MPEC 2017-M42 : 2015 YC1
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M.P.E.C. 2017-M42 Issued 2017 June 23, 00:25 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 YC1
Revision to MPEC 2015-Y41
Additional Observations:
K15Y01C C2017 06 21.25928211 50 31.102-00 45 29.44 23.5 GUEM042T14
K15Y01C C2017 06 21.26212211 50 33.763-00 45 32.63 23.4 GUEM042T14
K15Y01C C2017 06 21.26496011 50 36.429-00 45 35.86 23.0 GUEM042T14
K15Y01C C2017 06 21.26779611 50 39.085-00 45 39.04 22.9 GUEM042T14
K15Y01C C2017 06 21.27063511 50 41.764-00 45 42.26 23.5 GUEM042T14
K15Y01C C2017 06 22.26116712 06 43.078-01 04 12.15 23.8 GUEM042T14
K15Y01C C2017 06 22.26296212 06 44.742-01 04 14.10 23.4 GUEM042T14
Observer details:
T14 Mauna Kea-UH/Tholen NEO Follow-Up (CFHT). Observers L. Wells,
D. Woodworth. Measurer D. J. Tholen. 3.6-m Canada-France-Hawaii
Telescope.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
170621 T14 0.11- 0.01+ 170622 T14 0.13- 0.01+ MPO369303 +0.039 day
Orbital elements:
2015 YC1 Earth MOID = 0.0030 AU
Epoch 2017 Sept. 4.0 TT = JDT 2458000.5 MPC
M 127.13489 (2000.0) P Q
n 0.87328997 Peri. 267.89023 -0.98791682 -0.10315249
a 1.0840028 Node 266.17477 +0.14053836 -0.91088175
e 0.2559720 Incl. 6.65726 -0.06534006 -0.39956727
P 1.13 H 26.0 G 0.15 U 2
Residuals in seconds of arc
151218 703 0.2+ 0.1+ 151219 I52 0.1- 0.2- 151220 926 0.0 0.1+
151218 703 0.6- 0.1- 151219 I52 0.1- 0.1- 151220 J95 0.0 0.2-
151218 703 0.1- 0.1+ 151219 926 0.2+ 0.2+ 151220 J95 0.1- 0.3+
151218 703 0.7- 1.1- 151219 926 0.1+ 0.2- 151220 J95 0.1+ 0.2-
151218 703 0.1+ 0.1+ 151219 926 0.4- 0.3+ 151221 926 0.2- 0.2+
151218 703 0.2- 0.0 151219 H01 0.0 0.1- 151221 926 0.0 0.9+
151218 703 0.6- 1.0- 151219 695 0.3+ 0.6+ 151221 926 0.5- 0.5+
151218 703 0.1- 0.1- 151219 695 0.4+ 0.7+ 151221 926 0.3- 0.0
151218 703 0.1- 0.2- 151219 850 0.5+ 0.5+ 151221 926 0.4- 0.2+
151218 703 0.0 0.3+ 151219 695 0.4+ 0.8+ 151221 926 0.5- 0.3-
151218 703 0.4+ 0.3- 151219 695 0.3+ 0.8+ 151221 926 0.2+ 0.5+
151218 703 0.3- 0.1+ 151219 H01 0.2+ 0.1- 151221 926 0.1+ 0.6+
151218 291 0.0 0.5+ 151219 H01 0.1+ 0.2- 151221 926 0.0 0.2+
151218 291 0.1+ 0.5+ 151219 850 0.5- 0.9- 151221 926 0.5+ 0.1-
151218 291 0.0 0.4+ 151219 H01 0.0 0.2- 151221 926 0.2+ 0.5+
151218 I52 0.1- 0.0 151219 926 0.0 0.1+ 151221 926 0.0 0.1-
151218 I52 0.4- 0.1- 151219 926 0.4- 0.2+ 151221 926 0.1- 0.0
151218 I52 0.3- 0.1- 151219 926 0.2+ 0.1- 151221 926 0.1+ 0.6-
151218 I52 0.2- 0.0 151219 850 (3.3- 1.9+) 151221 926 0.8+ 0.4-
151218 300 1.5+ 0.0 151219 850 (4.3- 4.4+) 151222 926 0.2- 0.2-
151218 300 0.6+ 0.2- 151219 300 0.2+ 0.3+ 151222 926 0.3+ 0.0
151218 300 0.8+ 0.3- 151219 300 0.0 0.7+ 151222 926 0.5- 0.4-
151218 300 0.6+ 0.4- 151219 300 0.5+ 0.1+ 151222 926 0.3- 0.3+
151218 300 0.6+ 0.6- 151219 300 0.4+ 0.1+ 151222 926 0.3+ 0.0
151218 G40 0.2+ 0.0 151219 900 0.1- 0.6- 151222 926 0.2+ 0.3+
151218 G40 0.2+ 0.4+ 151219 900 0.1- 0.1- 170621 T14 0.1+ 0.0
151218 G40 0.1+ 0.1- 151219 900 0.0 0.0 170621 T14 0.0 0.0
151219 I93 0.3- 0.3- 151220 204 0.7- 1.2- 170621 T14 0.0 0.0
151219 I93 0.1+ 0.2- 151220 204 0.6- 1.0- 170621 T14 0.1- 0.0
151219 I93 0.2+ 0.2- 151220 204 0.6- 0.9- 170621 T14 0.1+ 0.1-
151219 I93 0.1+ 0.3- 151220 204 0.7- 1.3- 170622 T14 0.1- 0.1-
151219 I93 0.1+ 0.3- 151220 204 0.6- 1.0- 170622 T14 0.1- 0.0
151219 I93 0.3+ 0.2- 151220 926 0.2- 0.3+
151219 I52 0.0 0.1- 151220 926 0.3- 0.1+
Ephemeris:
2015 YC1 a,e,i = 1.08, 0.26, 7 q = 0.8065
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2017 05 24 07 12 21.7 +05 17 27 0.1888 0.8986 48.4 122.5 27.2
...
2017 06 08 08 49 49.2 +02 51 12 0.1137 0.9597 58.1 116.2 25.8
...
2017 06 16 10 27 28.9 +00 53 24 0.08954 0.9943 73.6 101.4 24.4
...
2017 06 22 12 02 32.9 -00 58 45 0.08549 1.0205 90.4 84.8 23.7
2017 06 23 12 18 33.9 -01 17 04 0.08622 1.0249 93.3 81.9 23.6
2017 06 24 12 34 16.0 -01 34 47 0.08734 1.0293 96.0 79.1 23.5
...
2017 06 30 13 56 53.1 -03 02 46 0.1013 1.0554 109.9 65.0 23.4
...
2017 07 08 15 11 31.1 -04 17 11 0.1336 1.0895 120.0 53.9 23.8
...
2017 07 23 16 26 32.2 -05 52 32 0.2145 1.1503 124.2 46.9 24.7
A. U. Tomatic (C) Copyright 2017 MPC M.P.E.C. 2017-M42
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