• MPC Preparation (Info)

  • MPEC 2018-W21 : 2018 WJ

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    M.P.E.C. 2018-W21                                Issued 2018 Nov. 18, 21:10 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 WJ
    
    Observations:
         K18W00J* C2018 11 17.26735 03 15 28.84 +15 03 43.4          20.1 GVEW021G96
         K18W00J  C2018 11 17.27290 03 15 28.92 +15 03 49.4          20.0 GVEW021G96
         K18W00J  C2018 11 17.27845 03 15 28.99 +15 03 55.0          20.2 GVEW021G96
         K18W00J  C2018 11 17.28400 03 15 29.08 +15 04 01.1          20.2 GVEW021G96
         K18W00J  C2018 11 17.35555 03 15 30.32 +15 05 10.6          20.6 GVEW021I52
         K18W00J  C2018 11 17.35800 03 15 30.34 +15 05 12.8          20.6 GVEW021I52
         K18W00J  C2018 11 17.36044 03 15 30.40 +15 05 15.0          20.5 GVEW021I52
         K18W00J  C2018 11 17.36289 03 15 30.48 +15 05 18.0          20.6 GVEW021I52
         K18W00J  C2018 11 18.26490 03 18 47.85 +15 30 44.0          19.7 GVEW021G96
         K18W00J  C2018 11 18.26881 03 18 48.39 +15 30 54.5          19.6 GVEW021G96
         K18W00J  C2018 11 18.27274 03 18 48.97 +15 31 05.0          19.4 GVEW021G96
         K18W00J  C2018 11 18.27663 03 18 49.52 +15 31 15.2          19.5 GVEW021G96
         K18W00J  C2018 11 18.42945 03 19 16.96 +15 37 47.7          19.1 GVEW021I52
         K18W00J  C2018 11 18.43042 03 19 17.21 +15 37 50.2          19.3 GVEW021I52
         K18W00J  C2018 11 18.43139 03 19 17.44 +15 37 52.6          19.4 GVEW021I52
         K18W00J  C2018 11 18.43236 03 19 17.70 +15 37 55.1          19.3 GVEW021I52
         K18W00J KC2018 11 18.80304 03 23 20.01 +16 01 14.1          18.4  VEW021104
         K18W00J KC2018 11 18.81152 03 23 24.84 +16 02 04.7          18.5  VEW021104
         K18W00J KC2018 11 18.82001 03 23 29.63 +16 02 56.7          16.9  VEW021104
         K18W00J KC2018 11 18.83504 03 23 39.39 +16 02 55.2          18.5 GVEW021J95
         K18W00J KC2018 11 18.83810 03 23 41.28 +16 03 13.6          18.4 GVEW021J95
         K18W00J KC2018 11 18.84103 03 23 41.67 +16 05 05.5          17.9 RVEW021K63
         K18W00J KC2018 11 18.84113 03 23 43.18 +16 03 32.7          18.5 GVEW021J95
         K18W00J KC2018 11 18.84471 03 23 43.80 +16 05 28.6          17.9 RVEW021K63
         K18W00J KC2018 11 18.84856 03 23 45.98 +16 05 52.8          18.1 RVEW021K63
    
    Observer details:
    104 San Marcello Pistoiese.  Observers P. Bacci, M. Maestripieri.  Measurers
        P. Bacci, L. Tesi, G. Fagioli.  0.60-m reflector + CCD.
    G96 Mt. Lemmon Survey.  Observer H. Groeller.  Measurers B. M. Africano,
        E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer,
        H. Groeller, J. A. Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard,
        R. L. Seaman, F. C. Shelly.  1.5-m reflector + 10K CCD.
    I52 Steward Observatory, Mt. Lemmon Station.  Observer R. A. Kowalski.
        Measurers B. M. Africano, E. J. Christensen, G. A. Farneth, D. C. Fuls,
        A. R. Gibbs, A. D. Grauer, H. Groeller, J. A. Johnson, R. A. Kowalski,
        S. M. Larson, G. J. Leonard, R. L. Seaman, F. C. Shelly.  1.0-m reflector
        + CCD.
    J95 Great Shefford.  Observer P. Birtwhistle.  0.41-m f/6.3
        Schmidt-Cassegrain + CCD.
    K63 G. Pascoli Observatory, Castelvecchio Pascoli.  Observer R. Bacci.
        0.41-m f/3.2 Newtonian reflector + CCD.
    
    Orbital elements:
    2018 WJ                                                  Earth MOID = 0.0001 AU
    Epoch 2019 Apr. 27.0 TT = JDT 2458600.5                 MPC
    M  33.52642              (2000.0)            P               Q
    n   0.29275306     Peri.   75.52020     -0.67921003     -0.73351506
    a   2.2463034      Node    57.29003     +0.66137597     -0.62651593
    e   0.6949475      Incl.    1.70857     +0.31820678     -0.26350227
    P   3.37           H   27.9           G   0.15           U   5
    Residuals in seconds of arc
    181117 G96  0.2-  0.2+    181118 G96  0.2-  0.0     181118 104  1.3+  0.5+
    181117 G96  0.1-  0.3+    181118 G96  0.2+  0.0     181118 J95  0.3+  0.6+
    181117 G96  0.1-  0.0     181118 G96  0.1+  0.1-    181118 J95  0.2-  0.0
    181117 G96  0.1+  0.3+    181118 I52  0.2+  0.6-    181118 K63  0.4-  0.6-
    181117 I52  0.7+  0.1+    181118 I52  0.3+  0.5-    181118 J95  0.3-  0.1+
    181117 I52  0.1+  0.0     181118 I52  0.2+  0.6-    181118 K63  0.3-  0.8-
    181117 I52  0.0   0.0     181118 I52  0.4+  0.5-    181118 K63  1.0-  1.1-
    181117 I52  0.3+  0.8+    181118 104  1.1+  0.4+
    181118 G96  0.0   0.1-    181118 104  1.6+  0.1+
    
    Ephemeris:
    2018 WJ                  a,e,i = 2.25, 0.69, 2                   q = 0.6852
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2018 10 19    03 07 03.3 +14 29 05   0.3677  1.3419   156.7    17.0    27.3
    ...
    2018 11 03    03 10 43.6 +14 32 01   0.1852  1.1752   170.5     8.0    25.2
    ...
    2018 11 11    03 11 45.1 +14 34 49   0.09618 1.0862   176.6     3.1    23.3
    ...
    2018 11 17    03 15 02.2 +15 01 46   0.03168 1.0204   175.1     4.7    20.9
    2018 11 18    03 17 38.1 +15 23 49   0.02103 1.0095   175.0     4.9    20.0
    2018 11 19    03 25 40.0 +16 30 48   0.01039 0.9987   176.2     3.7    18.3
    ...
    2018 11 25    15 10 58.7 -14 26 47   0.05366 0.9351    13.5   165.7    35.0
    ...
    2018 12 03    15 14 19.3 -14 53 23   0.1411  0.8551    20.5   156.2    33.1
    ...
    2018 12 18    15 25 20.6 -15 58 13   0.3213  0.7348    32.8   133.5    30.8
    
    A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-W21
    

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