MPEC 2023-H253 : 2019 GK21
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M.P.E.C. 2023-H253 Issued 2023 April 30, 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 GK21
Revision to MPEC 2019-H35
Additional Observations:
K19G21K 2C2023 04 19.07016114 32 22.961-38 57 29.38 20.7 GVEH253J04
K19G21K 5C2023 04 28.14029712 36 49.878-29 13 02.13 21.3 GVEH253G37
K19G21K 5C2023 04 28.14431412 36 48.280-29 12 50.94 21.8 GVEH253G37
Observer details:
G37 Lowell Discovery Telescope. Observer M. Devogele. Measurer M. Micheli.
4.3-m reflector + CCD.
J04 ESA Optical Ground Station, Tenerife. Observers P. Ruiz, F. Ocana, M.
Micheli, L. Conversi. Measurers M. Micheli, F. Ocana, R. Kresken, M.
Busch, E. Schwab, A. Knofel. 1.0-m f/4.4 reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
230419 J04 0.19+ 0.04+ 230428 G37 0.12+ 0.07+ MPO740884 +0.01 days
Orbital elements:
2019 GK21 Earth MOID = 0.0027 AU
Epoch 2023 Feb. 25.0 TT = JDT 2460000.5 Veres
M 48.59126 (2000.0) P Q
n 1.23423641 Peri. 46.64472 +0.40524560 -0.91355628
a 0.8607370 Node 19.53012 +0.80608074 +0.33925269
e 0.3402054 Incl. 5.92515 +0.43128858 +0.22432685
P 0.80 H 25.67 G 0.15 U 1
Residuals in seconds of arc
190414 703 0.7+ 0.5- 190415 I52 0.2- 0.1- 190422 I52 0.2+ 0.5-
190414 703 0.0 0.1+ 190415 I52 0.1+ 0.0 190422 H01 0.0 0.0
190414 703 0.0 0.0 190415 I52 0.2- 0.2- 190422 I52 0.1- 0.0
190414 703 0.2- 0.1+ 190415 K63 0.0 0.1- 190422 H01 0.0 0.0
190414 H01 0.0 0.1+ 190415 K63 0.1- 0.7- 190423 I52 0.1- 0.1-
190414 H01 0.0 0.1+ 190415 K63 0.3+ 0.1- 190423 I52 0.1- 0.1+
190414 H01 0.1- 0.0 190416 I52 0.2- 0.7- 190423 I52 0.2- 0.1-
190414 H01 0.1- 0.0 190416 I52 0.3+ 1.4- 190423 I52 0.0 0.3+
190414 I52 0.3- 0.0 190416 I52 0.1- 0.1- 190424 691 0.4- 0.6+
190414 I52 0.3- 0.1- 190416 246 0.1+ 0.1- 190424 691 0.1+ 0.2+
190414 I52 0.2- 0.0 190416 246 (3.0+ 0.9-) 190424 691 0.7+ 1.1+
190414 I52 0.3- 0.1- 190416 L29 0.2+ 0.3+ 190425 291 0.1- 0.4+
190414 E23 0.2+ 0.3+ 190416 L29 0.2- 0.2- 190425 291 0.1- 0.3+
190414 E23 0.3- 0.6+ 190416 L29 2.0+ 0.5- 190425 291 0.3- 0.0
190414 E23 1.0- 1.4+ 190419 H01 0.0 0.1+ 190426 695 0.1+ 0.1+
190414 E23 0.2+ 0.5+ 190419 H01 0.0 0.1- 190426 695 0.0 0.0
190414 E23 0.0 0.4+ 190419 H01 0.1- 0.0 190426 695 0.2- 0.2+
190414 L01 0.1+ 0.4- 190419 H01 0.0 0.1+ 190426 291 0.1+ 0.2-
190414 L01 0.3- 0.4- 190419 L01 0.8+ 0.9- 190426 291 0.0 0.0
190414 L01 0.3+ 0.1- 190419 L01 0.6+ 0.7- 190426 291 0.5- 0.7+
190414 L01 0.3- 0.1- 190421 H21 0.2+ 0.1+ 190507 T12 0.0 0.0
190414 C95 1.1- 1.1+ 190421 H21 0.1+ 0.0 190507 T12 0.1- 0.0
190414 C95 1.3+ 0.9+ 190421 H21 0.1- 0.0 230419 J04 0.1- 0.2-
190414 X31 0.2+ 0.0 190422 H01 0.0 0.0 230428 G37 0.1- 0.1+
190414 X31 0.1+ 0.2- 190422 I52 0.0 0.1- 230428 G37 0.1+ 0.2-
190414 X31 0.3- 0.3- 190422 I52 0.2- 0.2-
190415 I52 0.4- 0.0 190422 H01 0.1- 0.0
Ephemeris:
2019 GK21 a,e,i = 0.86, 0.34, 6 q = 0.5679
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 03 31 21 12 07.9 -06 45 14 0.07185 0.9560 51.9 124.7 25.1
...
2023 04 15 16 32 34.9 -39 49 40 0.03990 1.0289 129.5 48.8 20.6
...
2023 04 23 13 22 59.5 -34 22 32 0.06065 1.0611 156.3 22.4 20.8
...
2023 04 29 12 31 49.6 -28 29 53 0.08551 1.0821 150.6 27.2 21.7
2023 04 30 12 26 44.9 -27 44 47 0.09001 1.0853 149.2 28.4 21.9
2023 05 01 12 22 17.7 -27 03 07 0.09459 1.0885 147.8 29.6 22.0
...
2023 05 07 12 04 52.2 -23 50 55 0.1232 1.1059 139.9 36.0 22.8
...
2023 05 15 11 55 50.2 -21 17 13 0.1636 1.1249 131.0 42.7 23.7
...
2023 05 30 11 58 19.7 -19 11 49 0.2425 1.1474 117.9 51.3 24.8
A. U. Tomatic (C) Copyright 2023 MPC M.P.E.C. 2023-H253
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