MPEC 2017-Y157: 2017 YE7
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M.P.E.C. 2017-Y157 Issued 2017 Dec. 30, 19:29 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
2017 YE7
Observations:
K17Y07E* C2017 12 28.27911 07 00 21.35 +29 09 09.3 20.8 GUEY157G96
K17Y07E C2017 12 28.28953 07 00 24.84 +29 09 03.4 21.0 GUEY157G96
K17Y07E C2017 12 28.29475 07 00 26.66 +29 08 59.9 21.1 GUEY157G96
K17Y07E C2017 12 28.35683 07 00 48.25 +29 08 07.5 20.9 GUEY157I52
K17Y07E C2017 12 28.35931 07 00 49.14 +29 08 04.8 21.2 GUEY157I52
K17Y07E C2017 12 28.36180 07 00 50.04 +29 08 02.0 21.3 GUEY157I52
K17Y07E C2017 12 28.36428 07 00 50.90 +29 07 59.6 20.9 GUEY157I52
K17Y07E C2017 12 28.44588 07 01 22.11 +29 06 18.9 21.1 RoEY157926
K17Y07E C2017 12 28.45133 07 01 24.41 +29 06 10.3 21.0 RoEY157926
K17Y07E C2017 12 28.45678 07 01 26.78 +29 06 03.6 21.1 RoEY157926
K17Y07E C2017 12 29.23166 07 12 15.89 +28 45 21.0 20.1 RoEY157926
K17Y07E C2017 12 29.23451 07 12 18.88 +28 45 16.2 20.5 RoEY157926
K17Y07E C2017 12 29.23737 07 12 21.89 +28 45 10.4 20.3 RoEY157926
K17Y07E C2017 12 29.24824 07 12 33.09 +28 44 41.4 19.8 GUEY157I52
K17Y07E C2017 12 29.24878 07 12 33.64 +28 44 40.5 20.0 GUEY157I52
K17Y07E C2017 12 29.24933 07 12 34.20 +28 44 39.3 20.2 GUEY157I52
K17Y07E C2017 12 29.24988 07 12 34.79 +28 44 37.8 20.5 GUEY157I52
K17Y07E C2017 12 30.21368 08 05 37.53 +26 06 38.0 17.9 RoEY157926
K17Y07E C2017 12 30.21438 08 05 43.33 +26 06 17.3 18.4 RoEY157926
K17Y07E C2017 12 30.21506 08 05 49.05 +26 05 56.4 18.7 RoEY157926
K17Y07E C2017 12 30.21573 08 05 54.73 +26 05 36.2 18.1 RoEY157926
K17Y07E C2017 12 30.21640 08 06 00.39 +26 05 15.9 17.7 RoEY157926
K17Y07E C2017 12 30.21709 08 06 06.20 +26 04 55.0 17.7 RoEY157926
Observer details:
926 Tenagra II Observatory. Observers M. Schwartz, P. R. Holvorcem. Measurer
M. Schwartz. 0.81-m f/7 Ritchey-Chretien + CCD.
G96 Mt. Lemmon Survey. Observer D. C. Fuls. Measurers E. J. Christensen,
D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson, R. A. Kowalski,
S. M. Larson, G. J. Leonard, R. G. Matheny, R. L. Seaman, F. C. Shelly.
1.5-m reflector + 10K CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer R. G. Matheny.
Measurers E. J. Christensen, D. C. Fuls, A. R. Gibbs, A. D. Grauer,
J. A. Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard, R. G. Matheny,
R. L. Seaman, F. C. Shelly. 1.0-m reflector + CCD.
Orbital elements:
2017 YE7 Earth MOID = 0.0002 AU
Epoch 2017 Sept. 4.0 TT = JDT 2458000.5 MPC
M 294.38959 (2000.0) P Q
n 0.39910895 Peri. 268.11901 -0.98941668 +0.12465377
a 1.8270134 Node 279.03645 -0.08397738 -0.90934127
e 0.6704497 Incl. 4.31292 -0.11833183 -0.39693815
P 2.47 H 28.5 G 0.15 U 6
Residuals in seconds of arc
171228 G96 0.3- 0.0 171228 926 0.1- 0.4+ 171229 I52 0.1- 0.2-
171228 G96 1.0- 0.4+ 171228 926 (0.8+ 2.3+) 171230 926 0.6- 0.5+
171228 G96 0.4- 0.2+ 171229 926 0.1- 0.2- 171230 926 1.2- 0.7+
171228 I52 0.6+ 0.2- 171229 926 0.1+ 0.3+ 171230 926 0.8- 0.2+
171228 I52 0.7+ 0.4- 171229 926 0.3+ 0.1- 171230 926 0.1+ 0.1+
171228 I52 0.8+ 0.6- 171229 I52 0.3+ 0.1+ 171230 926 0.5+ 0.0
171228 I52 0.4+ 0.3- 171229 I52 0.0 0.3+ 171230 926 0.6+ 0.0
171228 926 0.4- 0.4+ 171229 I52 0.2- 0.2+
Ephemeris:
2017 YE7 a,e,i = 1.83, 0.67, 4 q = 0.6021
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2017 11 30 06 36 05.0 +29 06 08 0.3812 1.3283 149.3 22.3 28.1
...
2017 12 15 06 43 15.2 +29 24 14 0.1863 1.1632 162.3 14.9 26.0
...
2017 12 23 06 47 19.4 +29 27 52 0.09020 1.0723 168.7 10.3 24.1
...
2017 12 29 07 07 55.4 +28 54 50 0.02028 1.0034 170.0 9.8 20.7
2017 12 30 07 42 00.0 +27 28 14 0.0088300.9919 164.5 15.4 19.1
2017 12 31 16 06 29.3 -27 14 26 0.0036390.9803 34.9 145.0 23.8
...
2018 01 06 18 35 53.7 -29 42 54 0.07288 0.9116 9.9 169.3
...
2018 01 14 18 41 19.5 -29 25 11 0.1691 0.8222 15.8 161.0
...
2018 01 29 18 53 39.6 -28 21 20 0.3733 0.6759 27.4 137.8 32.1
A. U. Tomatic (C) Copyright 2017 MPC M.P.E.C. 2017-Y157
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