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  • MPEC 2017-U158: 2017 UL2

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    M.P.E.C. 2017-U158                               Issued 2017 Oct. 22, 14:07 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 UL2
    
    Observations:
         K17U02L* C2017 10 16.28122 01 22 25.47 +02 31 43.0          20.4 GUEU158G96
         K17U02L  C2017 10 16.28643 01 22 24.71 +02 31 22.8          20.1 GUEU158G96
         K17U02L  C2017 10 16.29163 01 22 23.87 +02 31 03.3          20.2 GUEU158G96
         K17U02L  C2017 10 16.29681 01 22 23.06 +02 30 43.5          20.6 GUEU158G96
         K17U02L KC2017 10 16.36786 01 22 12.23 +02 26 10.6                oEU158691
         K17U02L KC2017 10 16.37696 01 22 10.83 +02 25 34.9                oEU158691
         K17U02L  C2017 10 16.44966 01 21 59.85 +02 20 56.8          20.9 GUEU158I52
         K17U02L  C2017 10 16.45091 01 21 59.61 +02 20 51.9          22.0 GUEU158I52
         K17U02L  C2017 10 16.45217 01 21 59.46 +02 20 47.5          22.9 GUEU158I52
         K17U02L  C2017 10 16.45342 01 21 59.29 +02 20 42.4          21.2 GUEU158I52
         K17U02L  C2017 10 19.21001 01 15 48.42 -00 24 05.7          20.4 RoEU158926
         K17U02L  C2017 10 19.21652 01 15 47.50 -00 24 28.0          20.6 RoEU158926
         K17U02L  C2017 10 19.22301 01 15 46.63 -00 24 50.5          20.5 RoEU158926
         K17U02L  C2017 10 19.25562 01 15 42.23 -00 26 39.8          21.0 RoEU158926
         K17U02L  C2017 10 19.26212 01 15 41.37 -00 27 01.5          20.6 RoEU158926
         K17U02L  C2017 10 19.26861 01 15 40.46 -00 27 23.0          20.9 RoEU158926
         K17U02L KC2017 10 20.25100901 13 38.82 -01 20 56.9          21.1 VuEU158H21
         K17U02L KC2017 10 20.26340501 13 37.25 -01 21 36.2          21.1 VuEU158H21
         K17U02L KC2017 10 20.27864601 13 35.34 -01 22 24.7          21.4 VuEU158H21
         K17U02L  C2017 10 21.21145 01 11 46.64 -02 10 42.3                UEU158I52
         K17U02L  C2017 10 21.21949 01 11 45.62 -02 11 07.2                UEU158I52
         K17U02L  C2017 10 21.22442 01 11 45.02 -02 11 22.4          21.6 GUEU158I52
         K17U02L  C2017 10 21.22935 01 11 44.43 -02 11 37.7                UEU158I52
         K17U02L  C2017 10 22.41552 01 09 31.01 -03 09 44.2          20.5 GUEU158G96
         K17U02L  C2017 10 22.41772 01 09 30.81 -03 09 51.3          21.8 GUEU158G96
         K17U02L  C2017 10 22.41883 01 09 30.70 -03 09 54.1          21.0 GUEU158G96
    
    Observer details:
    691 Steward Observatory, Kitt Peak.  Observer T. H. Bressi.  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.
    G96 Mt. Lemmon Survey.  Observers A. D. Grauer, 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.
    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.
    I52 Steward Observatory, Mt. Lemmon Station.  Observers R. G. Matheny,
        J. A. Johnson.  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 UL2                                                 Earth MOID = 0.1688 AU
    Epoch 2017 Sept. 4.0 TT = JDT 2458000.5                 MPC
    M  50.55739              (2000.0)            P               Q
    n   0.77891474     Peri.   51.26524     -0.36161669     +0.92272236
    a   1.1698839      Node   198.90806     -0.93079967     -0.36549637
    e   0.4552130      Incl.   24.32487     -0.05334172     +0.12245753
    P   1.27           H   22.1           G   0.15           U   9
    Residuals in seconds of arc
    171016 G96  0.2-  0.2-    171016 I52  0.1+  0.0     171020 H21  0.6+  0.3-
    171016 G96  0.5+  0.3-    171019 926  0.2+  1.1+    171021 I52  0.5+  0.4+
    171016 G96  0.1-  0.2+    171019 926  0.4-  0.6+    171021 I52  0.0   0.1-
    171016 G96  0.3-  0.3+    171019 926  0.4-  0.1-    171021 I52  0.0   0.4-
    171016 691  0.4+  0.2+    171019 926  0.4-  0.0     171021 I52  0.3+  0.7-
    171016 691  0.3+  0.6-    171019 926  0.1-  0.0     171022 G96  0.6-  0.6+
    171016 I52  0.1+  0.0     171019 926  0.6-  0.3+    171022 G96  0.1+  0.3-
    171016 I52  0.7-  0.1-    171020 H21  0.2-  0.5-    171022 G96  0.4+  0.1+
    171016 I52  0.2-  0.3+    171020 H21  0.1+  0.3-
    
    Ephemeris:
    2017 UL2                 a,e,i = 1.17, 0.46, 24                  q = 0.6373
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2017 09 22    02 52 01.0 +37 45 26   0.2679  1.1760   124.4    44.8    21.3
    ...
    2017 10 07    01 49 26.1 +14 25 21   0.2892  1.2787   162.9    13.3    20.7
    ...
    2017 10 15    01 25 36.2 +03 56 31   0.3326  1.3290   175.3     3.5    20.7
    ...
    2017 10 21    01 12 10.6 -01 59 42   0.3779  1.3645   165.3    10.6    21.3
    2017 10 22    01 10 17.5 -02 49 33   0.3864  1.3703   163.6    11.8    21.4
    2017 10 23    01 08 30.1 -03 36 50   0.3951  1.3760   161.9    13.0    21.5
    ...
    2017 10 29    00 59 40.6 -07 31 13   0.4518  1.4091   152.3    19.1    22.1
    ...
    2017 11 06    00 52 24.5 -10 55 38   0.5371  1.4505   141.5    25.2    22.7
    ...
    2017 11 21    00 49 18.1 -13 41 35   0.7175  1.5192   125.2    32.1    23.6
    
    A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-U158
    

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