[Iaude] MPEC U187: 2017 UR4 [a=1.46,e=0.35,i=21.3,H=20.8,PHA]
mpec at mpcdb1.cfa.harvard.edu
mpec at mpcdb1.cfa.harvard.edu
Thu Oct 26 13:37:16 EDT 2017
M.P.E.C. 2017-U187 Issued 2017 Oct. 26, 17:32 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 http://www.minorplanetcenter.net/ ISSN 1523-6714
2017 UR4
Observations:
K17U04R* C2017 10 22.44617 01 24 15.491+13 03 36.28 21.7 wLEU187F51
K17U04R C2017 10 22.45783 01 24 14.352+13 03 15.08 21.5 wLEU187F51
K17U04R C2017 10 22.48108 01 24 12.042+13 02 32.63 21.5 wLEU187F51
K17U04R C2017 10 23.28626 01 22 56.42 +12 38 01.4 22.1 GUEU187G96
K17U04R C2017 10 23.29148 01 22 55.94 +12 37 52.4 21.5 GUEU187G96
K17U04R C2017 10 23.29669 01 22 55.42 +12 37 42.2 21.2 GUEU187G96
K17U04R KC2017 10 23.31683 01 22 53.42 +12 37 05.8 21.4 RoEU187291
K17U04R KC2017 10 23.32131 01 22 52.99 +12 36 57.8 21.5 RoEU187291
K17U04R KC2017 10 23.32580 01 22 52.54 +12 36 49.4 21.5 RoEU187291
K17U04R C2017 10 24.15841601 21 34.90 +12 11 18.0 21.2 GUEU187H01
K17U04R C2017 10 24.16249701 21 34.51 +12 11 10.7 21.0 GUEU187H01
K17U04R C2017 10 24.17396901 21 33.39 +12 10 49.6 21.0 GUEU187H01
K17U04R C2017 10 25.34618 01 19 43.00 +11 34 39.3 21.7 RoEU187926
K17U04R C2017 10 25.35395 01 19 42.26 +11 34 25.1 21.2 RoEU187926
K17U04R C2017 10 25.36172 01 19 41.45 +11 34 10.2 21.7 RoEU187926
K17U04R KC2017 10 26.18979801 18 25.00 +11 08 25.9 21.8 VuEU187H21
K17U04R KC2017 10 26.20373101 18 23.65 +11 08 00.0 21.6 VuEU187H21
K17U04R KC2017 10 26.21908201 18 22.17 +11 07 31.6 21.9 VuEU187H21
K17U04R KC2017 10 26.26740 01 18 17.76 +11 06 03.0 oEU187691
K17U04R KC2017 10 26.29519 01 18 15.06 +11 05 11.0 oEU187691
K17U04R KC2017 10 26.32321 01 18 12.38 +11 04 18.5 oEU187691
Observer details:
291 LPL/Spacewatch II. Observer M. T. Read. 1.8-m f/2.7 reflector + CCD.
691 Steward Observatory, Kitt Peak. Observer M. T. Read. 0.9-m f/3 reflector
+ CCD.
926 Tenagra II Observatory. Observers M. Schwartz, P. R. Holvorcem. Measurer
M. Schwartz. 0.81-m f/7 Ritchey-Chretien + CCD.
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, T. Lowe, A. Schultz,
M. Willman. Measurers K. Chambers, S. Chastel, L. Denneau, H. Flewelling,
M. Huber, E. Lilly, E. Magnier, R. Wainscoat, C. Waters, R. Weryk. 1.8-m
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.
H01 Magdalena Ridge Observatory, Socorro. Observers W. H. Ryan, E. V. Ryan.
Measurer W. H. Ryan. 2.4-m f/8.9 reflector + CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes. 0.81-m f/4.0
astrograph + CCD.
Orbital elements:
2017 UR4 PHA, Earth MOID = 0.0314 AU
Epoch 2017 Sept. 4.0 TT = JDT 2458000.5 MPC
M 231.74849 (2000.0) P Q
n 0.55902928 Peri. 310.96550 -0.92535268 -0.32899332
a 1.4594179 Node 211.23036 +0.34917938 -0.93314206
e 0.3514755 Incl. 21.30453 -0.14763530 -0.14494578
P 1.76 H 20.8 G 0.15 U 8
Residuals in seconds of arc
171022 F51 0.2- 0.0 171023 291 0.1+ 0.2+ 171025 926 0.6- 0.2-
171022 F51 0.1+ 0.0 171023 291 0.0 0.1+ 171026 H21 0.0 0.3-
171022 F51 0.0 0.0 171024 H01 0.2+ 0.2- 171026 H21 0.1- 0.2-
171023 G96 0.2- 0.3- 171024 H01 0.3+ 0.0 171026 H21 0.0 0.0
171023 G96 0.3+ 0.2+ 171024 H01 0.3+ 0.1- 171026 691 0.1- 0.2+
171023 G96 0.2+ 0.4- 171025 926 0.0 0.1- 171026 691 0.2- 0.1+
171023 291 0.1- 0.0 171025 926 0.3+ 0.2+ 171026 691 0.3+ 0.1+
Ephemeris:
2017 UR4 a,e,i = 1.46, 0.35, 21 q = 0.9465
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2017 09 26 01 59 00.9 +23 15 58 0.8778 1.7968 145.6 18.4 22.7
...
2017 10 11 01 41 43.6 +18 21 23 0.7634 1.7479 165.5 8.2 22.0
...
2017 10 19 01 29 40.8 +14 45 54 0.7249 1.7194 175.0 2.9 21.6
...
2017 10 25 01 20 15.7 +11 45 28 0.7078 1.6970 170.9 5.3 21.6
2017 10 26 01 18 42.6 +11 14 28 0.7059 1.6932 169.5 6.1 21.7
2017 10 27 01 17 10.3 +10 43 18 0.7043 1.6893 168.1 7.0 21.7
...
2017 11 02 01 08 21.1 +07 35 36 0.7006 1.6657 159.1 12.3 21.9
...
2017 11 10 00 58 19.6 +03 35 02 0.7097 1.6328 147.2 19.2 22.1
...
2017 11 25 00 47 23.7 -02 34 41 0.7610 1.5670 126.9 30.3 22.5
A. U. Tomatic (C) Copyright 2017 MPC M.P.E.C. 2017-U187
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