[Iaude] MPEC A112: 2017 HR49 [a=2.34,e=0.47,i=8.1,H=18.8]
mpec at mpcdb1.cfa.harvard.edu
mpec at mpcdb1.cfa.harvard.edu
Mon Jan 7 12:25:17 EST 2019
M.P.E.C. 2019-A112 Issued 2019 Jan. 7, 17:21 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. 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 HR49
Revision to MPEC 2017-J24
Additional Observations:
K17H49R C2018 12 13.56062009 15 16.322+19 14 56.11 23.70GVEA112T12
K17H49R C2018 12 13.57220309 15 16.081+19 14 58.86 24.16GVEA112T12
K17H49R C2019 01 03.56668809 02 46.653+21 01 30.30 23.99GVEA112T12
K17H49R C2019 01 03.57761509 02 46.078+21 01 34.15 23.85GVEA112T12
Observer details:
T12 Mauna Kea-UH/Tholen NEO Follow-Up (2.24-m). Observers D. Hung,
D. J. Tholen. Measurer D. J. Tholen. 2.24-m f/10.1 reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
181213 T12 8.3+ 2.4- 190103 T12 9.9+ 2.6- MPO419559 +0.0022 day
Orbital elements:
2017 HR49 Earth MOID = 0.2538 AU
Epoch 2019 Apr. 27.0 TT = JDT 2458600.5 MPC
M 145.15873 (2000.0) P Q
n 0.27554126 Peri. 229.61329 +0.87725733 +0.45990091
a 2.3388999 Node 102.59815 -0.38656728 +0.84669630
e 0.4698152 Incl. 8.10044 -0.28457917 +0.26757529
P 3.58 H 18.8 G 0.15 U 3
Residuals in seconds of arc
170428 F51 0.1+ 0.1- 170502 691 0.0 0.3+ 170516 807 0.2+ 0.1-
170428 F51 0.2+ 0.0 170502 I52 0.2- 0.7- 170516 807 0.8+ 0.4-
170428 F51 0.0 0.0 170502 I52 0.7+ 0.1- 170517 F51 0.1+ 0.0
170428 F51 0.0 0.1- 170502 I52 0.1+ 0.4+ 170517 F51 0.1+ 0.1-
170429 K93 0.0 0.3- 170503 807 0.2- 0.2+ 170517 F51 0.1+ 0.2-
170429 K93 0.1- 0.2- 170503 807 0.3- 0.2+ 170531 691 0.4- 0.0
170429 K93 0.3- 0.3- 170503 807 0.2- 0.2+ 170531 691 0.2- 0.1+
170430 691 0.2- 0.3+ 170504 691 0.1- 0.2+ 170531 691 0.1- 0.2-
170430 691 0.5+ 0.2+ 170504 691 0.1- 0.2+ 170614 H21 0.2+ 0.3+
170430 I52 0.0 0.4+ 170504 691 0.2- 0.7+ 170614 H21 0.0 0.0
170430 691 0.1- 0.0 170505 291 0.5- 0.3- 170614 H21 0.4+ 0.1+
170430 I52 0.8- 0.9+ 170505 291 1.0+ 0.7- 170917 807 0.6- 1.0-
170501 I52 0.1+ 1.9+ 170505 291 0.1+ 0.0 170917 807 0.3- 0.6-
170501 I52 0.5- 0.6+ 170506 695 0.2+ 0.2+ 170917 807 0.1- 0.1-
170501 I52 0.1+ 0.9+ 170506 695 0.0 0.3+ 181213 T12 0.1- 0.0
170501 691 0.5- 0.5- 170506 695 0.1+ 0.2+ 181213 T12 0.0 0.1-
170501 691 0.7- 0.8- 170515 807 0.0 0.1- 190103 T12 0.1+ 0.0
170501 691 0.3- 0.0 170515 807 0.1- 0.0 190103 T12 0.0 0.0
170502 691 0.1+ 0.0 170515 807 0.1+ 0.5-
170502 691 0.2- 0.0 170516 807 0.8+ 0.1-
Ephemeris:
2017 HR49 a,e,i = 2.34, 0.47, 8 q = 1.2400
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2018 12 08 09 16 40.2 +18 54 34 2.4003 3.0130 119.7 16.5 24.0
...
2018 12 23 09 11 01.5 +19 57 46 2.2707 3.0601 136.5 12.8 23.8
...
2018 12 31 09 05 39.3 +20 40 50 2.2195 3.0841 146.0 10.3 23.6
...
2019 01 06 09 00 39.8 +21 15 57 2.1914 3.1016 153.3 8.2 23.5
2019 01 07 08 59 45.6 +21 21 58 2.1877 3.1044 154.5 7.8 23.5
2019 01 08 08 58 50.3 +21 27 59 2.1842 3.1073 155.8 7.5 23.5
...
2019 01 14 08 52 57.9 +22 04 26 2.1698 3.1241 163.1 5.2 23.4
...
2019 01 22 08 44 28.3 +22 52 06 2.1677 3.1458 172.4 2.4 23.2
...
2019 02 06 08 28 09.8 +24 10 06 2.2188 3.1844 166.0 4.3 23.4
A. U. Tomatic (C) Copyright 2019 MPC M.P.E.C. 2019-A112
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