[Iaude] MPEC X148: 2020 XJ4 [a=1.23,e=0.18,i=3.1,H=24.7]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Sun Dec 13 13:55:36 EST 2020


M.P.E.C. 2020-X148                            Issued 2020 December 13, 18:54 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 XJ4                                    


Observations:
     K20X04J* C2020 12 09.26390523 45 56.844+25 44 11.97         22.29wUEX148F51
     K20X04J  C2020 12 09.27655423 46 00.391+25 44 55.08         21.79wUEX148F51
     K20X04J  C2020 12 09.28923523 46 03.945+25 45 37.45         22.25wUEX148F51
     K20X04J  C2020 12 09.30196823 46 07.552+25 46 20.41         22.08wUEX148F51
     K20X04J KC2020 12 10.05765623 50 10.46 +26 29 25.1          22.0 VuEX148H21
     K20X04J KC2020 12 10.06316223 50 12.14 +26 29 43.8          22.4 VuEX148H21
     K20X04J  C2020 12 10.21017223 51 00.658+26 38 38.81         22.11GVEX148T12
     K20X04J  C2020 12 10.21191223 51 01.149+26 38 44.82         22.06GVEX148T12
     K20X04J KC2020 12 13.07686600 06 54.08 +29 17 23.7          21.59GVEX148V06
     K20X04J KC2020 12 13.08175200 06 55.55 +29 17 39.0          21.42GVEX148V06
     K20X04J KC2020 12 13.08663700 06 57.06 +29 17 54.7          22.04GVEX148V06
     K20X04J KC2020 12 13.09152200 06 58.60 +29 18 10.9          21.58GVEX148V06
     K20X04J IC2020 12 13.73536100 10 40.93 +29 52 14.3          21.9 GVEX148L01
     K20X04J pC2020 12 13.73927200 10 42.21 +29 52 26.7          21.7 GVEX148L01
     K20X04J pC2020 12 13.75602000 10 47.48 +29 53 19.4          22.0 GVEX148L01

Observer details:
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.
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.
L01 Visnjan Observatory, Tican.  Observers K. Korlevic, D. Pujagic.  1.0-m
    f/2.9 reflector + CCD.
T12 Mauna Kea-UH/Tholen NEO Follow-Up (2.24-m).  Observer D. Fohring.
    Measurer D. J. Tholen.  2.24-m f/10.1 reflector + CCD.
V06 Catalina Sky Survey-Kuiper.  Observer D. C. Fuls.  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.  1.55-m reflector +
    1K CCD.

Orbital elements:
2020 XJ4                                                 Earth MOID = 0.0299 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres
M  17.58573              (2000.0)            P               Q
n   0.72198411     Peri.   30.68751     +0.56902074     -0.82200918
a   1.2306020      Node    24.65254     +0.74297655     +0.50207695
e   0.1765580      Incl.    3.12275     +0.35242199     +0.26873712
P   1.37           H   24.7           G   0.15           U   7
Residuals in seconds of arc
201209 F51  0.1-  0.0     201210 H21  0.6+  0.0     201213 V06  0.1+  0.3-
201209 F51  0.0   0.3+    201210 T12  0.0   0.1-    201213 V06  0.6+  0.2+
201209 F51  0.1-  0.1-    201210 T12  0.0   0.0     201213 L01  0.4-  0.3+
201209 F51  0.0   0.2+    201213 V06  0.3+  0.3+    201213 L01  0.1+  0.2+
201210 H21  0.5-  0.1-    201213 V06  0.1-  0.2-    201213 L01  0.6-  0.1-

Ephemeris:
2020 XJ4                 a,e,i = 1.23, 0.18, 3                   q = 1.0133
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2020 11 13    22 03 36.3 -00 12 15   0.1025  1.0157   101.9    72.5    22.3
...
2020 11 28    22 53 50.6 +14 19 30   0.09722 1.0140   103.7    70.9    22.2
...
2020 12 06    23 29 25.8 +22 30 58   0.09747 1.0178   106.9    67.9    22.1
...
2020 12 12    00 00 48.7 +28 18 47   0.09968 1.0227   109.9    64.9    22.0
2020 12 13    00 06 27.2 +29 13 17   0.1002  1.0237   110.4    64.3    22.0
2020 12 14    00 12 12.7 +30 06 32   0.1009  1.0247   110.9    63.8    22.0
...
2020 12 20    00 49 03.5 +34 55 14   0.1058  1.0319   114.3    60.3    22.0
...
2020 12 28    01 42 48.1 +39 38 55   0.1157  1.0438   118.6    55.8    22.1
...
2021 01 12    03 23 57.6 +42 53 07   0.1453  1.0725   124.5    49.1    22.5

M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-X148




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