[Iaude] MPEC Y150: 2020 YW4 [a=2.59,e=0.53,i=27.0,H=20.2]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Mon Dec 28 12:16:07 EST 2020


M.P.E.C. 2020-Y150                            Issued 2020 December 28, 17:14 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 YW4                                    


Observations:
     K20Y04W* C2020 12 25.60258809 17 04.843-12 34 23.56         21.61wUEY150F51
     K20Y04W  C2020 12 25.61458809 17 04.606-12 34 06.08         21.89wUEY150F51
     K20Y04W  C2020 12 25.62657209 17 04.371-12 33 48.75         21.69wUEY150F51
     K20Y04W  C2020 12 25.63858709 17 04.134-12 33 31.15         21.78wUEY150F51
     K20Y04W |C2020 12 26.26737 09 16 54.49 -12 18 00.5          21.4 GVEY150807
     K20Y04W |C2020 12 26.27559 09 16 54.31 -12 17 48.4          21.3 GVEY150807
     K20Y04W |C2020 12 26.28380 09 16 54.14 -12 17 36.3          21.4 GVEY150807
     K20Y04W KC2020 12 26.46061 09 16 50.74 -12 13 26.9                oEY150291
     K20Y04W KC2020 12 26.47259 09 16 50.49 -12 13 09.1                oEY150291
     K20Y04W |C2020 12 28.31963 09 16 13.05 -11 25 57.6          21.3 GVEY150807
     K20Y04W |C2020 12 28.32591 09 16 12.86 -11 25 47.9          21.2 GVEY150807
     K20Y04W |C2020 12 28.33193 09 16 12.70 -11 25 38.3          21.4 GVEY150807

Observer details:
291 LPL/Spacewatch II.  Observer R. A. Mastaler.  1.8-m f/2.7 reflector + CCD.
807 Cerro Tololo Observatory, La Serena.  Observers T. Linder, R. Holmes.
    1.00-m f/10.0 astrograph + 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.

Orbital elements:
2020 YW4                                                 Earth MOID = 0.5198 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Alexandersen              
M  16.62104              (2000.0)            P               Q                  
n   0.23597069     Peri.  269.85939     +0.57962800     -0.75983207             
a   2.5935662      Node   139.57471     +0.80143711     +0.59691522             
e   0.5288525      Incl.   27.00328     -0.14741079     +0.25757997             
P   4.18           H   20.24          G   0.15           U   8                  
Residuals in seconds of arc
201225 F51  0.1-  0.0+    201226 807  0.0+  0.0+    201226 291  0.1-  0.1-
201225 F51  0.0-  0.0+    201226 807  0.0-  0.0+    201228 807  0.1+  0.0+
201225 F51  0.0+  0.1-    201226 807  0.1+  0.0+    201228 807  0.1-  0.1-
201225 F51  0.1+  0.0+    201226 291  0.3-  0.1-    201228 807  0.0-  0.1+

Ephemeris:
2020 YW4                 a,e,i = 2.59, 0.53, 27                  q = 1.2220
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2020 11 28    09 05 25.1 -19 34 37   0.7886  1.3493    98.3    46.3    22.1
...
2020 12 13    09 16 24.7 -16 42 59   0.7449  1.4243   110.1    40.5    22.0
...
2020 12 21    09 17 45.0 -14 17 49   0.7216  1.4686   118.1    36.2    21.8
...
2020 12 27    09 16 40.9 -11 59 52   0.7066  1.5035   124.9    32.5    21.7
2020 12 28    09 16 20.3 -11 34 21   0.7044  1.5095   126.1    31.8    21.7
2020 12 29    09 15 56.9 -11 08 07   0.7023  1.5154   127.3    31.1    21.7
...
2021 01 04    09 12 41.2 -08 15 53   0.6926  1.5518   134.9    26.7    21.6
...
2021 01 12    09 06 11.6 -03 50 10   0.6893  1.6017   145.9    20.1    21.5
...
2021 01 27    08 50 24.9 +05 29 02   0.7250  1.6982   166.6     7.7    21.2

M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-Y150




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