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  • MPEC 2019-A11 : 2018 YR2

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    M.P.E.C. 2019-A11                                Issued 2019 Jan. 2, 11:19 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 YR2
    
    Observations:
         K18Y02R  C2018 12 14.36709104 41 31.120-07 13 14.41         22.5 GVEA011F51
         K18Y02R  C2018 12 14.37753704 41 31.106-07 12 52.90         22.6 GVEA011F51
         K18Y02R  C2018 12 14.38795904 41 31.078-07 12 31.41         21.9 GVEA011F51
         K18Y02R  C2018 12 14.39841404 41 31.087-07 12 09.35         21.6 GVEA011F51
         K18Y02R* C2018 12 31.22546 05 33 31.43 +25 47 43.5          19.2 GVEA011G96
         K18Y02R  C2018 12 31.23107 05 33 33.87 +25 49 20.9          19.2 GVEA011G96
         K18Y02R  C2018 12 31.23668 05 33 36.30 +25 50 59.9          19.3 GVEA011G96
         K18Y02R  C2018 12 31.24228 05 33 38.71 +25 52 36.4          19.6 GVEA011G96
         K18Y02R  C2018 12 31.37611 05 34 38.46 +26 30 57.8                VEA011G96
         K18Y02R  C2018 12 31.37770 05 34 39.23 +26 31 25.6          19.6 GVEA011G96
         K18Y02R  C2018 12 31.37782 05 34 39.32 +26 31 27.9          19.7 GVEA011G96
         K18Y02R  C2018 12 31.37942 05 34 40.09 +26 31 55.5          19.6 GVEA011G96
         K18Y02R KC2018 12 31.93626305 40 29.84 +29 19 10.1          19.8 GVEA011L01
         K18Y02R KC2018 12 31.94069 05 40 30.53 +29 20 15.7          18.5 RoEA011K88
         K18Y02R KC2018 12 31.94732 05 40 34.14 +29 22 17.7          19.1 RoEA011K88
         K18Y02R KC2018 12 31.97393605 40 50.13 +29 30 46.8          19.6 GVEA011L01
         K18Y02R KC2018 12 31.97532105 40 50.89 +29 31 13.4          19.6 GVEA011L01
         K18Y02R KC2019 01 01.04685 05 41 32.25 +29 53 11.3                VEA011204
         K18Y02R KC2019 01 01.05523 05 41 37.10 +29 55 44.9          19.6 GVEA011204
         K18Y02R KC2019 01 01.06364 05 41 41.99 +29 58 19.5                VEA011204
         K18Y02R |C2019 01 01.18199 05 43 10.72 +30 42 38.0          19.2 VuEA011807
         K18Y02R |C2019 01 01.18625 05 43 13.08 +30 43 58.5          19.4 VuEA011807
         K18Y02R |C2019 01 01.19071 05 43 15.47 +30 45 23.0          19.1 VuEA011807
         K18Y02R KC2019 01 01.84331 05 51 30.91 +34 13 12.9          18.8 RqEA011160
         K18Y02R KC2019 01 01.84596 05 51 32.63 +34 14 05.4          18.9 RqEA011160
         K18Y02R KC2019 01 01.84748 05 51 33.78 +34 14 38.8          18.9 RqEA011160
         K18Y02R KC2019 01 01.84873 05 51 34.62 +34 15 03.6          18.7 RqEA011160
         K18Y02R KC2019 01 01.85151 05 51 36.54 +34 16 01.5          19.0 RqEA011160
         K18Y02R KC2019 01 01.87785 05 51 54.45 +34 25 04.2          19.3  VEA011104
         K18Y02R KC2019 01 01.88620 05 52 00.14 +34 27 55.5          19.4  VEA011104
         K18Y02R KC2019 01 01.89619 05 52 06.91 +34 31 21.1                VEA011104
         K18Y02R KC2019 01 01.97649005 53 06.11 +34 57 59.0          19.9 GVEA011Z80
         K18Y02R KC2019 01 01.98587305 53 12.59 +35 01 10.3          19.8 GVEA011Z80
         K18Y02R KC2019 01 01.99532605 53 19.32 +35 04 23.3          19.5 GVEA011Z80
         K18Y02R KC2019 01 02.00802205 53 28.78 +35 08 42.5          19.4 GVEA011J95
         K18Y02R KC2019 01 02.01314805 53 32.40 +35 10 26.4          19.0 GVEA011J95
         K18Y02R KC2019 01 02.01474205 53 33.57 +35 10 59.5          19.3 GVEA011J95
    
