[Iaude] MPEC J254: 2021 KE2 [a=2.12,e=0.46,i=40.2,H=19.99]
mpec at cfa.harvard.edu
mpec at cfa.harvard.edu
Fri May 10 10:16:07 EDT 2024
M.P.E.C. 2024-J254 Issued 2024 May 10, 14:14 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 at CFA.HARVARD.EDU
URL https://www.minorplanetcenter.net/ ISSN 1523-6714
2021 KE2
Revision to MPEC 2021-K78
Additional Observations:
K21K02E C2016 01 09.39016205 27 17.519-03 41 00.68 23.06GVEJ254F51
K21K02E C2016 01 09.41384605 27 15.843-03 40 30.89 23.43GVEJ254F51
K21K02E C2016 01 11.35308005 25 05.687-03 00 01.73 22.64GVEJ254F51
K21K02E C2016 01 11.36568705 25 04.822-02 59 45.99 23.26GVEJ254F51
K21K02E C2016 01 12.28760805 24 05.916-02 40 30.69 23.69GVEJ254F51
K21K02E C2016 01 12.30127505 24 05.009-02 40 14.02 23.19GVEJ254F51
K21K02E KC2018 12 31.37726604 52 29.040-15 31 29.78 23.67GVEJ254F51
K21K02E KC2019 01 07.34660904 45 22.836-12 27 19.64 22.87GVEJ254F51
K21K02E KC2019 01 25.32188804 36 10.904-04 47 39.15 23.34GVEJ254F52
K21K02E KC2024 05 09.40790719 00 53.737+34 47 46.61 21.84GVEJ254V06
K21K02E KC2024 05 09.41271019 00 53.982+34 47 49.02 21.98GVEJ254V06
K21K02E KC2024 05 09.41748319 00 54.234+34 47 51.36 VEJ254V06
K21K02E KC2024 05 09.42225519 00 54.475+34 47 53.81 22.07GVEJ254V06
Observer details:
F51 Pan-STARRS 1, Haleakala. Observers J. Herman, T. Lowe, P. Minguez, A.
Schultz, I. Smith. Measurers K. Chambers, T. de Boer, J. Fairlamb, H.
Gao, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo, R. Wainscoat, R.
Weryk. 1.8-m Ritchey-Chretien + CCD.
F52 Pan-STARRS 2, Haleakala. Observers J. Herman, T. Lowe, P. Minguez, A.
Schultz, I. Smith. Measurers K. Chambers, T. de Boer, J. Fairlamb, H.
Gao, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo, R. Wainscoat, R.
Weryk. 1.8-m Ritchey-Chretien + CCD.
V06 Catalina Sky Survey-Kuiper. Observer H. Groeller. Measurers T. Beuden,
V. F. Carvajal, D. Fay, J. B. Fazekas, D. C. Fuls, A. R. Gibbs, A. D.
Grauer, H. Groeller, J. K. Hogan, R. A. Kowalski, S. M. Larson, G. J.
Leonard, D. Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos. 1.55-m
reflector + 1K CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
160109 F51 0.11- 0.08- 240509 V06 0.14- 0.10- E2024-BH3 +0.04 days
Orbital elements:
2021 KE2 Earth MOID = 0.1560 AU
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5 Veres
M 316.44344 (2000.0) P Q
n 0.31944625 Peri. 205.59313 +0.65821242 +0.46346868
a 2.1193573 Node 113.16768 -0.53073520 +0.84456271
e 0.4623322 Incl. 40.18777 -0.53392562 -0.26816154
P 3.09 H 19.99 G 0.15 U 1
Residuals in seconds of arc
160109 F51 0.2- 0.0 210522 807 0.1- 0.1- 210607 G96 0.1- 0.3+
160109 F51 0.1+ 0.1+ 210522 807 0.0 0.2- 210607 G96 0.0 0.2+
160111 F51 0.2+ 0.0 210522 V06 0.1+ 0.1+ 210607 G96 0.1- 0.2-
160111 F51 0.1- 0.1- 210522 807 0.0 0.2- 210611 I52 0.1+ 0.3-
160112 F51 0.0 0.2+ 210522 V06 0.0 0.0 210611 I52 0.1- 0.3-
160112 F51 0.2- 0.2- 210522 V06 0.0 0.0 210611 I52 0.3- 0.1+
181231 F51 0.1+ 0.1+ 210522 V06 0.1+ 0.4- 210611 I52 0.1- 0.2-
190107 F51 0.0 0.2+ 210522 H01 0.1+ 0.1- 210615 I52 0.5- 0.3-
190125 F52 0.3+ 0.5- 210522 H01 0.0 0.0 210615 I52 0.8+ 1.3+
210519 V00 0.0 0.1- 210522 H01 0.0 0.2+ 210615 I52 0.8+ 1.4+
210519 V00 0.0 0.1+ 210523 V06 0.2- 0.0 210622 I52 0.1- 1.2-
210519 V00 0.3- 0.1- 210523 V06 0.8+ 0.4+ 210622 I52 0.3+ 0.3-
210519 V00 0.1- 0.0 210523 V06 0.1+ 0.2+ 211111 807 0.1- 0.2-
210519 291 0.3- 0.1+ 210602 I52 1.0- 0.2+ 211111 807 0.2- 0.2-
210519 291 0.2- 0.3+ 210602 I52 (1.0- 0.7-) 211111 807 0.3+ 0.3+
210519 291 0.0 0.2- 210605 I52 0.0 0.7- 240509 V06 0.1- 0.0
210520 V00 0.0 0.0 210605 I52 0.3+ 0.1- 240509 V06 0.1- 0.0
210520 V00 0.0 0.0 210605 I52 0.1- 0.3- 240509 V06 0.0 0.1-
210520 V00 0.1+ 0.1- 210607 G96 0.0 0.7+ 240509 V06 0.1- 0.0
Ephemeris:
2021 KE2 a,e,i = 2.12, 0.46, 40 q = 1.1395
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2024 04 10 18 24 48.0 +29 50 03 1.2520 1.6932 96.8 36.0 23.1
...
2024 04 25 18 45 16.9 +32 32 08 1.0805 1.6008 100.2 38.2 22.7
...
2024 05 03 18 54 30.8 +33 51 19 0.9885 1.5519 102.0 39.4 22.5
...
2024 05 09 19 00 30.9 +34 44 25 0.9190 1.5156 103.5 40.4 22.3
2024 05 10 19 01 25.8 +34 52 34 0.9074 1.5096 103.8 40.5 22.3
2024 05 11 19 02 19.3 +35 00 28 0.8957 1.5036 104.0 40.7 22.2
...
2024 05 17 19 07 07.7 +35 42 11 0.8255 1.4679 105.7 41.6 22.0
...
2024 05 25 19 11 59.2 +36 18 16 0.7310 1.4215 108.1 42.6 21.7
...
2024 06 09 19 15 20.3 +35 45 28 0.5515 1.3391 114.2 43.8 21.0
A. U. Tomatic (C) Copyright 2024 MPC M.P.E.C. 2024-J254
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