[Iaude] MPEC Y149: 2020 YV4 [a=1.95,e=0.46,i=7.5,H=24.3]

[mpec at marsden.cfa.harvard.edu]

M.P.E.C. 2020-Y149                            Issued 2020 December 28, 17:11 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 YV4                                    


Observations:
     K20Y04V* C2020 12 25.60129509 10 45.539-10 40 09.39         21.70wUEY149F51
     K20Y04V  C2020 12 25.61328209 10 46.964-10 40 48.67         21.63wUEY149F51
     K20Y04V  C2020 12 25.62527909 10 48.369-10 41 28.01         22.03wUEY149F51
     K20Y04V  C2020 12 25.63729209 10 49.828-10 42 06.98         21.56wUEY149F51
     K20Y04V |C2020 12 26.23427 09 12 18.12 -11 13 24.6          21.4 GVEY149807
     K20Y04V |C2020 12 26.24253 09 12 19.08 -11 13 51.1          21.7 GVEY149807
     K20Y04V |C2020 12 26.25075 09 12 20.03 -11 14 17.4          21.7 GVEY149807
     K20Y04V KC2020 12 26.38628 09 12 38.18 -11 22 35.6                oEY149291
     K20Y04V KC2020 12 26.39453 09 12 39.09 -11 23 02.2                oEY149291
     K20Y04V KC2020 12 26.39751 09 12 39.46 -11 23 11.5                oEY149291
     K20Y04V |C2020 12 28.29485 09 16 43.64 -12 56 37.8          21.6 GVEY149807
     K20Y04V |C2020 12 28.30115 09 16 44.21 -12 56 56.2          21.8 GVEY149807
     K20Y04V |C2020 12 28.30716 09 16 44.81 -12 57 13.0          21.7 GVEY149807

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 YV4                                                 Earth MOID = 0.0747 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Alexandersen              
M   0.86507              (2000.0)            P               Q                  
n   0.36147280     Peri.  191.74967     +0.05515976     -0.99053265             
a   1.9517265      Node   255.18421     +0.92629579     +0.09776408             
e   0.4588419      Incl.    7.47139     +0.37273785     -0.09637045             
P   2.73           H   24.37          G   0.15           U   8                  
Residuals in seconds of arc
201225 F51  0.0-  0.0-    201226 807  0.1-  0.1+    201228 807  0.3+  0.3+
201225 F51  0.1+  0.0+    201226 807  0.1-  0.2+    201228 807  0.3-  0.2-
201225 F51  0.2-  0.1-    201226 291  0.3+  0.0-    201228 807  0.0-  0.0-
201225 F51  0.1+  0.1+    201226 291  0.0-  0.4-
201226 807  0.1-  0.0-    201226 291  0.5+  0.3-

Ephemeris:
2020 YV4                 a,e,i = 1.95, 0.46, 7                   q = 1.0562
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2020 11 28    06 45 36.4 +31 35 11   0.1030  1.0727   145.2    31.7    20.9
...
2020 12 13    08 26 15.2 +05 27 23   0.1030  1.0563   132.1    43.7    21.2
...
2020 12 21    08 58 02.1 -05 51 39   0.1176  1.0587   127.0    47.9    21.6
...
2020 12 27    09 13 59.5 -11 53 32   0.1322  1.0655   125.4    48.8    21.9
2020 12 28    09 16 07.0 -12 42 54   0.1348  1.0670   125.3    48.7    22.0
2020 12 29    09 18 06.4 -13 29 27   0.1374  1.0687   125.3    48.7    22.0
...
2021 01 04    09 27 26.9 -17 15 16   0.1541  1.0810   126.0    47.4    22.3
...
2021 01 12    09 34 08.9 -20 18 17   0.1776  1.1034   128.7    44.0    22.5
...
2021 01 27    09 35 24.2 -21 35 16   0.2261  1.1613   137.5    35.0    22.9

M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-Y149