[Iaude] MPEC X176: 2017 YA8 [a=1.30,e=0.29,i=11.3,H=22.3]
mpec at marsden.cfa.harvard.edu
mpec at marsden.cfa.harvard.edu
Mon Dec 14 14:57:09 EST 2020
M.P.E.C. 2020-X176 Issued 2020 December 14, 19:56 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 YA8
Revision to MPEC 2018-A6
Additional Observations:
K17Y08A |C2020 12 13.29444 09 15 47.44 -21 41 40.9 22.0 GVEX176807
K17Y08A |C2020 12 13.30239 09 15 49.23 -21 41 57.3 21.7 GVEX176807
K17Y08A |C2020 12 13.30639 09 15 50.14 -21 42 05.1 21.8 GVEX176807
K17Y08A |C2020 12 13.31037 09 15 51.01 -21 42 13.4 21.9 GVEX176807
K17Y08A |C2020 12 13.31433 09 15 51.94 -21 42 21.6 22.2 GVEX176807
K17Y08A |C2020 12 14.28291 09 19 41.31 -22 15 20.7 21.4 GVEX176807
K17Y08A |C2020 12 14.28722 09 19 42.29 -22 15 29.6 22.1 GVEX176807
K17Y08A |C2020 12 14.29172 09 19 43.33 -22 15 38.8 21.9 GVEX176807
Observer details:
807 Cerro Tololo Observatory, La Serena. 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 (or two decimals in degrees), reference and Delta-T
201213 807 0.09- 0.02- 201214 807 0.09- 0.02- MPO477901 -0.04 days
Orbital elements:
2017 YA8 Earth MOID = 0.0512 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 313.05252 (2000.0) P Q
n 0.66640586 Peri. 17.44304 -0.99347864 -0.08505042
a 1.2981061 Node 157.26459 +0.06614264 -0.97239845
e 0.2880041 Incl. 11.33172 +0.09287277 -0.21727330
P 1.48 H 22.3 G 0.15 U 0
Residuals in seconds of arc
171224 F51 0.0 0.2+ 180123 807 0.5+ 0.1- 180209 691 1.4- 0.2+
171224 F51 0.0 0.3+ 180126 807 0.1+ 0.0 180209 691 1.4- 0.3+
171224 F51 0.0 0.3+ 180126 807 0.1- 0.0 180209 691 1.4- 0.3+
171226 568 0.1+ 0.1+ 180126 807 0.0 0.3+ 180508 T12 0.0 0.1-
171226 568 0.1+ 0.2+ 180128 807 0.1- 0.0 180508 T12 0.0 0.0
171231 807 0.1+ 0.0 180128 807 0.1- 0.0 180508 T12 0.0 0.0
171231 807 0.0 0.1+ 180128 807 0.1+ 0.2- 180614 T12 0.0 0.0
171231 807 0.1+ 0.0 180203 807 0.1+ 0.1- 180614 T12 0.0 0.1+
180101 807 0.3+ 0.2+ 180203 807 0.2+ 0.0 180614 T12 0.0 0.1+
180101 807 0.3+ 0.1- 180203 807 0.1+ 0.1- 180614 T12 0.0 0.0
180101 807 0.3+ 0.3- 180204 807 0.0 0.1- 201213 807 0.2- 0.0
180116 807 0.2+ 0.2+ 180204 807 0.3+ 0.3- 201213 807 0.1- 0.0
180116 807 0.0 0.4+ 180204 807 0.5+ 0.3- 201213 807 0.1+ 0.4+
180116 807 0.2+ 0.1+ 180204 291 (0.5+ 2.1-) 201213 807 0.2- 0.3+
180121 807 0.1+ 0.5+ 180204 291 0.6- 0.4- 201213 807 0.4+ 0.2+
180121 807 0.2+ 0.2+ 180204 291 0.3- 0.1+ 201214 807 0.0 0.0
180121 807 0.2- 0.4+ 180205 291 0.2- 0.0 201214 807 0.2- 0.0
180123 807 0.2+ 0.3+ 180205 291 0.1+ 0.1+ 201214 807 0.1- 0.1+
180123 807 0.6+ 0.0 180205 291 0.2- 0.2+
Ephemeris:
2017 YA8 a,e,i = 1.30, 0.29, 11 q = 0.9242
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2020 11 14 07 47 01.6 -06 59 03 0.5346 1.2681 108.9 47.6 23.2
...
2020 11 29 08 27 41.2 -13 59 44 0.4279 1.2006 109.8 50.6 22.7
...
2020 12 07 08 52 56.6 -18 11 48 0.3777 1.1643 109.0 53.1 22.5
...
2020 12 13 09 14 38.1 -21 31 44 0.3432 1.1372 107.8 55.5 22.3
2020 12 14 09 18 32.9 -22 05 44 0.3377 1.1327 107.5 56.0 22.2
2020 12 15 09 22 33.6 -22 39 54 0.3323 1.1283 107.2 56.4 22.2
...
2020 12 21 09 49 01.2 -26 06 21 0.3018 1.1018 105.1 59.5 22.0
...
2020 12 29 10 32 34.5 -30 34 13 0.2665 1.0677 101.2 64.6 21.9
...
2021 01 13 12 29 23.4 -36 10 46 0.2217 1.0094 90.3 77.0 21.7
A. U. Tomatic (C) Copyright 2020 MPC M.P.E.C. 2020-X176
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