[Iaude] MPEC X155: 2020 XW4 [a=2.49,e=0.53,i=23.2,H=21.4]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Sun Dec 13 19:44:46 EST 2020


M.P.E.C. 2020-X155                            Issued 2020 December 14, 00:43 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 XW4                                    


Observations:
     K20X04W  C2020 12 09.53132909 42 59.022+39 38 42.71         21.54GVEX155F51
     K20X04W  C2020 12 09.54569809 43 00.710+39 38 00.91         21.26GVEX155F51
     K20X04W  C2020 12 09.55994909 43 02.379+39 37 18.97         21.58GVEX155F51
     K20X04W  C2020 12 09.57425009 43 04.038+39 36 37.16         21.82GVEX155F51
     K20X04W* C2020 12 10.54733909 45 05.469+38 47 43.93         21.51wUEX155F52
     K20X04W  C2020 12 10.56780009 45 07.768+38 46 41.94         21.44wUEX155F52
     K20X04W  C2020 12 10.57804409 45 08.894+38 46 10.67         20.98wUEX155F52
     K20X04W !C2020 12 12.22911909 48 24.86 +37 18 59.1          20.9 GVEX155J04
     K20X04W !C2020 12 12.23450109 48 25.43 +37 18 41.4          20.9 GVEX155J04
     K20X04W !C2020 12 12.23987609 48 26.01 +37 18 23.5          20.5 GVEX155J04
     K20X04W pC2020 12 13.11483309 50 05.70 +36 29 52.9          21.6 GVEX155L01
     K20X04W KC2020 12 13.11680309 50 05.91 +36 29 46.7          21.5 GVEX155L01
     K20X04W MC2020 12 13.11955909 50 06.23 +36 29 38.1          21.5 GVEX155L01
     K20X04W 1C2020 12 13.99077 09 51 42.85 +35 39 45.4          21.6 VVEX155033
     K20X04W 1C2020 12 13.99436 09 51 43.16 +35 39 33.4          21.4 VVEX155033
     K20X04W 1C2020 12 13.99794 09 51 43.57 +35 39 20.8          21.3 VVEX155033

Observer details:
033 Karl Schwarzschild Observatory, Tautenburg.  Observers S. Melnikov, C.
    Hoegner, B. Stecklum.  Measurer B. Stecklum.  1.34-m f/3 Schmidt + CCD.
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, K. Chambers, T. Lowe, A.
    Schultz, M. Willman.  Measurers S. Chastel, M. Huber, Y. Ramanjooloo, R.
    Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + 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.
J04 ESA Optical Ground Station, Tenerife.  Observer D. Abreu.  Measurers R.
    Kresken, M. Micheli, D. Koschny, L. Conversi, A. Knofel, M. Busch, E.
    Schwab.  1.0-m f/4.4 reflector + CCD.
L01 Visnjan Observatory, Tican.  Observers K. Korlevic, D. Pujagic.  1.0-m
    f/2.9 reflector + CCD.

Orbital elements:
2020 XW4                                                 Earth MOID = 0.2000 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres
M 352.68054              (2000.0)            P               Q
n   0.25106686     Peri.  192.93182     -0.55142465     -0.74991707
a   2.4885314      Node   291.69181     +0.79612565     -0.34218203
e   0.5272005      Incl.   23.16022     +0.24922841     -0.56615885
P   3.93           H   21.4           G   0.15           U   8
Residuals in seconds of arc
201209 F51  0.0   0.0     201210 F52  0.1-  0.2-    201213 L01  0.1-  0.8+
201209 F51  0.0   0.1+    201212 J04  0.1+  0.1+    201213 033  0.6+  0.3-
201209 F51  0.0   0.1-    201212 J04  0.1+  0.0     201213 033  0.2-  0.1+
201209 F51  0.0   0.0     201212 J04  0.3+  0.3-    201213 033  0.3+  0.2-
201210 F52  0.2+  0.3-    201213 L01  0.6-  0.3-
201210 F52  0.2+  0.1-    201213 L01  0.5-  0.2+

Ephemeris:
2020 XW4                 a,e,i = 2.49, 0.53, 23                  q = 1.1766
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2020 11 14    08 29 23.3 +52 48 49   0.6473  1.3675   111.6    42.3    22.8
...
2020 11 29    09 17 07.2 +46 45 47   0.5067  1.2923   116.1    43.3    22.2
...
2020 12 07    09 37 24.4 +41 37 34   0.4393  1.2582   119.0    43.2    21.8
...
2020 12 13    09 49 52.6 +36 36 26   0.3933  1.2360   121.4    42.8    21.5
2020 12 14    09 51 42.7 +35 39 26   0.3861  1.2326   121.9    42.7    21.4
2020 12 15    09 53 28.7 +34 40 20   0.3790  1.2293   122.3    42.6    21.4
...
2020 12 21    10 02 35.1 +27 58 27   0.3400  1.2114   125.0    41.7    21.1
...
2020 12 29    10 10 45.2 +16 47 00   0.2991  1.1930   128.6    40.1    20.7
...
2021 01 13    10 13 45.3 -09 23 27   0.2684  1.1768   130.9    39.2    20.5

M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-X155




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