[Iaude] MPEC X159: 2020 XZ4 [a=1.18,e=0.28,i=7.6,H=24.6]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Sun Dec 13 23:35:11 EST 2020


M.P.E.C. 2020-X159                            Issued 2020 December 14, 04:34 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 XZ4                                    


Observations:
     K20X04Z* C2020 12 11.46237806 38 31.969+57 42 29.43         21.09wUEX159F51
     K20X04Z  C2020 12 11.47490306 38 33.411+57 42 50.46         21.11wUEX159F51
     K20X04Z  C2020 12 11.48745906 38 34.830+57 43 11.00         21.17wUEX159F51
     K20X04Z  C2020 12 11.50002006 38 36.271+57 43 31.28         21.04wUEX159F51
     K20X04Z KC2020 12 12.32294906 41 17.96 +58 06 04.0          20.07GVEX159I52
     K20X04Z KC2020 12 12.32547606 41 18.32 +58 06 07.9          20.36GVEX159I52
     K20X04Z KC2020 12 12.32799806 41 18.74 +58 06 12.8          20.81GVEX159I52
     K20X04Z  C2020 12 12.46134706 41 45.585+58 10 19.74         20.77GVEX159F51
     K20X04Z  C2020 12 12.47968406 41 47.981+58 10 52.06         20.82GVEX159F51
     K20X04Z KC2020 12 12.82353806 43 08.05 +58 19 33.6          20.6 GVEX159L01
     K20X04Z KC2020 12 12.82827606 43 08.95 +58 19 43.6          20.5 GVEX159L01
     K20X04Z KC2020 12 12.88815406 43 21.54 +58 21 41.7          20.0 GVEX159B49
     K20X04Z KC2020 12 12.89570006 43 22.78 +58 21 57.9          20.5 GVEX159B49
     K20X04Z 1C2020 12 13.76719 06 46 42.03 +58 47 41.7          20.8 VVEX159033
     K20X04Z 1C2020 12 13.76927 06 46 42.59 +58 47 46.6          20.6 VVEX159033
     K20X04Z 1C2020 12 13.77135 06 46 43.07 +58 47 51.0          21.1 VVEX159033
     K20X04Z 1C2020 12 13.77349 06 46 43.60 +58 47 55.8          21.0 VVEX159033
     K20X04Z KC2020 12 13.91374 06 47 15.41 +58 53 12.9          20.4 GVEX159204
     K20X04Z HC2020 12 13.93778 06 47 20.17 +58 54 04.6                VEX159204
     K20X04Z 4C2020 12 14.00613 06 47 38.64 +58 56 43.1          20.3 GVEX159J04
     K20X04Z 4C2020 12 14.00807 06 47 39.01 +58 56 47.5          20.5 GVEX159J04
     K20X04Z 4C2020 12 14.01001 06 47 39.32 +58 56 51.6          20.5 GVEX159J04

Observer details:
033 Karl Schwarzschild Observatory, Tautenburg.  Observers S. Melnikov, C.
    Hoegner, B. Stecklum.  Measurer B. Stecklum.  1.34-m f/3 Schmidt + CCD.
204 Schiaparelli Observatory.  Observer L. Buzzi.  0.84-m f/3.5 reflector +
    CCD.
B49 Paus Observatory, Sabadell.  Observer J. Camarasa.  0.30-m f/4 reflector +
    CCD.
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, T. Lowe, A. Schultz, M.
    Willman, K. Chambers.  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.
J04 ESA Optical Ground Station, Tenerife.  Observer P. Ruiz.  Measurers A.
    Knofel, D. Koschny, M. Busch, M. Micheli, E. Schwab, R. Kresken.  1.0-m
    f/4.4 reflector + CCD.
L01 Visnjan Observatory, Tican.  Observers K. Korlevic, D. Pujagic.  Measurer
    D. Pujagic.  1.0-m f/2.9 reflector + CCD.

Orbital elements:
2020 XZ4                                                 Earth MOID = 0.0100 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres
M 310.00494              (2000.0)            P               Q
n   0.77371282     Peri.  242.95484     -0.96059865     -0.24640944
a   1.1751217      Node   282.55126     +0.27784029     -0.86366753
e   0.2768745      Incl.    7.56941     -0.00741610     -0.43972808
P   1.27           H   24.6           G   0.15           U   7
Residuals in seconds of arc
201211 F51  0.1-  0.0     201212 F51  0.2+  0.1-    201213 033  0.3-  0.2-
201211 F51  0.0   0.0     201212 L01  0.5+  0.1-    201213 204  0.0   0.3+
201211 F51  0.0   0.1-    201212 L01  0.4+  0.1-    201213 204  0.3+  0.2+
201211 F51  0.1+  0.0     201212 B49 (0.1+  1.9-)   201214 J04  0.3+  0.0
201212 I52  0.9-  0.4+    201212 B49 (0.9-  1.7-)   201214 J04  0.4+  0.1+
201212 I52  0.7-  0.3-    201213 033  0.7-  0.1-    201214 J04  0.1+  0.1-
201212 I52  0.1-  0.1+    201213 033  0.3-  0.1+
201212 F51  0.1+  0.1+    201213 033  0.4-  0.2-

Ephemeris:
2020 XZ4                 a,e,i = 1.18, 0.28, 8                   q = 0.8498
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2020 11 14    05 51 32.5 +49 15 33   0.2505  1.1830   136.2    35.4    23.4
...
2020 11 29    06 13 16.6 +53 18 49   0.1598  1.1159   141.6    33.3    22.3
...
2020 12 07    06 27 16.7 +55 53 56   0.1157  1.0794   142.6    33.7    21.5
...
2020 12 13    06 43 37.3 +58 25 01   0.08436 1.0521   141.8    35.4    20.8
2020 12 14    06 47 29.9 +58 55 47   0.07926 1.0475   141.5    35.8    20.7
2020 12 15    06 51 56.4 +59 28 54   0.07419 1.0430   141.0    36.4    20.5
...
2020 12 21    07 45 09.5 +64 04 29   0.04458 1.0161   135.6    42.6    19.5
...
2020 12 29    14 36 22.3 +36 19 46   0.01398 0.9814    81.5    97.7    18.8
...
2021 01 13    17 28 00.5 -43 43 39   0.07547 0.9226    34.9   142.4    26.0

M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-X159




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