 -22 58 40 0.4046 1.3796 155.1 17.8 19.9
2021 04 12 11 48 29.5 -23 27 34 0.4022 1.3735 153.2 19.2 19.9
...
2021 04 18 11 14 17.2 -26 02 27 0.3947 1.3360 141.6 27.8 20.1
...
2021 04 26 10 30 09.7 -28 31 04 0.4009 1.2843 126.2 39.2 20.3
...
2021 05 11 09 25 00.9 -30 50 10 0.4417 1.1828 101.9 56.7 20.9
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-G138
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