[Iaude] MPEC X26: 2017 HC49 [a=0.85,e=0.45,i=29.9,H=22.28]
mpec at marsden.cfa.harvard.edu
mpec at marsden.cfa.harvard.edu
Mon Dec 4 09:09:08 EST 2023
M.P.E.C. 2023-X26 Issued 2023 December 4, 14:07 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
2017 HC49
Revision to MPEC 2017-J6
Additional Observations:
K17H49C C2010 04 18.47539114 39 45.207-08 30 55.17 19.55GVEX026F51
K17H49C C2010 04 18.48458014 39 40.380-08 31 22.97 19.69GVEX026F51
K17H49C S2010 05 26.25129309 49 48.38 -24 25 28.3 WEX026C51
K17H49C s2010 05 26.2512931 - 5729.2163 + 2793.4092 - 2670.7573 EX026C51
K17H49C S2010 05 26.58211609 48 47.83 -24 26 26.7 WEX026C51
K17H49C s2010 05 26.5821161 - 5753.7630 + 2770.4054 - 2642.2806 EX026C51
K17H49C S2010 05 26.64820509 48 35.89 -24 26 39.8 WEX026C51
K17H49C s2010 05 26.6482051 - 5744.6393 + 2750.9652 - 2682.1839 EX026C51
K17H49C S2010 05 26.84659709 48 00.19 -24 27 15.1 WEX026C51
K17H49C s2010 05 26.8465971 - 5740.8156 + 2717.5795 - 2724.6088 EX026C51
Observer details:
C51 WISE. Observer . Measurer S. Deen.
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, K. Chambers, T. Lowe, A.
Schultz, I. Smith. Measurers S. Chastel, J. Fairlamb, M. Huber, Y.
Ramanjooloo, P. VanWylen, R. Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien
+ CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
100418 F51 66.0+ 77.5+ 100526 C51 41.1+ 53.5+ MPO724772 +0.00 days
Orbital elements:
2017 HC49 Earth MOID = 0.1755 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5 Veres
M 270.82121 (2000.0) P Q
n 1.26392045 Peri. 347.68958 +0.92456252 -0.27211602
a 0.8472070 Node 32.29735 +0.37800922 +0.56707628
e 0.4495741 Incl. 29.94536 +0.04788704 +0.77741711
P 0.78 H 22.28 G 0.15 U 1
Residuals in seconds of arc
100418 F51 0.3+ 0.1- 170429 T12 0.1+ 0.0 170501 926 0.3+ 0.2-
100418 F51 0.3+ 0.1- 170429 T12 0.0 0.0 170502 926 0.5+ 0.3+
100526 C51 0.6- 0.8- 170429 T12 0.0 0.0 170502 I52 0.4- 0.1-
100526 C51 0.8- 1.8+ 170429 T12 0.1+ 0.1+ 170502 926 0.6- 0.4-
100526 C51 0.3- 0.6+ 170429 807 0.3- 0.3+ 170502 I52 0.0 0.0
100526 C51 0.0 1.0+ 170429 807 0.1- 0.0 170502 I52 0.7+ 0.4+
170322 F51 0.2- 0.0 170429 807 0.1+ 0.2- 170502 I52 0.5- 0.3+
170401 F51 0.1- 0.0 170430 691 0.3- 0.3- 170503 I52 0.2- 0.5+
170407 F51 0.7+ 0.3+ 170430 691 0.5- 0.2- 170503 I52 0.1+ 0.2+
170407 F51 0.1- 0.2+ 170430 691 1.0- 0.7- 170503 I52 0.5- 0.1-
170407 F51 0.2- 0.4+ 170430 I52 0.5+ 0.2- 170503 I52 0.4- 0.1+
170427 F51 0.2- 0.0 170430 I52 0.9+ 0.2+ 170504 291 0.1+ 0.3+
170427 F51 0.1+ 0.0 170430 I52 0.5+ 0.1+ 170504 291 0.4- 0.4-
170427 F51 0.2- 0.0 170430 I52 0.3+ 0.2- 170504 291 0.1- 0.2-
170427 F51 0.3- 0.1+ 170501 291 0.8+ 0.2- 170522 807 1.2+ 0.2-
170428 568 0.2+ 0.0 170501 291 0.2- 0.1+ 170522 807 0.3+ 0.2-
170428 568 0.2+ 0.0 170501 291 0.2+ 1.4- 170522 807 0.5+ 0.0
170428 568 0.2+ 0.1+ 170501 926 0.3- 0.2+
170429 T12 0.0 0.0 170501 926 0.0 0.2-
Ephemeris:
2017 HC49 a,e,i = 0.85, 0.45, 30 q = 0.4663
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 11 04 16 17 47.6 -36 07 41 1.0588 0.5556 31.2 67.7 23.5
...
2023 11 19 17 24 39.1 -30 53 41 0.7550 0.4702 27.3 105.2 23.9
...
2023 11 27 17 40 42.0 -21 47 17 0.6137 0.4723 21.4 130.2 25.3
...
2023 12 03 17 38 47.8 -12 16 22 0.5453 0.4978 18.2 141.8 26.6
2023 12 04 17 37 29.5 -10 35 08 0.5378 0.5037 18.2 142.3 26.6
2023 12 05 17 35 57.9 -08 53 51 0.5314 0.5099 18.4 142.3 26.6
...
2023 12 11 17 23 39.3 +00 39 12 0.5146 0.5545 23.8 134.1 25.7
...
2023 12 19 17 05 30.5 +10 02 20 0.5326 0.6252 34.8 116.2 24.5
...
2024 01 03 16 44 40.6 +17 43 28 0.5980 0.7649 51.0 91.5 23.8
A. U. Tomatic (C) Copyright 2023 MPC M.P.E.C. 2023-X26
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