[Iaude] MPEC X139: 2020 XC4 [a=1.19,e=0.17,i=6.6,H=26.0]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Sat Dec 12 14:09:45 EST 2020


M.P.E.C. 2020-X139                            Issued 2020 December 12, 19:08 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

                                    2020 XC4                                    


Observations:
     K20X04C*HC2020 12 09.10790900 17 52.98 -19 52 03.5          20.16GVEX139G96
     K20X04C HC2020 12 09.11356300 17 53.74 -19 50 04.5          19.83GVEX139G96
     K20X04C HC2020 12 09.11920800 17 54.42 -19 48 07.6          19.70GVEX139G96
     K20X04C KC2020 12 09.19725500 18 05.28 -19 20 26.1          20.40GVEX139I52
     K20X04C KC2020 12 09.19782200 18 05.41 -19 20 14.5          19.32GVEX139I52
     K20X04C KC2020 12 09.19838600 18 05.51 -19 20 01.5          19.54GVEX139I52
     K20X04C KC2020 12 09.19894900 18 05.57 -19 19 50.1          19.51GVEX139I52
     K20X04C  C2020 12 12.22501700 35 24.517+02 47 57.85         19.61wUEX139F51
     K20X04C  C2020 12 12.24930700 35 29.036+03 00 32.94         19.63wUEX139F51
     K20X04C KC2020 12 12.72946200 38 50.43 +07 10 14.7          19.5 GVEX139L01
     K20X04C KC2020 12 12.72990500 38 55.57 +07 09 41.8          18.9 GVEX139J95
     K20X04C KC2020 12 12.73070800 38 50.76 +07 10 55.1          19.5 GVEX139L01
     K20X04C KC2020 12 12.73195500 38 51.08 +07 11 35.5          19.3 GVEX139L01
     K20X04C KC2020 12 12.73221800 38 56.22 +07 10 56.5          19.5 GVEX139J95
     K20X04C KC2020 12 12.73330800 38 51.43 +07 12 18.7          19.3 GVEX139L01
     K20X04C KC2020 12 12.73441900 38 56.88 +07 12 06.9          19.3 GVEX139J95
     K20X04C KC2020 12 12.73466400 38 51.77 +07 13 02.1          19.6 GVEX139L01
     K20X04C KC2020 12 12.73691900 38 57.57 +07 13 28.0          19.0 GVEX139J95
     K20X04C KC2020 12 12.74088000 38 58.88 +07 16 47.9          19.2 GVEX139B49
     K20X04C KC2020 12 12.74362300 38 59.59 +07 18 15.5          19.4 GVEX139B49
     K20X04C KC2020 12 12.74657400 39 00.39 +07 19 50.4          20.0 GVEX139B49
     K20X04C KC2020 12 12.74781800 39 00.63 +07 20 32.0          19.3 GVEX139B49
     K20X04C KC2020 12 12.76838 00 39 00.45 +07 31 00.6          18.9 GVEX139595
     K20X04C KC2020 12 12.77208 00 39 01.38 +07 32 59.4          19.1 GVEX139595
     K20X04C KC2020 12 12.77578 00 39 02.37 +07 34 59.2          18.9 GVEX139595

Observer details:
595 Farra d'Isonzo.  Observer E. Pettarin.  0.40-m f/5.15 reflector + CCD.
B49 Paus Observatory, Sabadell.  Observer J. Camarasa.  0.30-m f/4 reflector +
    CCD.
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, T. Lowe, A. Schultz, M.
    Willman.  Measurers K. Chambers, S. Chastel, T. de Boer, L. Denneau, J.
    Fairlamb, H. Flewelling, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo,
    R. Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
G96 Mt. Lemmon Survey.  Observer K. W. Wierzchos.  Measurers 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, T. A. Pruyne, D.
    Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos.  1.5-m reflector +
    10K CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observer D. Rankin.  Measurers
    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, T. A. Pruyne, D.
    Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos.  1.0-m reflector +
    CCD.
J95 Great Shefford.  Observer P. Birtwhistle.  0.41-m f/6.3 Schmidt-Cassegrain
    + CCD.
L01 Visnjan Observatory, Tican.  Observers K. Korlevic, D. Pujagic.  Measurer
    K. Korlevic.  1.0-m f/2.9 reflector + CCD.

Orbital elements:
2020 XC4                                                 Earth MOID = 0.0052 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres
M  14.49113              (2000.0)            P               Q
n   0.75963355     Peri.  344.29024     +0.43851775     -0.89166535
a   1.1895973      Node    79.58912     +0.83638206     +0.35912461
e   0.1721625      Incl.    6.56252     +0.32888787     +0.27561279
P   1.30           H   26.0           G   0.15           U   6
Residuals in seconds of arc
201209 G96  0.4-  0.2+    201212 L01  0.1-  0.0     201212 B49  0.1-  0.5+
201209 G96  0.2+  1.0+    201212 J95  0.0   0.2-    201212 B49  0.1+  0.3-
201209 G96  0.4-  0.4-    201212 L01  0.0   0.4+    201212 B49  0.9+  0.4-
201209 I52  0.3-  0.0     201212 L01  0.0   0.7+    201212 B49  0.2-  1.1+
201209 I52  0.3+  0.6-    201212 J95  0.2-  0.0     201212 595  0.4-  0.4-
201209 I52  0.5+  0.2+    201212 L01  0.1+  0.4+    201212 595  0.7-  0.5-
201209 I52  0.1+  0.5-    201212 J95  0.3+  0.4-    201212 595  0.1-  0.4+
201212 F51  0.0   0.2-    201212 L01  0.1-  0.2+
201212 F51  0.2+  0.2+    201212 J95  0.1-  0.2+

Ephemeris:
2020 XC4                 a,e,i = 1.19, 0.17, 7                   q = 0.9848
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2020 11 12    23 12 55.8 -61 14 29   0.08053 0.9906    88.2    87.1    23.6
...
2020 11 27    23 38 38.5 -51 50 45   0.04630 0.9845    86.0    91.3    22.5
...
2020 12 05    00 01 01.7 -37 11 49   0.02814 0.9860    90.3    88.0    21.3
...
2020 12 11    00 27 52.2 -07 07 06   0.01782 0.9892   104.2    74.8    19.8
2020 12 12    00 33 55.5 +00 55 06   0.01691 0.9899   108.0    71.1    19.6
2020 12 13    00 40 38.1 +09 40 39   0.01638 0.9907   111.9    67.2    19.4
...
2020 12 19    01 41 29.8 +56 00 25   0.02129 0.9963   125.0    54.0    19.6
...
2020 12 27    04 28 54.5 +75 55 58   0.03855 1.0062   125.4    52.8    20.9
...
2021 01 11    07 59 02.4 +74 02 42   0.07670 1.0321   127.6    49.0    22.3

M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-X139




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