[Iaude] MPEC Y125: 2020 YA4 [a=1.45,e=0.33,i=4.2,H=26.6]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Fri Dec 25 11:01:46 EST 2020


M.P.E.C. 2020-Y125                            Issued 2020 December 25, 16:00 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 YA4                                    


Observations:
     K20Y04A* C2020 12 23.50505412 22 28.31 +16 48 56.9          20.95GVEY125G96
     K20Y04A  C2020 12 23.51067712 22 22.49 +16 50 26.1          19.74GVEY125G96
     K20Y04A  C2020 12 23.51630112 22 16.50 +16 51 56.7          20.37GVEY125G96
     K20Y04A  C2020 12 23.52192112 22 10.60 +16 53 25.4                VEY125G96
     K20Y04A KC2020 12 23.54015412 21 51.25 +16 58 13.3          19.81GVEY125V06
     K20Y04A KC2020 12 23.54096712 21 50.39 +16 58 25.9          20.19GVEY125V06
     K20Y04A KC2020 12 23.54178012 21 49.53 +16 58 38.9          20.21GVEY125V06
     K20Y04A KC2020 12 23.54260512 21 48.65 +16 58 51.7          20.56GVEY125V06
     K20Y04A mC2020 12 24.47467912 10 30.38 +20 23 43.1          21.10GVEY125G96
     K20Y04A mC2020 12 24.47508512 10 30.02 +20 23 47.5          20.30GVEY125G96
     K20Y04A mC2020 12 24.47549112 10 29.76 +20 23 52.3          20.52GVEY125G96
     K20Y04A mC2020 12 24.47589712 10 29.36 +20 23 57.1          19.98GVEY125G96
     K20Y04A KC2020 12 25.10493712 04 16.66 +22 07 54.8          20.7 GVEY125J95
     K20Y04A KC2020 12 25.11311012 04 11.52 +22 09 14.6          19.9 GVEY125J95
     K20Y04A KC2020 12 25.12164412 04 06.10 +22 10 37.3          20.5 GVEY125J95
     K20Y04A KC2020 12 25.13023812 04 00.54 +22 11 59.7          20.8 GVEY125J95
     K20Y04A KC2020 12 25.43297 12 01 18.98 +22 57 52.9          20.2 RqEY125H36
     K20Y04A KC2020 12 25.44184 12 01 13.23 +22 59 09.6          20.4 RqEY125H36
     K20Y04A KC2020 12 25.45064 12 01 07.59 +23 00 26.2          20.0 RqEY125H36

Observer details:
G96 Mt. Lemmon Survey.  Observers D. Rankin, T. A. Pruyne.  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.  1.5-m reflector +
    10K CCD.
H36 Sandlot Observatory, Scranton.  Observer G. Hug.  0.56-m reflector + CCD.
J95 Great Shefford.  Observer P. Birtwhistle.  0.41-m f/6.3 Schmidt-Cassegrain
    + CCD.
V06 Catalina Sky Survey-Kuiper.  Observer G. J. Leonard.  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.  1.55-m reflector +
    1K CCD.

Orbital elements:
2020 YA4                                                 Earth MOID = 0.0028 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres
M   5.65657              (2000.0)            P               Q
n   0.56735720     Peri.  344.21561     +0.28633190     -0.95534995
a   1.4451015      Node    89.10257     +0.88677245     +0.23540847
e   0.3283275      Incl.    4.18349     +0.36283420     +0.17857583
P   1.74           H   26.6           G   0.15           U   7
Residuals in seconds of arc
201223 G96  1.1-  0.4+    201223 V06  0.2-  0.0     201225 J95  0.2+  0.2+
201223 G96  0.6+  0.5-    201224 G96  0.5+  0.4+    201225 J95  0.7-  0.1-
201223 G96  0.1-  0.4+    201224 G96  0.1+  0.0     201225 H36  0.4+  0.1+
201223 G96  0.5+  0.3-    201224 G96  1.0+  0.1+    201225 H36  0.0   0.4-
201223 V06  0.0   0.1-    201224 G96  0.0   0.1+    201225 H36  0.8+  0.2+
201223 V06  0.0   0.2-    201225 J95  0.2-  0.2-
201223 V06  0.0   0.1+    201225 J95  0.2+  0.1+

Ephemeris:
2020 YA4                 a,e,i = 1.45, 0.33, 4                   q = 0.9706
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2020 11 25    22 27 42.5 -40 52 59   0.07328 0.9783    81.0    94.8    24.3
...
2020 12 10    21 54 56.8 -45 49 40   0.02904 0.9712    61.3   117.2    23.5
...
2020 12 18    16 51 11.2 -48 00 33   0.0080540.9768    26.7   153.0    25.1
...
2020 12 24    12 15 43.7 +18 49 43   0.01661 0.9855    96.2    82.9    20.6
2020 12 25    12 04 59.8 +21 55 45   0.01941 0.9872   100.6    78.3    20.7
2020 12 26    11 56 40.0 +24 12 44   0.02227 0.9891   104.2    74.6    20.9
...
2021 01 01    11 29 33.9 +30 44 27   0.03995 1.0022   117.2    60.7    21.8
...
2021 01 09    11 12 03.9 +33 46 24   0.06383 1.0241   128.3    48.9    22.5
...
2021 01 24    10 45 51.9 +35 36 53   0.1108  1.0769   145.0    31.6    23.3

M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-Y125




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