[Iaude] MPEC X140: 2020 XD4 [a=1.38,e=0.64,i=39.6,H=20.2]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Sat Dec 12 14:14:30 EST 2020


M.P.E.C. 2020-X140                            Issued 2020 December 12, 19:13 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 XD4                                    


Observations:
     K20X04D* C2020 12 09.42760605 02 03.496-03 39 00.92         22.16wUEX140F51
     K20X04D  C2020 12 09.44024405 02 01.578-03 39 19.49         22.22wUEX140F51
     K20X04D  C2020 12 09.45284105 01 59.653-03 39 37.96         22.81wUEX140F51
     K20X04D  C2020 12 09.46542505 01 57.715-03 39 56.35         22.74wUEX140F51
     K20X04D |C2020 12 10.13066 05 00 18.43 -03 56 02.4          21.5 GVEX140807
     K20X04D |C2020 12 10.13973 05 00 17.05 -03 56 15.7          21.5 GVEX140807
     K20X04D |C2020 12 10.14841 05 00 15.71 -03 56 28.3          21.9 GVEX140807
     K20X04D KC2020 12 10.20371505 00 07.36 -03 57 59.1          22.4 VuEX140H21
     K20X04D KC2020 12 10.21060905 00 06.28 -03 58 09.1          21.9 VuEX140H21
     K20X04D KC2020 12 10.21486705 00 05.63 -03 58 15.4          22.1 VuEX140H21
     K20X04D  C2020 12 10.36113304 59 43.809-04 01 45.90         21.91GVEX140F52
     K20X04D  C2020 12 10.39225604 59 39.041-04 02 31.08         21.84GVEX140F52
     K20X04D |C2020 12 11.17009 04 57 41.79 -04 21 07.7          22.3 GVEX140807
     K20X04D |C2020 12 11.17440 04 57 41.11 -04 21 13.8          22.2 GVEX140807
     K20X04D |C2020 12 11.17893 04 57 40.40 -04 21 20.5          22.2 GVEX140807
     K20X04D |C2020 12 12.16254 04 55 11.58 -04 44 44.8          22.2 GVEX140807
     K20X04D |C2020 12 12.16849 04 55 10.66 -04 44 53.5          22.2 GVEX140807
     K20X04D |C2020 12 12.17445 04 55 09.74 -04 45 02.0          22.2 GVEX140807

Observer details:
807 Cerro Tololo Observatory, La Serena.  Observers T. Linder, R. Holmes.
    1.00-m f/10.0 astrograph + 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.
F52 Pan-STARRS 2, Haleakala.  Observers J. Bulger, K. Chambers, T. Dukes, T.
    Lowe, A. Schultz, M. Willman.  Measurers S. Chastel, M. Huber, Y.
    Ramanjooloo, R. Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes.  1.3-m f/4.0
    astrograph + CCD.

Orbital elements:
2020 XD4                                                 Earth MOID = 0.5128 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres
M 267.53959              (2000.0)            P               Q
n   0.60971889     Peri.  353.97360     -0.57313076     +0.60724829
a   1.3773668      Node   239.58827     -0.72268229     -0.69110854
e   0.6375340      Incl.   39.64530     -0.38633073     +0.39194196
P   1.62           H   20.2           G   0.15           U   8
Residuals in seconds of arc
201209 F51  0.1-  0.0     201210 807  0.2+  0.0     201211 807  0.3+  0.1+
201209 F51  0.1+  0.0     201210 H21  0.1+  0.0     201211 807  0.0   0.2+
201209 F51  0.1+  0.0     201210 H21  0.3-  0.1+    201211 807  0.1-  0.0
201209 F51  0.1-  0.1+    201210 H21  0.3-  0.0     201212 807  0.0   0.2+
201210 807  0.2+  0.0     201210 F52  0.3-  0.2-    201212 807  0.0   0.1-
201210 807  0.4+  0.1-    201210 F52  0.1-  0.1-    201212 807  0.0   0.1-

Ephemeris:
2020 XD4                 a,e,i = 1.38, 0.64, 40                  q = 0.4992
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2020 11 12    05 55 36.6 +07 39 52   1.1828  2.0316   138.3    18.9    23.1
...
2020 11 27    05 30 41.2 +01 37 00   1.0340  1.9634   152.6    13.4    22.5
...
2020 12 05    05 12 51.5 -01 48 11   0.9842  1.9229   155.0    12.5    22.3
...
2020 12 11    04 58 07.5 -04 17 06   0.9617  1.8906   152.5    13.9    22.3
2020 12 12    04 55 36.3 -04 40 57   0.9592  1.8850   151.8    14.3    22.3
2020 12 13    04 53 04.5 -05 04 27   0.9570  1.8794   150.9    14.7    22.3
...
2020 12 19    04 37 52.6 -07 16 25   0.9512  1.8449   144.9    17.9    22.4
...
2020 12 27    04 18 29.9 -09 42 37   0.9607  1.7960   135.0    22.8    22.5
...
2021 01 11    03 49 06.6 -12 34 19   1.0168  1.6958   115.9    31.4    22.7

M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-X140




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