[Iaude] MPEC X142: 2020 XF4 [a=1.05,e=0.23,i=3.0,H=27.4]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Sat Dec 12 23:32:07 EST 2020


M.P.E.C. 2020-X142                            Issued 2020 December 13, 04:30 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 XF4                                    


Observations:
     K20X04F  C2020 12 05.43588 05 37 25.70 +09 39 21.5                VEX142G96
     K20X04F  C2020 12 05.44099 05 37 25.16 +09 39 17.0          21.9 GVEX142G96
     K20X04F  C2020 12 05.44611 05 37 24.59 +09 39 12.3          21.4 GVEX142G96
     K20X04F* C2020 12 10.30036005 29 45.64 +08 06 45.3          20.09rUEX142I41
     K20X04F  C2020 12 10.30223005 29 45.07 +08 06 41.4          20.19rUEX142I41
     K20X04F  C2020 12 10.33938005 29 33.50 +08 05 30.3          21.07gUEX142I41
     K20X04F  C2020 12 10.34030005 29 33.22 +08 05 28.5          20.83gUEX142I41
     K20X04F  C2020 12 11.28426 05 26 18.09 +07 29 05.3          18.7 GVEX142U68
     K20X04F  C2020 12 11.28818 05 26 16.56 +07 28 54.4          18.7 GVEX142U68
     K20X04F  C2020 12 11.29182 05 26 15.09 +07 28 44.4          18.8 GVEX142U68
     K20X04F  C2020 12 11.29575 05 26 13.57 +07 28 35.6          18.8 GVEX142U68
     K20X04F  C2020 12 11.33827 05 25 56.29 +07 26 40.7          18.6 GVEX142U68
     K20X04F  C2020 12 11.34219 05 25 54.71 +07 26 30.1          18.6 GVEX142U68
     K20X04F KC2020 12 12.92565005 16 13.45 +05 41 18.6          18.7 GVEX142J95
     K20X04F KC2020 12 12.92998905 16 10.47 +05 40 54.2          18.8 GVEX142J95
     K20X04F KC2020 12 12.93406605 16 07.69 +05 40 31.6          18.8 GVEX142J95
     K20X04F KC2020 12 12.93811005 16 04.83 +05 40 08.8          19.1 GVEX142J95
     K20X04F KC2020 12 12.95450205 15 52.80 +05 40 00.8          19.2 GVEX142B49
     K20X04F KC2020 12 12.95973405 15 48.92 +05 39 31.7          18.8 GVEX142B49
     K20X04F 2C2020 12 12.96571305 15 56.854+05 41 01.84         18.8 GVEX142J04
     K20X04F 2C2020 12 12.96595305 15 56.678+05 41 00.64         18.8 GVEX142J04
     K20X04F 2C2020 12 12.96619805 15 56.482+05 40 59.19         18.8 GVEX142J04
     K20X04F KC2020 12 13.00156505 15 11.28 +05 34 55.6          18.9 GVEX142L01
     K20X04F KC2020 12 13.00209205 15 10.90 +05 34 52.3          18.7 GVEX142L01
     K20X04F KC2020 12 13.00313505 15 10.07 +05 34 46.3          19.0 GVEX142L01
     K20X04F KC2020 12 13.00365705 15 09.71 +05 34 43.3          19.0 GVEX142L01
     K20X04F KC2020 12 13.00457005 15 09.01 +05 34 37.8          19.0 GVEX142L01
     K20X04F  C2020 12 13.03549 05 14 44.00 +05 31 06.8          18.7 RoEX142K88
     K20X04F  C2020 12 13.03638 05 14 43.31 +05 31 01.3          18.8 RoEX142K88
     K20X04F  C2020 12 13.03815 05 14 42.06 +05 30 49.3          18.8 RoEX142K88

