[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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