MPEC 2021-G128 : 2021 GM5
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M.P.E.C. 2021-G128 Issued 2021 April 10, 21:15 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 GM5
Observations:
K21G05M C2021 04 04.46485 15 26 30.70 -08 56 58.6 21.0 GVEG128G96
K21G05M C2021 04 04.46996 15 26 32.10 -08 56 31.1 20.9 GVEG128G96
K21G05M* C2021 04 09.54597615 56 23.628+00 18 46.63 20.42wUEG128F51
K21G05M C2021 04 09.55801715 56 28.185+00 20 24.44 20.67wUEG128F51
K21G05M C2021 04 09.57002315 56 32.718+00 22 01.74 21.07wUEG128F51
K21G05M C2021 04 09.58427715 56 38.140+00 23 57.96 21.37wUEG128F51
K21G05M 2C2021 04 10.21073016 01 06.600+01 51 05.04 20.7 GVEG128J04
K21G05M 2C2021 04 10.21449816 01 08.118+01 51 37.65 20.5 GVEG128J04
K21G05M 2C2021 04 10.21875416 01 09.806+01 52 13.96 20.4 GVEG128J04
K21G05M C2021 04 10.31983216 01 59.82 +02 06 35.9 20.5 GVEG128H01
K21G05M C2021 04 10.32525516 02 02.07 +02 07 22.9 20.6 GVEG128H01
K21G05M C2021 04 10.33513216 02 06.13 +02 08 48.7 20.4 GVEG128H01
K21G05M KC2021 04 10.34315316 02 09.81 +02 10 00.6 19.94GVEG128I52
K21G05M |C2021 04 10.34613 16 02 07.02 +02 12 14.8 19.1 VuEG128807
K21G05M C2021 04 10.34621116 02 10.70 +02 10 24.7 20.8 GVEG128H01
K21G05M KC2021 04 10.34662416 02 11.29 +02 10 30.0 19.96GVEG128I52
K21G05M |C2021 04 10.34904 16 02 08.19 +02 12 41.0 18.8 VuEG128807
K21G05M |C2021 04 10.35194 16 02 09.38 +02 13 06.0 18.7 VuEG128807
K21G05M KC2021 04 10.35356816 02 14.10 +02 11 30.3 20.20GVEG128I52
K21G05M ^C2021 04 10.62971116 04 12.229+02 52 16.86 20.10GVEG128568
K21G05M ^C2021 04 10.63069316 04 12.639+02 52 25.58 20.76GVEG128568
K21G05M ^C2021 04 10.63167216 04 13.048+02 52 34.27 20.10GVEG128568
Observer details:
568 Mauna Kea. Observers R. Wainscoat, C. Crowder, H. Flewelling. Measurers
R. Weryk, R. Wainscoat. 3.6-m Canada-France-Hawaii Telescope + CCD.
807 Cerro Tololo Observatory, La Serena. Observers T. Linder, R. Holmes.
0.61-m f/6.5 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.
G96 Mt. Lemmon Survey. Observer K. W. Wierzchos. Measurers B. Gray, D.
Rankin, F. C. Shelly. 1.5-m reflector + 10K 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.
I52 Steward Observatory, Mt. Lemmon Station. Observer 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.
J04 ESA Optical Ground Station, Tenerife. Observer P. Ruiz. Measurers M.
Micheli, D. Koschny, L. Conversi, R. Kresken, A. Knofel, M. Busch, E.
Schwab. 1.0-m f/4.4 reflector + CCD.
Orbital elements:
2021 GM5 Earth MOID = 0.0567 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Bell
M 177.74418 (2000.0) P Q
n 0.90760711 Peri. 116.54508 +0.62120010 +0.78297179
a 1.0565031 Node 192.02722 -0.76314185 +0.59494876
e 0.2353433 Incl. 9.01294 -0.17811499 +0.18163466
P 1.09 H 24.16 G 0.15 U 7
Residuals in seconds of arc
210404 G96 0.1- 0.5- 210410 J04 0.5- 0.0+ 210410 807 0.1- 0.3+
210404 G96 0.2+ 0.4+ 210410 H01 0.0- 0.0- 210410 807 0.1+ 0.2+
210409 F51 0.1+ 0.2+ 210410 H01 0.0+ 0.1- 210410 I52 0.2+ 0.8-
210409 F51 0.1+ 0.1+ 210410 H01 0.0- 0.0- 210410 568 0.0- 0.0-
210409 F51 0.2- 0.2- 210410 I52 0.0+ 0.0- 210410 568 0.0+ 0.0+
210409 F51 0.1- 0.1- 210410 807 0.1+ 0.6- 210410 568 0.0+ 0.0+
210410 J04 0.1- 0.1- 210410 H01 0.1+ 0.1-
210410 J04 0.1- 0.2+ 210410 I52 (0.8+ 0.8-)
Ephemeris:
2021 GM5 a,e,i = 1.06, 0.24, 9 q = 0.8079
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 03 11 14 11 54.5 -23 12 34 0.2502 1.1730 131.1 39.7 23.1
...
2021 03 26 14 49 37.9 -18 08 56 0.1577 1.1225 139.8 35.0 21.8
...
2021 04 03 15 19 34.3 -10 54 47 0.1153 1.0931 142.2 34.1 21.1
...
2021 04 09 15 52 39.3 -00 52 57 0.08882 1.0702 139.0 37.8 20.6
2021 04 10 15 59 36.3 +01 21 52 0.08507 1.0663 137.7 39.2 20.5
2021 04 11 16 07 05.4 +03 48 17 0.08156 1.0624 136.1 40.8 20.5
...
2021 04 17 17 07 00.7 +22 21 21 0.06712 1.0386 119.6 57.1 20.4
...
2021 04 25 19 22 27.1 +46 56 33 0.07068 1.0064 88.3 87.6 21.5
...
2021 05 10 23 19 51.5 +52 01 03 0.1243 0.9460 56.1 117.7 24.2
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-G128
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