[Iaude] MPEC J12: 2020 HX9 [a=1.22,e=0.32,i=16.2,H=23.37]
mpec at cfa.harvard.edu
mpec at cfa.harvard.edu
Wed May 1 10:14:37 EDT 2024
M.P.E.C. 2024-J12 Issued 2024 May 1, 14:13 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
2020 HX9
Revision to MPEC 2020-J08
Additional Observations:
K20H09X C2011 10 19.48687902 45 38.940+37 20 04.22 20.75GVEJ012F51
K20H09X C2011 10 19.49916502 45 39.762+37 19 32.25 21.50GVEJ012F51
K20H09X C2011 10 25.59557702 56 23.267+31 02 41.31 19.39GVEJ012F51
K20H09X KC2024 04 30.20994810 31 56.327-02 47 55.82 21.60GVEJ012I52
K20H09X KC2024 04 30.21157610 31 57.292-02 47 47.58 20.36GVEJ012I52
K20H09X KC2024 04 30.21320110 31 58.296-02 47 40.60 20.41GVEJ012I52
K20H09X KC2024 04 30.21483510 31 59.315-02 47 32.89 VEJ012I52
K20H09X C2024 05 01.27472910 42 55.041-01 29 53.09 20.83wXEJ012F51
K20H09X C2024 05 01.29712510 43 07.948-01 28 18.07 20.62wXEJ012F51
K20H09X C2024 05 01.30829310 43 14.392-01 27 30.72 21.28wXEJ012F51
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.
I52 Steward Observatory, Mt. Lemmon Station. Observers V. F. Carvajal, G. J.
Leonard. 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. 1.0-m prime focus + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
111019 F51 3.49- 0.06- 240501 F51 1.65- 0.29- E2023-P50 +0.32 days
Orbital elements:
2020 HX9 Earth MOID = 0.0567 AU
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5 Veres
M 30.67655 (2000.0) P Q
n 0.73258417 Peri. 266.50912 -0.55144474 -0.81582905
a 1.2187025 Node 218.67180 +0.83222124 -0.52359435
e 0.3172222 Incl. 16.18376 +0.05758901 -0.24550339
P 1.35 H 23.37 G 0.15 U 0
Residuals in seconds of arc
111019 F51 0.1+ 0.0 200430 F51 0.0 0.4+ 200504 I52 1.0- 0.0
111019 F51 0.0 0.0 200430 F51 0.1+ 0.0 200504 I52 0.2- 0.1+
111025 F51 0.1- 0.2- 200501 I52 0.1+ 0.7- 200512 F51 0.2+ 0.0
200428 F51 0.2+ 0.1+ 200501 I52 0.2- 0.5+ 200512 F51 0.1+ 0.3+
200428 F51 0.2- 0.5+ 200501 I52 0.2+ 0.1+ 200512 F51 0.0 0.1+
200428 F51 0.1+ 0.1+ 200501 F51 0.1+ 0.1- 200513 I52 0.1+ 0.1-
200429 I52 0.2+ 0.7+ 200501 F51 0.1+ 0.0 200513 I52 0.2- 0.1+
200429 I52 0.0 0.3+ 200501 F51 0.1+ 0.0 200513 I52 0.6- 0.6-
200429 I52 0.1- 0.1+ 200501 F51 0.0 0.0 200529 F51 0.1+ 0.1-
200429 474 0.2- 0.2- 200501 F51 0.3+ 0.0 240430 I52 0.4+ 0.8-
200429 474 0.3- 0.2- 200501 F51 0.1- 0.1+ 240430 I52 0.2- 0.1+
200429 474 0.6+ 0.2+ 200503 G96 0.2- 0.0 240430 I52 0.1- 0.3-
200429 474 0.9+ 0.2+ 200503 G96 0.1- 0.1+ 240430 I52 0.1+ 0.0
200430 I52 0.2- 0.6- 200503 G96 0.3+ 0.1- 240501 F51 0.1- 0.1+
200430 I52 0.6- 0.7- 200504 I52 0.2+ 0.0 240501 F51 0.1- 0.1+
200430 I52 0.0 0.5- 200504 I52 0.3+ 0.2- 240501 F51 0.0 0.1+
Ephemeris:
2020 HX9 a,e,i = 1.22, 0.32, 16 q = 0.8321
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2024 04 01 04 48 41.6 -27 06 21 0.1984 0.9408 67.3 101.4 23.4
...
2024 04 16 07 21 40.4 -22 01 36 0.1303 1.0125 90.3 82.3 21.9
...
2024 04 24 09 15 56.7 -11 38 03 0.1252 1.0534 109.2 64.4 21.3
...
2024 04 30 10 29 43.3 -03 03 19 0.1415 1.0846 119.8 53.7 21.3
2024 05 01 10 40 08.6 -01 49 10 0.1457 1.0898 121.0 52.4 21.3
2024 05 02 10 50 01.4 -00 39 26 0.1503 1.0950 122.1 51.3 21.3
...
2024 05 08 11 39 02.7 +04 46 52 0.1835 1.1262 125.7 46.7 21.7
...
2024 05 16 12 24 00.2 +08 45 42 0.2388 1.1675 126.0 44.5 22.3
...
2024 05 31 13 15 55.5 +10 55 47 0.3611 1.2424 121.7 43.9 23.3
A. U. Tomatic (C) Copyright 2024 MPC M.P.E.C. 2024-J12
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