[Iaude] MPEC X81: 2020 XJ2 [a=2.52,e=0.58,i=9.0,H=24.2]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Wed Dec 9 04:07:39 EST 2020


M.P.E.C. 2020-X81                              Issued 2020 December 9, 09:06 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 XJ2                                    


Observations:
     K20X02J* C2020 12 07.23043902 31 28.873+29 39 41.38         20.68wUEX081F51
     K20X02J  C2020 12 07.25736802 31 46.594+29 38 11.33         20.83wUEX081F51
     K20X02J  C2020 12 07.27078502 31 55.396+29 37 25.97         20.97wUEX081F51
     K20X02J KC2020 12 08.41444 02 44 48.72 +28 28 24.7          20.9 RoEX081291
     K20X02J KC2020 12 08.41656 02 44 50.12 +28 28 16.6          21.0 RoEX081291
     K20X02J KC2020 12 08.41869 02 44 51.54 +28 28 08.0          21.5 RoEX081291
     K20X02J 1C2020 12 08.75458 02 48 44.92 +28 07 08.8          20.6 VVEX081033
     K20X02J 1C2020 12 08.75632 02 48 46.06 +28 07 02.6          20.3 VVEX081033
     K20X02J KC2020 12 09.11826502 52 47.38 +27 44 35.2          21.1 VqEX081858
     K20X02J KC2020 12 09.12756902 52 53.35 +27 43 59.8          20.8 VqEX081858
     K20X02J KC2020 12 09.36433802 55 23.85 +27 28 45.3          20.62GVEX081I52
     K20X02J KC2020 12 09.36601702 55 24.95 +27 28 38.8          20.29GVEX081I52
     K20X02J KC2020 12 09.36769902 55 26.03 +27 28 31.9          20.78GVEX081I52
     K20X02J KC2020 12 09.36938002 55 27.15 +27 28 25.2          20.36GVEX081I52

Observer details:
033 Karl Schwarzschild Observatory, Tautenburg.  Observers S. Melnikov, C.
    Hoegner, B. Stecklum.  Measurer B. Stecklum.  1.34-m f/3 Schmidt + CCD.
291 LPL/Spacewatch II.  Observer M. T. Read.  1.8-m f/2.7 reflector + CCD.
858 Tebbutt Observatory, Edgewood.  Observer F. B. Zoltowski.  0.51-m Schmidt-
    Cassegrain + 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.
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.

Orbital elements:
2020 XJ2                                                 Earth MOID = 0.0948 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Bell                    
M   5.06276              (2000.0)            P               Q                  
n   0.24573193     Peri.  158.88564     +0.49145775     -0.85719276             
a   2.5244202      Node   261.39186     +0.77507233     +0.51108991             
e   0.5761637      Incl.    8.95558     +0.39715509     +0.06330620             
P   4.01           H   24.29          G   0.15           U   8                  
Residuals in seconds of arc
201207 F51  0.0-  0.1-    201208 291  0.1-  0.1-    201209 858  0.2+  0.3-
201207 F51  0.0-  0.1-    201208 291  0.1-  0.5-    201209 I52  0.3-  0.1-
201207 F51  0.0-  0.1+    201208 033  0.0+  0.2+    201209 I52  0.1-  0.1+
201207 F51  0.0-  0.1+    201208 033  0.1+  0.3+    201209 I52  0.0+  0.0+
201207 F51  0.1+  0.0+    201209 858  0.4-  0.4+    201209 I52  0.5+  0.0-
201207 F51  0.0+  0.0+    201209 858  0.4-  0.4+
201208 291  0.0+  0.3-    201209 858  0.2+  0.3-

Ephemeris:
2020 XJ2                 a,e,i = 2.52, 0.58, 9                   q = 1.0699
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2020 11 09    22 45 08.5 +34 50 13   0.1749  1.0921   121.5    50.7    22.6
...
2020 11 24    00 09 21.3 +36 04 43   0.1276  1.0704   127.9    46.7    21.7
...
2020 12 02    01 30 40.2 +33 43 07   0.1122  1.0723   138.3    37.7    21.2
...
2020 12 08    02 40 12.2 +28 54 12   0.1098  1.0799   148.2    28.8    20.9
2020 12 09    02 51 25.8 +27 52 21   0.1103  1.0817   149.7    27.3    20.9
2020 12 10    03 02 23.6 +26 47 53   0.1112  1.0836   151.3    25.9    20.9
...
2020 12 16    04 00 39.4 +20 01 26   0.1218  1.0980   157.9    19.7    20.9
...
2020 12 24    04 56 24.2 +12 20 34   0.1493  1.1244   159.3    18.0    21.4
...
2021 01 08    05 54 48.7 +04 56 13   0.2294  1.1934   153.7    21.4    22.5

M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-X81




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