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  • MPEC 2020-Y138 : 2020 YM4

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    M.P.E.C. 2020-Y138                            Issued 2020 December 27, 02:28 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@CFA.HARVARD.EDU
                URL https://www.minorplanetcenter.net/    ISSN 1523-6714
    
                                    2020 YM4                                 
    
    
    Observations:
         K20Y04M  C2020 12 23.53105 14 22 14.26 +46 44 07.4          19.0 GVEY138703
         K20Y04M* C2020 12 26.38679111 10 49.76 +24 18 44.8          19.07GVEY138G96
         K20Y04M  C2020 12 26.39705811 10 31.69 +24 15 23.0          18.72GVEY138G96
         K20Y04M KC2020 12 26.41662911 09 45.34 +24 08 24.8          18.4 VuEY138H21
         K20Y04M KC2020 12 26.41697411 09 56.75 +24 08 52.8          18.56GVEY138I52
         K20Y04M KC2020 12 26.41771511 09 55.44 +24 08 38.1          19.02GVEY138I52
         K20Y04M KC2020 12 26.41845511 09 54.14 +24 08 23.6          18.61GVEY138I52
         K20Y04M KC2020 12 26.41867111 09 41.72 +24 07 43.7          18.8 VuEY138H21
         K20Y04M KC2020 12 26.41919411 09 52.84 +24 08 09.2          18.99GVEY138I52
         K20Y04M KC2020 12 26.42071311 09 38.12 +24 07 02.7          19.2 VuEY138H21
         K20Y04M KC2020 12 26.42239 11 09 38.97 +24 06 30.0          19.1 RqEY138H36
         K20Y04M KC2020 12 26.42791 11 09 29.31 +24 04 40.7          19.0 RqEY138H36
         K20Y04M KC2020 12 26.43458 11 09 17.59 +24 02 26.8          19.4 RqEY138H36
         K20Y04M KC2020 12 26.50987811 07 15.19 +23 38 30.6          19.07GVEY138I52
         K20Y04M KC2020 12 26.51061911 07 13.91 +23 38 16.1          18.45GVEY138I52
         K20Y04M KC2020 12 26.51135911 07 12.64 +23 38 01.6          19.00GVEY138I52
         K20Y04M KC2020 12 26.51210011 07 11.37 +23 37 47.2          18.97GVEY138I52
         K20Y04M bC2020 12 26.95207810 57 32.08 +21 21 38.9          19.8 GVEY138L01
         K20Y04M bC2020 12 26.95377910 57 29.92 +21 21 11.7          19.7 GVEY138L01
         K20Y04M bC2020 12 26.95811210 57 24.25 +21 20 02.3          19.5 GVEY138L01
         K20Y04M bC2020 12 26.95956910 57 22.40 +21 19 38.7          19.6 GVEY138L01
         K20Y04M bC2020 12 26.96232910 57 18.85 +21 18 54.7          19.8 GVEY138L01
         K20Y04M KC2020 12 26.98369 10 56 51.01 +21 13 09.1          19.6 GVEY138595
         K20Y04M IC2020 12 27.00433 10 56 24.21 +21 07 40.0          19.5 GVEY138595
         K20Y04M KC2020 12 27.04205110 55 36.49 +20 57 38.6          19.4 GVEY138203
         K20Y04M KC2020 12 27.05865010 55 14.90 +20 53 16.8          19.2 GVEY138203
         K20Y04M KC2020 12 27.07294210 54 56.31 +20 49 32.4          19.0 GVEY138203
    
    Observer details:
    203 GiaGa Observatory.  Observers S. Foglia, G. Galli.  Measurer G. Galli.
        0.36-m f/5.76 Schmidt-Cassegrain + CCD.
    595 Farra d'Isonzo.  Observer E. Pettarin.  0.40-m f/5.15 reflector + CCD.
    703 Catalina Sky Survey.  Observer H. Groeller.  Measurers D. Rankin, B. Gray,
        F. C. Shelly.  1.5-m reflector + 10K CCD.
    G96 Mt. Lemmon Survey.  Observer 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.
    H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
        Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes.  0.76-m f/3.0
        astrograph + 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 YM4                                                 Earth MOID = 0.0076 AU
    Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres
    M   4.34886              (2000.0)            P               Q
    n   0.40632070     Peri.  149.60506     +0.33005997     -0.94236424
    a   1.8053306      Node   281.07538     +0.85442603     +0.32295574
    e   0.4675736      Incl.    3.20480     +0.40126870     +0.08745990
    P   2.43           H   25.9           G   0.15           U   6
    Residuals in seconds of arc
    201223 703  0.0   0.1-    201226 H21  0.2+  0.3+    201226 L01  0.5+  0.1+
    201226 G96  0.2-  0.1-    201226 H36  0.6-  0.1-    201226 L01  0.6-  0.2+
    201226 G96  0.6-  0.4-    201226 H36  0.0   0.4+    201226 L01  0.2-  0.1-
    201226 H21  0.4+  0.5+    201226 H36  0.2-  0.7-    201226 L01  0.0   0.1+
    201226 I52  0.1+  0.2+    201226 I52  0.2+  0.0     201226 595  0.0   0.1+
    201226 I52  0.0   0.0     201226 I52  0.0   0.0     201227 595  0.2+  0.4-
    201226 I52  0.0   0.1+    201226 I52  0.1-  0.1+    201227 203  0.6+  0.3-
    201226 H21  0.2+  0.3+    201226 I52  0.1-  0.2+    201227 203  0.2+  0.5-
    201226 I52  0.0   0.1+    201226 L01  0.1+  0.0     201227 203  0.1-  0.1-
    
    Ephemeris:
    2020 YM4                 a,e,i = 1.81, 0.47, 3                   q = 0.9612
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2020 11 27    21 08 39.9 +03 57 52   0.1089  0.9677    76.8    96.9    24.5
    ...
    2020 12 12    20 55 28.7 +10 04 31   0.04798 0.9636    62.9   114.6    23.7
    ...
    2020 12 20    19 39 20.1 +28 20 35   0.01658 0.9751    57.8   121.4    21.9
    ...
    2020 12 26    11 21 54.4 +26 41 54   0.01591 0.9896   112.4    66.8    19.2
    2020 12 27    10 56 12.3 +21 13 00   0.01937 0.9925   117.5    61.5    19.5
    2020 12 28    10 39 35.2 +17 18 45   0.02308 0.9955   121.1    57.7    19.8
    ...
    2021 01 03    09 59 54.1 +07 25 05   0.04725 1.0160   132.9    45.1    21.0
    ...
    2021 01 11    09 42 20.2 +03 58 46   0.08108 1.0495   143.2    34.2    22.0
    ...
    2021 01 26    09 24 36.7 +03 11 57   0.1505  1.1271   160.0    17.4    23.0
    
    M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-Y138
    


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