    Observer details:
    104 San Marcello Pistoiese.  Observers P. Bacci, M. Maestripieri.  Measurers
        P. Bacci, L. Tesi, G. Fagioli.  0.60-m reflector + CCD.
    160 Castelmartini.  Observers M. Jaeger, E. Prosperi, S. Prosperi,
        W. Vollmann.  Measurer E. Prosperi.  0.35-m f/10 Schmidt-Cassegrain + CCD.
    204 Schiaparelli Observatory.  Observer L. Buzzi.  0.84-m f/3.5 reflector +
        CCD.
    807 Cerro Tololo Observatory, La Serena.  Observers T. Linder, R. Holmes.
        0.61-m f/6.5 astrograph + CCD.
    F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, K. Chambers, T. Lowe,
        E. Magnier, A. Schultz, M. Willman.  Measurers S. Chastel, M. Huber,
        Y. Ramanjooloo, R. Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + 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.
    K88 GINOP-KHK, Piszkesteto.  Observer K. Sarneczky.  0.60-m Schmidt + CCD.
    L01 Visnjan Observatory, Tican.  Observers K. Korlevic, P. Kukic,
        F. Valentine, A. Radica.  Measurer K. Korlevic.  1.0-m f/2.9 reflector +
        CCD.
    Z80 Northolt Branch Observatory.  Observer G. Wells.  Measurer D. Bamberger.
        0.25-m f/8.0 Ritchey-Chretien + CCD.
    
    Orbital elements:
    2018 YR2                                                 Earth MOID = 0.0237 AU
    Epoch 2019 Apr. 27.0 TT = JDT 2458600.5                 MPC
    M  59.48761              (2000.0)            P               Q
    n   0.61667654     Peri.   23.28312     -0.51792325     -0.84792430
    a   1.3669871      Node    98.08151     +0.76579285     -0.51847894
    e   0.2730562      Incl.    6.55645     +0.38120442     -0.11047155
    P   1.60           H   26.6           G   0.15           U   6
    Residuals in seconds of arc
    181214 F51  0.2+  0.0     181231 K88  0.1-  0.3+    190101 160  0.1+  0.3-
    181214 F51  0.0   0.0     181231 K88  0.0   0.2-    190101 160  0.2+  0.1+
    181214 F51  0.2-  0.1-    181231 L01  0.1-  0.3-    190101 104  0.4-  0.1+
    181214 F51  0.1+  0.2+    181231 L01  0.0   0.7+    190101 104  0.3-  0.6-
    181231 G96  0.1+  0.1-    190101 204  0.1-  0.0     190101 104  0.6-  0.5-
    181231 G96  0.2+  0.3-    190101 204  0.1+  0.3-    190101 Z80  1.4+  0.5-
    181231 G96  0.2+  1.1+    190101 204  0.0   0.1+    190101 Z80  0.7-  0.6-
    181231 G96  0.0   0.2+    190101 807  0.5-  0.1+    190101 Z80  0.5-  0.1-
    181231 G96  0.6-  0.9-    190101 807  0.1+  0.1-    190102 J95  0.5+  0.0
    181231 G96  0.4-  0.2-    190101 807  0.3-  0.0     190102 J95  0.1-  0.3-
    181231 G96  0.0   0.0     190101 160  0.2+  1.3+    190102 J95  0.2+  0.5+
    181231 G96  0.1+  0.3+    190101 160  1.0-  1.1-
    181231 L01  0.2-  0.3+    190101 160  0.3+  0.8+
    
    Ephemeris:
    2018 YR2                 a,e,i = 1.37, 0.27, 7                   q = 0.9937
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2018 12 03    04 36 36.2 -10 30 45   0.1104  1.0806   147.5    29.4    23.3
    ...
    2018 12 18    04 45 04.4 -04 34 37   0.06169 1.0373   148.9    29.4    21.9
    ...
    2018 12 26    05 02 40.5 +07 32 21   0.03926 1.0195   156.2    22.9    20.7
    ...
    2019 01 01    05 41 12.4 +29 40 15   0.02661 1.0090   164.6    15.0    19.6
    2019 01 02    05 53 25.8 +35 07 22   0.02526 1.0075   163.0    16.6    19.5
    2019 01 03    06 08 56.2 +41 00 00   0.02423 1.0061   159.7    19.8    19.5
    ...
    2019 01 09    10 14 41.0 +68 15 55   0.02594 0.9991   126.7    52.1    20.6
    ...
    2019 01 17    14 22 12.7 +55 49 18   0.04215 0.9942   103.2    74.4    22.3
    ...
    2019 02 01    15 17 41.4 +41 53 49   0.08023 0.9990    97.6    77.9    23.8
    
    A. U. Tomatic                (C) Copyright 2019 MPC           M.P.E.C. 2019-A11
    

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