[Iaude] MPEC X144: 2020 XH4 [a=1.48,e=0.21,i=12.7,H=23.1]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Sat Dec 12 23:34:11 EST 2020


M.P.E.C. 2020-X144                            Issued 2020 December 13, 04:33 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 XH4                                    


Observations:
     K20X04H* C2020 12 10.40074305 40 31.928+01 12 16.70         21.32wUEX144F52
     K20X04H  C2020 12 10.41104505 40 31.397+01 12 47.46         20.96wUEX144F52
     K20X04H  C2020 12 10.43174105 40 30.319+01 13 49.25         21.21wUEX144F52
     K20X04H |C2020 12 11.25958 05 39 59.08 +01 56 12.5          20.7 VuEX144807
     K20X04H |C2020 12 11.26368 05 39 58.86 +01 56 25.2          20.7 VuEX144807
     K20X04H |C2020 12 11.26767 05 39 58.66 +01 56 37.3          20.7 VuEX144807
     K20X04H |C2020 12 12.21384 05 39 23.34 +02 46 01.0          20.8 VuEX144807
     K20X04H |C2020 12 12.21813 05 39 23.09 +02 46 14.8          21.2 VuEX144807
     K20X04H |C2020 12 12.22261 05 39 22.86 +02 46 29.1          21.0 VuEX144807
     K20X04H KC2020 12 12.23588605 39 23.82 +02 46 26.7          20.05GVEX144I52
     K20X04H KC2020 12 12.23840905 39 23.67 +02 46 34.2          20.37GVEX144I52
     K20X04H KC2020 12 12.24093105 39 23.53 +02 46 42.8          20.29GVEX144I52
     K20X04H KC2020 12 12.24345305 39 23.44 +02 46 51.2          20.51GVEX144I52
     K20X04H IC2020 12 12.87488905 38 58.53 +03 20 39.8          20.8 GVEX144L01
     K20X04H IC2020 12 12.87971205 38 58.24 +03 20 55.4          21.1 GVEX144L01
     K20X04H hC2020 12 12.90578105 38 56.93 +03 22 19.8          20.9 GVEX144L01

Observer details:
807 Cerro Tololo Observatory, La Serena.  Observers T. Linder, R. Holmes.
    0.61-m f/6.5 astrograph + CCD.
F52 Pan-STARRS 2, Haleakala.  Observers J. Bulger, T. Dukes, 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.
I52 Steward Observatory, Mt. Lemmon Station.  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.  1.0-m reflector +
    CCD.
L01 Visnjan Observatory, Tican.  Observers K. Korlevic, D. Pujagic.  1.0-m
    f/2.9 reflector + CCD.

Orbital elements:
2020 XH4                                                 Earth MOID = 0.1812 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres
M 349.72464              (2000.0)            P               Q
n   0.54971264     Peri.    4.08986     -0.18520246     -0.95806562
a   1.4758614      Node    96.68442     +0.89524920     -0.25624947
e   0.2111242      Incl.   12.71798     +0.40525167     +0.12824384
P   1.79           H   23.1           G   0.15           U   7
Residuals in seconds of arc
201210 F52  0.0   0.1-    201212 807  0.2-  0.2-    201212 I52  0.4+  0.4+
201210 F52  0.1+  0.0     201212 807  0.4-  0.1-    201212 L01  0.4+  0.4+
201210 F52  0.0   0.1+    201212 807  0.2-  0.1-    201212 L01  0.2-  0.3+
201211 807  0.1+  0.0     201212 I52  0.1+  0.1+    201212 L01  0.3+  0.5-
201211 807  0.0   0.1+    201212 I52  0.1-  0.5-
201211 807  0.1+  0.0     201212 I52  0.2-  0.1+

Ephemeris:
2020 XH4                 a,e,i = 1.48, 0.21, 13                  q = 1.1643
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2020 11 13    05 40 54.7 -10 35 48   0.3094  1.2241   133.7    35.7    22.5
...
2020 11 28    05 44 50.3 -06 35 34   0.2463  1.1959   144.6    28.5    21.7
...
2020 12 06    05 42 46.7 -02 06 53   0.2196  1.1841   152.3    22.7    21.3
...
2020 12 12    05 39 31.8 +02 34 17   0.2039  1.1770   158.8    17.6    20.9
2020 12 13    05 38 52.4 +03 27 55   0.2018  1.1760   159.9    16.7    20.9
2020 12 14    05 38 11.3 +04 23 25   0.1997  1.1750   161.0    15.9    20.8
...
2020 12 20    05 33 43.8 +10 31 47   0.1906  1.1699   166.4    11.4    20.5
...
2020 12 28    05 27 53.0 +19 45 00   0.1872  1.1656   165.6    12.1    20.5
...
2021 01 12    05 23 34.8 +36 04 38   0.2079  1.1655   148.3    26.3    21.2

M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-X144




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