[Iaude] MPEC Y136: 2020 YK4 [a=1.09,e=0.05,i=29.2,H=25.0]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Sat Dec 26 18:08:29 EST 2020


M.P.E.C. 2020-Y136                            Issued 2020 December 26, 23:07 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 YK4                                    


Observations:
     K20Y04K  C2020 12 22.33134 07 46 21.76 -08 09 02.7                VEY136G96
     K20Y04K  C2020 12 22.33653 07 46 20.87 -08 07 12.8                VEY136G96
     K20Y04K* C2020 12 26.22207407 35 37.12 +21 26 21.7          19.20GVEY136G96
     K20Y04K  C2020 12 26.23229207 35 34.39 +21 31 50.8          19.89GVEY136G96
     K20Y04K  C2020 12 26.23739807 35 33.06 +21 34 35.1          19.36GVEY136G96
     K20Y04K KC2020 12 26.27853 07 35 19.27 +21 56 30.9          19.7 RqEY136H36
     K20Y04K KC2020 12 26.28382 07 35 17.81 +21 59 19.9          19.6 RqEY136H36
     K20Y04K KC2020 12 26.28910 07 35 16.37 +22 02 09.3          19.2 RqEY136H36
     K20Y04K KC2020 12 26.29437 07 35 14.86 +22 04 58.7          19.3 RqEY136H36
     K20Y04K KC2020 12 26.29812207 35 16.34 +22 07 11.4          19.38GVEY136I52
     K20Y04K KC2020 12 26.29985607 35 15.85 +22 08 07.3          18.94GVEY136I52
     K20Y04K KC2020 12 26.30158707 35 15.37 +22 09 02.9          19.39GVEY136I52
     K20Y04K KC2020 12 26.43422807 34 37.13 +23 20 01.6          19.26GVEY136I52
     K20Y04K KC2020 12 26.43595907 34 36.63 +23 20 57.0          19.60GVEY136I52
     K20Y04K KC2020 12 26.43769107 34 36.16 +23 21 52.4          19.40GVEY136I52
     K20Y04K KC2020 12 26.43942607 34 35.66 +23 22 47.9          18.98GVEY136I52
     K20Y04K bC2020 12 26.84138407 33 11.18 +26 57 56.3          19.5 GVEY136L01
     K20Y04K bC2020 12 26.84388207 33 10.48 +26 59 17.2          19.2 GVEY136L01
     K20Y04K bC2020 12 26.84642607 33 09.75 +27 00 39.3          19.3 GVEY136L01

Observer details:
G96 Mt. Lemmon Survey.  Observers D. Rankin, T. A. Pruyne.  Measurers E. J.
    Christensen, B. Gray, D. Rankin, F. C. Shelly, 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, R. L. Seaman, K. W. Wierzchos.  1.5-m reflector
    + 10K CCD.
H36 Sandlot Observatory, Scranton.  Observer G. Hug.  0.56-m reflector + CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observer K. W. Wierzchos.
    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.
L01 Visnjan Observatory, Tican.  Observer K. Korlevic.  1.0-m f/2.9 reflector
    + CCD.

Orbital elements:
2020 YK4                                                 Earth MOID = 0.0535 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres
M 358.70975              (2000.0)            P               Q
n   0.86499574     Peri.  352.57936     +0.01613745     -0.87445608
a   1.0909213      Node    95.56277     +0.94057061     -0.15123003
e   0.0498540      Incl.   29.15214     +0.33921455     +0.46092954
P   1.14           H   25.0           G   0.15           U   7
Residuals in seconds of arc
201222 G96  0.3+  0.3+    201226 H36  0.1+  0.7+    201226 I52  0.2+  0.3-
201222 G96  0.1-  0.3-    201226 H36  0.3-  0.8+    201226 I52  0.2+  0.3-
201226 G96  0.3+  0.3-    201226 I52  0.0   0.5-    201226 L01  0.5+  0.6+
201226 G96  0.2-  0.6-    201226 I52  0.0   0.4-    201226 L01  0.3+  0.2+
201226 G96  0.2+  0.8-    201226 I52  0.1+  0.6-    201226 L01  0.1-  0.5-
201226 H36  0.8-  1.8+    201226 I52  0.1-  0.2-
201226 H36  0.5-  0.8+    201226 I52  0.1-  0.3-

Ephemeris:
2020 YK4                 a,e,i = 1.09, 0.05, 29                  q = 1.0365
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2020 11 26    07 55 48.5 -48 29 38   0.2667  1.0400    94.0    71.2    24.7
...
2020 12 11    07 57 21.0 -39 41 19   0.1491  1.0369   106.5    65.6    23.3
...
2020 12 19    07 51 42.6 -23 25 14   0.08865 1.0365   124.4    51.6    21.7
...
2020 12 25    07 39 37.9 +10 54 24   0.05799 1.0368   156.2    22.5    20.0
2020 12 26    07 36 18.8 +19 28 47   0.05619 1.0369   161.6    17.4    19.7
2020 12 27    07 32 24.1 +28 23 58   0.05575 1.0370   163.7    15.4    19.7
...
2021 01 02    06 43 37.2 +70 00 52   0.07802 1.0380   132.9    43.9    21.2
...
2021 01 10    00 48 00.8 +84 12 15   0.1362  1.0399   110.9    62.0    23.0
...
2021 01 25    21 31 00.5 +77 23 31   0.2545  1.0458    96.9    69.2    24.6

M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-Y136




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