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  • MPEC 2017-U163: 2017 UN2

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    M.P.E.C. 2017-U163                               Issued 2017 Oct. 22, 14:31 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 UN2
    
    Observations:
         K17U02N* C2017 10 16.40778 04 49 53.05 +05 45 39.2          20.6 GUEU163G96
         K17U02N  C2017 10 16.41253 04 50 04.58 +05 49 10.2          19.2 GUEU163G96
         K17U02N  C2017 10 16.42204 04 50 27.62 +05 56 11.1          20.4 GUEU163G96
         K17U02N  C2017 10 16.45366 04 51 43.50 +06 19 18.0          19.7 GUEU163G96
         K17U02N  C2017 10 16.45406 04 51 44.50 +06 19 36.4          19.7 GUEU163G96
         K17U02N  C2017 10 16.45447 04 51 45.48 +06 19 53.4          19.7 GUEU163G96
         K17U02N  C2017 10 16.45487 04 51 46.39 +06 20 10.8          19.6 GUEU163G96
         K17U02N  C2017 10 16.50181 04 53 36.65 +06 53 24.9          19.3 GUEU163I52
         K17U02N  C2017 10 16.50194 04 53 36.89 +06 53 29.4          19.9 GUEU163I52
         K17U02N  C2017 10 16.50206 04 53 37.26 +06 53 35.7          19.7 GUEU163I52
         K17U02N  C2017 10 16.51086 04 53 57.72 +06 59 41.6          19.1 GUEU163G96
         K17U02N  C2017 10 16.51127 04 53 58.63 +06 59 58.1          19.5 GUEU163G96
         K17U02N  C2017 10 16.51208 04 54 00.48 +07 00 31.2          19.5 GUEU163G96
         K17U02N KC2017 10 17.11648505 16 44.24 +12 43 41.4                UEU163J95
         K17U02N KC2017 10 17.12116705 16 51.96 +12 45 54.9                UEU163J95
         K17U02N KC2017 10 17.12586505 16 59.66 +12 48 07.7          19.9 GUEU163J95
         K17U02N KC2017 10 20.38533206 09 44.31 +25 00 03.5          22.0 VuEU163H21
         K17U02N KC2017 10 20.39590306 09 48.15 +25 01 10.0          22.1 VuEU163H21
         K17U02N KC2017 10 20.40981706 09 53.16 +25 02 37.0          22.0 VuEU163H21
    
    Observer details:
    G96 Mt. Lemmon Survey.  Observer A. D. Grauer.  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.  1.3-m f/4.0
        astrograph + 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.
    J95 Great Shefford.  Observer P. Birtwhistle.  0.40-m f/6.0 Schmidt-Cassegrain
        + CCD.
    
    Orbital elements:
    2017 UN2                                                 Earth MOID = 0.0064 AU
    Epoch 2017 Sept. 4.0 TT = JDT 2458000.5                 MPC
    M 346.76550              (2000.0)            P               Q
    n   0.34022189     Peri.  351.46093     +0.94485316     -0.32706240
    a   2.0321755      Node    27.64791     +0.30256964     +0.85214665
    e   0.5070566      Incl.    2.07646     +0.12531609     +0.40850492
    P   2.90           H   28.2           G   0.15           U   6
    Residuals in seconds of arc
    171016 G96  0.1+  0.2+    171016 I52  0.5+  0.5+    171017 J95  0.3+  0.2+
    171016 G96  1.0-  1.0-    171016 I52  0.5-  0.4-    171017 J95  0.4-  0.2+
    171016 G96 (2.0-  2.8-)   171016 I52  0.9+  0.9+    171020 H21  0.2-  0.0
    171016 G96  0.4-  0.3-    171016 G96  0.9+  0.9+    171020 H21  0.1-  0.0
    171016 G96  0.3+  0.8+    171016 G96  0.2+  0.4+    171020 H21  0.1-  0.5+
    171016 G96  0.4+  0.1+    171016 G96  0.2-  0.1-
    171016 G96  0.2-  0.2+    171017 J95  0.6+  0.6-
    
    Ephemeris:
    2017 UN2                 a,e,i = 2.03, 0.51, 2                   q = 1.0017
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2017 09 22    19 21 30.4 -35 44 46   0.08793 1.0336   107.4    67.9    25.4
    ...
    2017 10 07    19 51 27.5 -39 41 26   0.03105 1.0043    98.2    80.1    23.5
    ...
    2017 10 15    03 04 12.6 -21 00 49   0.0062061.0020   141.0    38.8    18.7
    ...
    2017 10 21    06 14 17.7 +25 58 27   0.02558 1.0063   114.3    64.4    22.5
    2017 10 22    06 20 18.1 +27 10 42   0.02941 1.0076   114.0    64.5    22.8
    2017 10 23    06 24 55.4 +28 05 35   0.03327 1.0089   113.9    64.3    23.1
    ...
    2017 10 29    06 38 30.4 +30 53 13   0.05649 1.0202   116.9    60.2    24.2
    ...
    2017 11 06    06 42 04.3 +32 15 59   0.08738 1.0427   124.0    52.0    24.9
    ...
    2017 11 21    06 32 14.8 +33 06 46   0.1463  1.1050   140.7    34.5    25.7
    
    A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-U163
    

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