• MPC Preparation (Info)

    • MPEC 2018-X87 : 2018 XJ2

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    Read MPEC 2018-X86 Read MPEC 2018-X88 

    M.P.E.C. 2018-X87                                Issued 2018 Dec. 12, 15:21 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 XJ2

Observations:
     K18X02J* C2018 12 09.49424 08 03 26.97 +51 07 24.0          20.3 GVEX087G96
     K18X02J  C2018 12 09.49953 08 03 31.06 +51 08 00.1          20.4 GVEX087G96
     K18X02J  C2018 12 09.50483 08 03 35.19 +51 08 36.0          20.3 GVEX087G96
     K18X02J  C2018 12 09.51012 08 03 39.18 +51 09 10.6          20.4 GVEX087G96
     K18X02J KC2018 12 10.17081608 12 56.10 +52 24 04.7          20.4 GVEX087L01
     K18X02J KC2018 12 10.17340708 12 58.35 +52 24 22.1          20.6 GVEX087L01
     K18X02J pC2018 12 10.17491808 12 59.59 +52 24 31.7          20.5 GVEX087L01
     K18X02J KC2018 12 10.17664408 13 01.10 +52 24 43.5          20.3 GVEX087L01
     K18X02J  C2018 12 10.31344 08 15 09.75 +52 40 21.4          19.4 GVEX087I52
     K18X02J  C2018 12 10.31469 08 15 10.77 +52 40 28.6          19.9 GVEX087I52
     K18X02J  C2018 12 10.31670 08 15 12.50 +52 40 43.8          19.7 GVEX087I52
     K18X02J  C2018 12 10.31795 08 15 13.48 +52 40 52.2          20.2 GVEX087I52
     K18X02J KC2018 12 10.47808 08 17 30.20 +52 58 52.2          20.1 GUEX087734
     K18X02J KC2018 12 10.48922 08 17 40.03 +53 00 06.1          20.3 GUEX087734
     K18X02J KC2018 12 10.50036 08 17 49.79 +53 01 19.2          20.1 GUEX087734
     K18X02J KC2018 12 11.39914408 32 19.31 +54 41 02.9          20.7 VuEX087H21
     K18X02J KC2018 12 11.40367208 32 23.76 +54 41 32.2          19.9 VuEX087H21
     K18X02J KC2018 12 11.41100208 32 30.92 +54 42 19.8          19.8 VuEX087H21
     K18X02J  C2018 12 12.45826708 51 27.80 +56 33 06.6          20.0 GVEX087H01
     K18X02J  C2018 12 12.46423408 51 34.39 +56 33 42.9          20.2 GVEX087H01
     K18X02J  C2018 12 12.47323308 51 44.38 +56 34 37.4          20.3 GVEX087H01
     K18X02J  C2018 12 12.47878908 51 50.53 +56 35 10.9          20.0 GVEX087H01

Observer details:
734 Farpoint Observatory, Eskridge.  Observer G. Hug.  0.7-m reflector + CCD.
G96 Mt. Lemmon Survey.  Observer D. C. Fuls.  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.
H01 Magdalena Ridge Observatory, Socorro.  Observers W. H. Ryan, E. V. Ryan.
    Measurer W. H. Ryan.  2.4-m f/8.9 Ritchey-Chretien + CCD.
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes.  0.61-m f/4.5
    astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observer G. J. Leonard.
    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.  1.0-m reflector + CCD.
L01 Visnjan Observatory, Tican.  Observer K. Korlevic.  1.0-m f/2.9 reflector
    + CCD.

Orbital elements:
2018 XJ2                                                 Earth MOID = 0.0979 AU
Epoch 2019 Apr. 27.0 TT = JDT 2458600.5                 MPC
M  46.71422              (2000.0)            P               Q
n   0.54486047     Peri.   80.21362     -0.78147903     -0.60182928
a   1.4846105      Node    62.59743     +0.47467923     -0.74468851
e   0.3817346      Incl.   10.68442     +0.40493228     -0.28851439
P   1.81           H   23.2           G   0.15           U   8
Residuals in seconds of arc
181209 G96  0.1+  0.4-    181210 I52  0.6+  0.9+    181211 H21  0.1+  0.1-
181209 G96  0.2+  0.1+    181210 I52  0.1+  0.6-    181211 H21  0.0   0.0
181209 G96  0.5+  0.4+    181210 I52  0.1+  0.6+    181212 H01  0.0   0.0
181209 G96  0.5-  0.4-    181210 I52  0.8-  0.2+    181212 H01  0.1-  0.0
181210 L01  0.4-  0.2-    181210 734  0.2-  0.2-    181212 H01  0.1+  0.0
181210 L01  0.1+  0.0     181210 734  0.3+  0.3+    181212 H01  0.0   0.1-
181210 L01  0.3-  0.5-    181210 734  0.1-  0.1+
181210 L01  0.2+  0.2-    181211 H21  0.2-  0.0

Ephemeris:
2018 XJ2                 a,e,i = 1.48, 0.38, 11                  q = 0.9179
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2018 11 12    05 49 07.2 +19 24 19   0.2889  1.2297   141.7    29.9    22.3
...
2018 11 27    06 30 50.4 +31 08 18   0.1823  1.1439   146.9    28.1    21.0
...
2018 12 05    07 16 25.0 +42 47 27   0.1403  1.1001   142.4    33.1    20.5
...
2018 12 11    08 25 42.9 +53 56 50   0.1195  1.0687   132.2    43.0    20.4
2018 12 12    08 42 53.1 +55 45 02   0.1172  1.0637   130.0    45.2    20.4
2018 12 13    09 02 12.0 +57 26 30   0.1152  1.0587   127.6    47.5    20.4
...
2018 12 19    11 38 14.6 +62 22 39   0.1111  1.0298   111.5    62.8    20.7
...
2018 12 27    14 27 04.7 +53 08 17   0.1244  0.9949    91.7    81.1    21.5
...
2019 01 11    16 06 53.8 +32 22 28   0.1801  0.9447    72.4    97.1    22.8

A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-X87

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