[Iaude] MPEC X124: 2018 XG4 [a=1.96,e=0.50,i=6.5,H=27.7]

mpec at mpcdb1.cfa.harvard.edu mpec at mpcdb1.cfa.harvard.edu
Fri Dec 14 23:21:32 EST 2018


M.P.E.C. 2018-X124                               Issued 2018 Dec. 15, 04:17 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 at CFA.HARVARD.EDU
            URL https://www.minorplanetcenter.net/    ISSN 1523-6714


                                   2018 XG4
 
Observations:
     K18X04G* C2018 12 14.15078 01 21 59.88 +05 19 02.5          18.0 GVEX124G96
     K18X04G  C2018 12 14.15639 01 22 32.95 +05 15 56.3          18.0 GVEX124G96
     K18X04G  C2018 12 14.16763 01 23 39.61 +05 09 41.3          18.0 GVEX124G96
     K18X04G  C2018 12 14.23226501 30 09.53 +04 32 13.5          18.9 GVEX124H01
     K18X04G  C2018 12 14.23637501 30 35.16 +04 29 49.0          18.4 GVEX124H01
     K18X04G  C2018 12 14.23892 01 30 53.51 +04 28 48.6          18.5 GVEX124I52
     K18X04G  C2018 12 14.23939 01 30 56.47 +04 28 31.3          19.0 GVEX124I52
     K18X04G  C2018 12 14.23985 01 30 59.35 +04 28 15.2          18.8 GVEX124I52
     K18X04G  C2018 12 14.24034 01 31 02.33 +04 27 58.2          19.2 GVEX124I52
     K18X04G  C2018 12 14.24825901 31 49.66 +04 22 48.8          18.5 GVEX124H01
     K18X04G  C2018 12 14.26101401 33 10.27 +04 15 14.3          18.6 GVEX124H01
     K18X04G  C2018 12 14.27336 01 34 30.89 +04 08 20.1          19.1 GVEX124I52
     K18X04G  C2018 12 14.27384 01 34 33.93 +04 08 02.2          19.6 GVEX124I52
     K18X04G  C2018 12 14.27433 01 34 37.12 +04 07 45.4          18.6 GVEX124I52
     K18X04G  C2018 12 14.27480 01 34 40.12 +04 07 28.2          19.0 GVEX124I52
     K18X04G  C2018 12 14.31160 01 38 36.33 +03 44 51.9          18.6  qEX124H15
     K18X04G  C2018 12 14.31535 01 39 01.15 +03 42 34.0          18.6  qEX124H15
     K18X04G  C2018 12 14.31910 01 39 26.05 +03 40 16.2          19.2  qEX124H15
     K18X04G  C2018 12 14.32285 01 39 50.98 +03 37 57.1          18.8  qEX124H15
     K18X04G  C2018 12 14.33048 01 40 43.80 +03 33 26.2          18.6 GVEX124G96
     K18X04G  C2018 12 14.33071 01 40 45.38 +03 33 18.0          19.1 GVEX124G96
     K18X04G  C2018 12 14.33094 01 40 46.93 +03 33 08.4          19.5 GVEX124G96
     K18X04G  C2018 12 14.33117 01 40 48.50 +03 33 00.0          18.5 GVEX124G96
     K18X04G  C2018 12 14.55858 02 08 35.12 +01 03 51.3          19.1 RrEX124P93
     K18X04G  C2018 12 14.55951 02 08 41.75 +01 03 12.7          19.0 RrEX124P93
     K18X04G  C2018 12 14.56043 02 08 48.38 +01 02 34.9          19.2 RrEX124P93
     K18X04G KC2018 12 14.76743502 36 35.60 -01 28 19.0          18.7 GVEX124L01
     K18X04G KC2018 12 14.76871202 36 45.44 -01 29 15.6          19.0 GVEX124L01
     K18X04G KC2018 12 14.76914102 36 48.76 -01 29 34.6          18.9 GVEX124L01
     K18X04G KC2018 12 14.79520 02 40 15.11 -01 48 56.2          18.9 GVEX124204
     K18X04G KC2018 12 14.80420 02 41 25.08 -01 55 36.1                VEX124204
     K18X04G HC2018 12 14.81472 02 42 47.03 -02 03 23.0                VEX124204
     K18X04G KC2018 12 14.90966702 55 23.53 -03 15 19.1          18.6 GVEX124J95
     K18X04G KC2018 12 14.91152602 55 38.31 -03 16 41.7          18.5 GVEX124J95
     K18X04G KC2018 12 14.91423602 55 59.87 -03 18 42.5          18.3 GVEX124J95
     K18X04G KC2018 12 14.91613602 56 14.94 -03 20 08.1          18.7 GVEX124J95
 