Observer details:
B49 Paus Observatory, Sabadell.  Observer J. Camarasa.  0.30-m f/4 reflector +
    CCD.
G96 Mt. Lemmon Survey.  Observer T. A. Pruyne.  Measurers D. Rankin, B. Gray,
    F. C. Shelly.  1.5-m reflector + 10K CCD.
I41 Palomar Mountain--ZTF.  Observers B. T. Bolin, Z. T. F. Collaboration.
    Measurers B. T. Bolin, F. J. Masci.  1.2-m f/2.4 Schmidt.
J04 ESA Optical Ground Station, Tenerife.  Observer D. Abreu.  Measurers M.
    Micheli, D. Koschny, L. Conversi, R. Kresken, A. Knofel, M. Busch, E.
    Schwab.  1.0-m f/4.4 reflector + CCD.
J95 Great Shefford.  Observer P. Birtwhistle.  0.41-m f/6.3 Schmidt-Cassegrain
    + CCD.
K88 GINOP-KHK, Piszkesteto.  Observer K. Sarneczky.  0.60-m Schmidt + CCD.
L01 Visnjan Observatory, Tican.  Observers K. Korlevic, D. Pujagic.  Measurer
    D. Pujagic.  1.0-m f/2.9 reflector + CCD.
U68 JPL SynTrack Robotic Telescope, Auberry.  Observers N. Saini, C. Zhai, R.
    Trahan, M. Zhan, M. Shao.  0.28-m f/2.2 Schmidt + CCD.

Orbital elements:
2020 XF4                                                 Earth MOID = 0.0006 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres
M 300.01875              (2000.0)            P               Q
n   0.91029399     Peri.   84.73093     -0.98534127     -0.16243969
a   1.0544231      Node    85.91327     +0.12836634     -0.90719435
e   0.2287130      Incl.    2.99492     +0.11235953     -0.38808731
P   1.08           H   27.4           G   0.15           U   6
Residuals in seconds of arc
201205 G96  0.2+  0.3+    201211 U68  0.7+  0.8+    201212 J04  0.0   0.2+
201205 G96  0.4+  0.0     201211 U68  0.2+  0.1+    201212 J04  0.1-  0.1+
201205 G96  0.1+  0.4-    201211 U68  0.6+  0.3+    201213 L01  0.1+  0.1+
201210 I41  0.6-  0.0     201212 J95  0.2-  0.4+    201213 L01  0.3+  0.1-
201210 I41  0.5-  0.4-    201212 J95  0.1-  0.0     201213 L01  0.4-  0.1+
201210 I41  0.8-  0.1-    201212 J95  0.5+  0.0     201213 L01  0.0   0.2+
201210 I41  0.7-  0.0     201212 J95  0.3-  0.4-    201213 L01  0.2-  0.2+
201211 U68  0.2+  0.5+    201212 B49  0.4+  0.5-    201213 K88  0.2+  0.2+
201211 U68  0.5+  0.2-    201212 B49  0.7+  0.1-    201213 K88  0.4-  0.2+
201211 U68  0.1+  0.7-    201212 J04  0.1-  0.1+    201213 K88  0.1+  1.0-

Ephemeris:
2020 XF4                 a,e,i = 1.05, 0.23, 3                   q = 0.8133
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2020 11 13    05 35 27.7 +12 08 45   0.1397  1.1073   145.3    30.6    24.7
...
2020 11 28    05 40 10.7 +10 43 18   0.07316 1.0544   157.2    21.2    22.9
...
2020 12 06    05 37 03.1 +09 33 54   0.04079 1.0244   163.0    16.4    21.4
...
2020 12 12    05 22 39.4 +06 56 29   0.01743 1.0013   163.8    15.9    19.5
2020 12 13    05 15 21.7 +05 42 02   0.01360 0.9975   162.5    17.3    19.0
2020 12 14    05 02 28.3 +03 30 26   0.0098200.9936   159.5    20.3    18.4
...
2020 12 20    18 12 16.7 -14 43 45   0.01382 0.9702     9.9   170.0    35.0
...
2020 12 28    17 48 39.5 -11 20 40   0.04494 0.9401    15.2   164.1    33.2
...
2021 01 12    17 47 48.5 -11 34 02   0.1089  0.8881    27.3   149.5    30.7

M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-X142




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