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  • MPEC 2019-A12 : 2018 YS2

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    M.P.E.C. 2019-A12                                Issued 2019 Jan. 2, 11:23 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
    
                                       2018 YS2
    
    Observations:
         K18Y02S* C2018 12 31.29010 06 39 46.95 +24 22 12.9          20.6 GVEA012G96
         K18Y02S  C2018 12 31.29522 06 39 46.94 +24 22 02.9          20.6 GVEA012G96
         K18Y02S  C2018 12 31.30035 06 39 46.84 +24 21 52.2          20.3 GVEA012G96
         K18Y02S KC2018 12 31.39791 06 39 45.79 +24 18 28.1          20.9 RoEA012691
         K18Y02S KC2018 12 31.40812 06 39 45.71 +24 18 06.4          20.1 RoEA012691
         K18Y02S  C2018 12 31.46020 06 39 45.42 +24 16 12.0          22.0 GVEA012G96
         K18Y02S  C2018 12 31.46302 06 39 45.34 +24 16 05.9                VEA012G96
         K18Y02S  C2018 12 31.46584 06 39 45.43 +24 15 59.8                VEA012G96
         K18Y02S  C2018 12 31.46928 06 39 45.40 +24 15 52.6                VEA012G96
         K18Y02S KC2018 12 31.94515706 39 52.84 +23 59 04.8          20.4 GVEA012L01
         K18Y02S pC2018 12 31.95254106 39 52.75 +23 58 49.9          20.8 GVEA012L01
         K18Y02S KC2018 12 31.95487906 39 52.74 +23 58 44.3          20.6 GVEA012L01
         K18Y02S |C2019 01 01.22912 06 39 54.39 +23 49 58.8          20.6 VuEA012807
         K18Y02S |C2019 01 01.23604 06 39 54.29 +23 49 44.0          20.7 VuEA012807
         K18Y02S |C2019 01 01.24341 06 39 54.20 +23 49 27.4          20.6 VuEA012807
         K18Y02S KC2019 01 02.02213206 40 02.33 +23 19 35.5          20.1 GVEA012J95
         K18Y02S KC2019 01 02.03927306 40 02.19 +23 18 57.3          20.6 GVEA012J95
         K18Y02S KC2019 01 02.04921706 40 02.16 +23 18 33.9          20.3 GVEA012J95
    
    Observer details:
    691 Steward Observatory, Kitt Peak-Spacewatch.  Observer T. H. Bressi.  0.9-m
        f/3 reflector + CCD.
    807 Cerro Tololo Observatory, La Serena.  Observers T. Linder, R. Holmes.
        0.61-m f/6.5 astrograph + CCD.
    G96 Mt. Lemmon Survey.  Observer B. M. Africano.  Measurers B. M. Africano,
        E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer,
        H. Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, R. L. Seaman,
        F. C. Shelly.  1.5-m reflector + 10K CCD.
    J95 Great Shefford.  Observer P. Birtwhistle.  0.41-m f/6.3
        Schmidt-Cassegrain + CCD.
    L01 Visnjan Observatory, Tican.  Observers K. Korlevic, F. Valentine,
        P. Kukic, A. Radica.  Measurer K. Korlevic.  1.0-m f/2.9 reflector + CCD.
    
    Orbital elements:
    2018 YS2                                                 Earth MOID = 0.0803 AU
    Epoch 2019 Apr. 27.0 TT = JDT 2458600.5                 MPC
    M  32.29177              (2000.0)            P               Q
    n   0.48299480     Peri.  228.92630     -0.86163407     -0.49891074
    a   1.6088211      Node   280.95321     +0.48945128     -0.76828624
    e   0.3561659      Incl.    5.44365     +0.13425413     -0.40102908
    P   2.04           H   24.4           G   0.15           U   8
    Residuals in seconds of arc
    181231 G96  0.6-  0.4-    181231 G96  0.4-  0.4-    190101 807  0.2-  0.0
    181231 G96  0.1+  0.1+    181231 G96  0.9+  0.4-    190101 807  0.4-  0.4+
    181231 G96  0.4-  0.0     181231 G96  0.6+  0.1-    190101 807  0.4-  0.0
    181231 691  0.2-  0.3+    181231 L01  0.4+  0.5-    190102 J95  0.2+  0.3-
    181231 691  0.1-  0.5+    181231 L01  0.0   0.3+    190102 J95  0.3-  0.5+
    181231 G96  0.5+  0.5-    181231 L01  0.1+  0.3-    190102 J95  0.1+  0.2-
    
    Ephemeris:
    2018 YS2                 a,e,i = 1.61, 0.36, 5                   q = 1.0358
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2018 12 03    06 29 38.5 +32 27 46   0.3154  1.2744   152.7    20.8    23.4
    ...
    2018 12 18    06 37 10.4 +29 49 43   0.2242  1.2028   166.0    11.4    22.3
    ...
    2018 12 26    06 38 58.1 +27 01 35   0.1849  1.1675   173.8     5.2    21.5
    ...
    2019 01 01    06 39 53.0 +23 57 30   0.1596  1.1429   178.8     1.1    20.9
    2019 01 02    06 40 02.4 +23 20 54   0.1557  1.1389   178.1     1.6    20.9
    2019 01 03    06 40 12.5 +22 42 26   0.1519  1.1351   177.2     2.4    20.9
    ...
    2019 01 09    06 41 39.2 +18 08 46   0.1312  1.1130   170.4     8.5    20.8
    ...
    2019 01 17    06 46 01.9 +09 52 06   0.1091  1.0871   160.4    17.6    20.7
    ...
    2019 02 01    07 09 05.7 -12 51 31   0.08492 1.0517   139.9    37.1    20.7
    
    A. U. Tomatic                (C) Copyright 2019 MPC           M.P.E.C. 2019-A12
    

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