MPEC 2018-H28 : 2015 HE170
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M.P.E.C. 2018-H28 Issued 2018 Apr. 18, 11:41 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@CFA.HARVARD.EDU
URL https://www.minorplanetcenter.net/ ISSN 1523-6714
2015 HE170
Revision to MPEC 2015-H137
Additional Observations:
K15HH0E |C2018 04 17.00685 11 20 22.06 -05 24 19.8 22.9 GUEH028807
K15HH0E |C2018 04 17.01666 11 20 22.17 -05 24 05.2 22.8 GUEH028807
K15HH0E |C2018 04 17.02746 11 20 22.30 -05 23 49.0 22.8 GUEH028807
K15HH0E |C2018 04 17.03742 11 20 22.42 -05 23 34.3 22.9 GUEH028807
K15HH0E |C2018 04 18.01037 11 20 43.39 -04 59 33.8 22.8 GUEH028807
K15HH0E |C2018 04 18.02569 11 20 43.63 -04 59 11.0 22.8 GUEH028807
K15HH0E |C2018 04 18.04100 11 20 43.88 -04 58 48.2 22.9 GUEH028807
Observer details:
807 Cerro Tololo. Observers T. Linder, R. Holmes. 1.00-m f/10.0 astrograph
+ CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
180417 807 45.7- 15.2+ 180418 807 45.3- 15.1+ MPO349338 +0.0058 day
Orbital elements:
2015 HE170 Earth MOID = 0.2057 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5 MPC
M 335.60118 (2000.0) P Q
n 0.32408240 Peri. 26.83032 -0.49700999 +0.86350060
a 2.0990966 Node 213.56633 -0.82138198 -0.50001155
e 0.4258664 Incl. 8.91883 -0.27984408 -0.06599372
P 3.04 H 23.4 G 0.15 U 0
Residuals in seconds of arc
150425 F51 0.2+ 0.2+ 150427 807 0.2- 0.4- 150607 H21 0.1+ 0.3+
150425 F51 0.1+ 0.1+ 150427 926 0.1+ 0.5- 150607 H21 0.3+ 0.3+
150425 F51 0.1+ 0.2+ 150427 807 0.2- 0.1- 150607 H21 0.2+ 0.4+
150425 F51 0.1+ 0.1+ 150427 926 0.2+ 0.3- 150612 H21 0.4- 0.0
150425 F51 0.0 0.1- 150430 926 0.2+ 0.5- 150612 H21 0.3- 0.1+
150425 F51 0.2- 0.2+ 150430 926 0.2+ 0.1- 150612 H21 0.5- 0.2-
150425 F51 0.0 0.0 150508 705 0.2- 0.0 150722 568 0.0 0.0
150426 568 0.2- 0.1+ 150508 705 0.0 0.3+ 150722 568 0.0 0.0
150426 568 0.2- 0.1+ 150508 705 0.2- 0.1- 180417 807 0.2- 0.4-
150426 568 0.2- 0.1+ 150510 926 0.2- 0.4- 180417 807 0.2- 0.2-
150427 W86 0.3- 0.0 150510 926 0.3+ 0.1+ 180417 807 0.1- 0.1+
150427 W86 0.2- 0.2- 150510 926 0.2- 0.1+ 180417 807 0.0 0.1+
150427 W86 0.5- 0.0 150513 807 0.1+ 0.5- 180418 807 0.2- 0.5-
150427 807 0.1- 0.4- 150513 807 0.1+ 0.1- 180418 807 0.1- 0.3-
150427 926 0.2+ 0.1+ 150513 807 0.2+ 0.1- 180418 807 0.3+ 0.2-
Ephemeris:
2015 HE170 a,e,i = 2.10, 0.43, 9 q = 1.2052
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2018 03 19 11 29 01.4 -14 46 31 0.4527 1.4351 163.4 11.4 23.2
...
2018 04 03 11 21 07.3 -10 46 51 0.3855 1.3645 157.9 16.0 22.9
...
2018 04 11 11 19 28.9 -07 49 54 0.3623 1.3304 150.9 21.5 22.9
...
2018 04 17 11 20 21.1 -05 24 41 0.3501 1.3069 145.3 25.9 22.9
2018 04 18 11 20 42.4 -05 00 01 0.3484 1.3032 144.4 26.7 22.9
2018 04 19 11 21 07.5 -04 35 17 0.3469 1.2995 143.5 27.4 22.9
...
2018 04 25 11 25 02.5 -02 07 47 0.3395 1.2786 138.0 31.7 22.9
...
2018 05 03 11 34 08.3 +00 58 48 0.3344 1.2543 131.4 37.1 23.0
...
2018 05 18 12 02 56.4 +05 41 03 0.3362 1.2211 121.5 44.9 23.2
A. U. Tomatic (C) Copyright 2018 MPC M.P.E.C. 2018-H28
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