Observer details:
204 Schiaparelli Observatory.  Observer L. Buzzi.  0.60-m f/4.64 reflector +
    CCD.
G96 Mt. Lemmon Survey.  Observer A. R. Gibbs.  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.
H15 ISON-NM Observatory, Mayhill.  Observer L. Elenin.  0.4-m f/3 reflector +
    CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observer H. Groeller.
    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.
J95 Great Shefford.  Observer P. Birtwhistle.  0.41-m f/6.3
    Schmidt-Cassegrain + CCD.
L01 Visnjan Observatory, Tican.  Observer K. Korlevic.  1.0-m f/2.9 reflector
    + CCD.
P93 Space Tracking and Communications Center, JAXA.  Observers S. Okumura,
    T. Fujiwara.  1.0-m f/3.0 reflector + CCD.
 
Orbital elements:
2018 XG4                                                 Earth MOID = 0.0037 AU
Epoch 2019 Apr. 27.0 TT = JDT 2458600.5                 MPC
M  50.83739              (2000.0)            P               Q
n   0.36030736     Peri.  171.37844     +0.29960467     -0.94738942
a   1.9559330      Node   261.12969     +0.86839693     +0.31969601
e   0.4966583      Incl.    6.54681     +0.39512506     +0.01573997
P   2.74           H   27.7           G   0.15           U   6
Residuals in seconds of arc
181214 G96  0.5+  0.7-    181214 I52  0.4-  0.6-    181214 P93  0.5+  0.4+
181214 G96  0.0   0.7-    181214 I52  0.4+  0.3+    181214 P93  0.8+  0.8+
181214 G96  0.0   0.3-    181214 I52  0.3+  0.0     181214 L01  0.1-  0.8+
181214 H01  0.2-  0.0     181214 H15  0.1-  0.8-    181214 L01  0.5-  0.5+
181214 H01  0.1+  0.0     181214 H15  0.0   0.3-    181214 L01  0.5-  0.5+
181214 I52  0.4-  0.4+    181214 H15  0.2+  0.7+    181214 204  0.2-  0.2-
181214 I52  0.0   0.3-    181214 H15  0.3-  0.6+    181214 204  0.2-  0.7-
181214 I52  0.2+  0.2-    181214 G96  1.1-  0.4+    181214 204  0.5+  0.0
181214 I52  1.0-  0.1+    181214 G96  0.5-  0.8+    181214 J95  0.1+  0.6-
181214 H01  0.4+  0.0     181214 G96  0.2-  0.2-    181214 J95  0.1+  0.0
181214 H01  0.3-  0.1+    181214 G96  0.3+  0.1-    181214 J95  0.2+  0.4+
181214 I52  0.0   0.0     181214 P93  1.2+  0.4+    181214 J95  0.6-  0.2-

Ephemeris:
2018 XG4                 a,e,i = 1.96, 0.50, 7                   q = 0.9845
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2018 11 15    21 34 50.1 +19 21 40   0.1283  1.0182    99.4    73.4    25.8
...
2018 11 30    21 46 34.1 +18 55 23   0.06677 0.9873    88.9    87.2    24.9
...
2018 12 08    22 14 15.0 +17 57 27   0.03222 0.9842    87.4    90.7    23.4
...
2018 12 14    01 06 55.5 +06 45 48   0.0084490.9882   116.3    63.2    19.6
2018 12 15    03 07 50.9 -04 04 49   0.0069960.9893   136.2    43.5    18.6
2018 12 16    05 17 00.0 -14 05 40   0.0081600.9907   142.4    37.3    18.7
...
2018 12 22    08 29 58.9 -19 48 19   0.03184 1.0015   123.2    55.2    22.2
...
2018 12 30    08 56 43.9 -19 05 37   0.06707 1.0236   125.3    51.6    23.8
...
2019 01 14    09 01 59.6 -16 49 20   0.1344  1.0855   136.8    38.3    25.1

A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-X124



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