MPEC 2023-O27 : 2021 KA17
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M.P.E.C. 2023-O27 Issued 2023 July 18, 11:16 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 KA17
Revision to MPEC 2022-Q99
Additional Observations:
K21K17A C2022 07 23.37581019 11 21.450-47 03 08.77 20.74GVEO027F52
K21K17A C2022 07 23.38341419 11 19.232-47 03 07.21 21.16GVEO027F52
K21K17A C2022 07 23.39104119 11 17.101-47 03 05.43 20.74GVEO027F52
K21K17A C2022 07 23.39868819 11 14.877-47 03 04.23 21.36GVEO027F52
K21K17A C2023 07 16.57021623 02 05.621-29 02 15.29 21.58wXEO027F51
K21K17A C2023 07 16.57935923 02 04.932-29 02 29.48 21.81wXEO027F51
K21K17A C2023 07 16.58958923 02 04.180-29 02 45.47 22.01wXEO027F51
K21K17A C2023 07 16.59867223 02 03.487-29 02 59.35 21.83wXEO027F51
K21K17A 2C2023 07 18.15883123 00 16.156-29 44 04.64 21.7 GVEO027J04
K21K17A 2C2023 07 18.18083323 00 14.227-29 44 39.74 21.5 GVEO027J04
Observer details:
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, T. Lowe, P. Minguez, A.
Schultz, I. Smith. Measurers K. Chambers, T. de Boer, J. Bulger, J.
Fairlamb, H. Gao, M. Huber, C.-C. Lin, T. Lowe, E. Magnier, P. Minguez, Y.
Ramanjooloo, A. Schultz, I. Smith, R. Wainscoat, R. Weryk. 1.8-m Ritchey-
Chretien + CCD.
F52 Pan-STARRS 2, Haleakala. Observers J. Bulger, K. Chambers, T. Dukes, T.
Lowe, P. Minguez, A. Schultz, I. Smith. Measurers S. Chastel, J.
Fairlamb, M. Huber, Y. Ramanjooloo, R. Wainscoat, R. Weryk. 1.8-m
Ritchey-Chretien + CCD.
J04 ESA Optical Ground Station, Tenerife. Observers P. Ruiz, M. Micheli, F.
Ocana, L. Conversi. Measurers M. Micheli, R. Kresken, F. Ocana, M.
Busch. 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
220723 F52 0.07- 0.13- 230718 J04 0.11- 0.08- MPO709992 +0.05 days
Orbital elements:
2021 KA17 PHA, Earth MOID = 0.0362 AU
Epoch 2023 Feb. 25.0 TT = JDT 2460000.5 Veres
M 27.00771 (2000.0) P Q
n 1.04627336 Peri. 81.16974 -0.58973017 -0.80405770
a 0.9609614 Node 45.25123 +0.69283377 -0.55178093
e 0.3662199 Incl. 6.10753 +0.41496951 -0.22142498
P 0.94 H 21.95 G 0.15 U 5
Residuals in seconds of arc
210531 C57(12.1+ 16.8+) 210601 C57 (5.9+ 7.6+) 210602 C57 (0.6+ 11.1+)
210531 C57 (5.8+ 15.5+) 210601 C57 (8.5+ 22.2+) 210602 C57 (1.6+ 14.8+)
210531 C57 (5.2+ 5.6+) 210601 C57(13.5+ 27.9+) 210602 C57 1.0+ 6.9-
210531 C57 (7.6+ 17.3+) 210601 C57 2.4+ 3.1- 210602 C57 (9.0+ 6.8+)
210531 C57 0.7+ 2.2- 210601 C57 2.6+ 2.7- 210602 C57 (8.0+ 18.5+)
210531 C57 2.3- 4.8+ 210601 C57 (8.9+ 20.2+) 210602 C57 3.2+ 6.8+
210531 C57(20.8+ 26.4+) 210601 C57 (6.4+ 11.7+) 210602 C57 2.5- 6.0+
210531 C57 (3.7+ 11.8+) 210601 C57 (7.4+ 21.6+) 210602 C57 9.8- 8.6+
210531 C57(20.3+ 23.9+) 210601 C57 (7.0+ 19.4+) 210602 C57 1.1+ 1.4-
210531 C57 (3.8+ 4.1+) 210601 C57 (0.1- 29.7+) 210602 C57 (1.6+ 12.3+)
210531 C57 (7.1+ 15.7+) 210601 C57 (2.6+ 11.3+) 210602 C57 (4.6+ 2.0-)
210531 C57 (6.5+ 15.0+) 210601 C57 (5.0+ 1.6-) 210603 C57 (6.5+ 2.7+)
210531 C57 (5.0+ 12.8+) 210601 C57 (4.3+ 20.0 ) 210603 C57 (7.5+ 18.4+)
210531 C57 (4.7+ 19.9+) 210601 C57 (3.3+ 1.6+) 210603 C57 (6.5+ 19.8+)
210531 C57 8.5- 7.8+ 210601 C57(13.4+ 12.7+) 210603 C57 (5.8+ 21.1+)
210531 C57 0.2- 3.7+ 210601 C57 (6.4+ 22.0+) 210603 C57 3.9+ 3.1-
210531 C57 1.5- 1.5- 210601 C57(10.4+ 18.2+) 210603 C57 6.8- 7.7-
210531 C57 (1.5+ 10.8+) 210601 C57(17.0+ 27.0+) 210603 C57 1.7- 0.3+
210531 C57 4.7- 6.0- 210601 C57 (4.6+ 10.0 ) 210603 C57 (7.5+ 6.1+)
210531 C57 2.6+ 16.4- 210601 C57 2.3+ 1.4- 210603 C57 (4.5+ 9.5+)
210601 C57 (5.5+ 2.9-) 210601 C57 0.1+ 7.3+ 210603 C57 0.3- 7.0-
210601 C57 (8.1+ 16.4+) 210601 C57 (0.8- 14.9+) 210603 C57 4.1+ 2.0-
210601 C57(12.2+ 11.4+) 210601 C57 (2.0+ 16.9+) 220723 F52 0.0 0.1+
210601 C57 (9.1+ 16.3+) 210601 C57 2.7+ 4.2+ 220723 F52 0.3- 0.0
210601 C57 (1.4+ 30.4+) 210601 C57 (7.1+ 18.0+) 220723 F52 0.3+ 0.2+
210601 C57 (4.0+ 10.4+) 210602 C57(10.6+ 15.4+) 220723 F52 0.0 0.3-
210601 C57 (7.5+ 7.0+) 210602 C57 (8.4+ 13.4+) 230716 F51 0.2+ 0.1+
210601 C57 (3.5+ 11.5+) 210602 C57 (6.5+ 13.4+) 230716 F51 0.0 0.1+
210601 C57 (3.6+ 4.4+) 210602 C57 (6.2+ 14.3+) 230716 F51 0.1+ 0.1-
210601 C57 (6.2+ 8.8+) 210602 C57 1.4+ 0.7+ 230716 F51 0.1- 0.1+
210601 C57 1.9+ 8.1- 210602 C57 (7.2+ 31.4+) 230718 J04 0.4+ 0.2-
210601 C57 (7.2+ 11.5+) 210602 C57 (3.7+ 10.6+) 230718 J04 0.5- 0.1+
210601 C57 (8.1+ 20.5+) 210602 C57 (6.5+ 10.0 )
Ephemeris:
2021 KA17 a,e,i = 0.96, 0.37, 6 q = 0.6090
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 06 18 22 59 44.6 -20 58 04 0.5254 1.2781 107.7 49.2 22.9
...
2023 07 03 23 07 51.0 -24 10 49 0.4475 1.3024 120.5 42.2 22.4
...
2023 07 11 23 06 24.8 -26 47 53 0.4078 1.3096 128.4 37.5 22.1
...
2023 07 17 23 01 37.6 -29 13 06 0.3804 1.3123 134.7 33.4 21.8
2023 07 18 23 00 27.7 -29 39 29 0.3761 1.3125 135.8 32.7 21.8
2023 07 19 22 59 10.9 -30 06 26 0.3719 1.3127 136.9 31.9 21.7
...
2023 07 25 22 48 55.8 -32 58 14 0.3489 1.3124 143.4 27.5 21.5
...
2023 08 02 22 27 40.0 -36 59 34 0.3254 1.3085 150.7 22.3 21.2
...
2023 08 17 21 25 36.6 -42 54 41 0.3087 1.2903 150.5 22.7 21.0
A. U. Tomatic (C) Copyright 2023 MPC M.P.E.C. 2023-O27
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