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  • MPEC 2021-A09 : 2020 YG5

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    M.P.E.C. 2021-A09                               Issued 2021 January 3, 16:10 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 YG5                                 
    
    
    Observations:
         K20Y05G* S2020 12 28.83582 14 39 13.65 +51 00 38.2          18   RLEA009C51
         K20Y05G  s2020 12 28.83582 1 - 3316.9003 - 3310.0100 + 4993.1716   EA009C51
         K20Y05G  S2020 12 29.03192 14 40 31.83 +50 49 36.1                LEA009C51
         K20Y05G  s2020 12 29.03192 1 - 3288.4798 - 3311.0470 + 5011.2319   EA009C51
         K20Y05G  S2020 12 29.22815 14 41 49.79 +50 38 26.8                LEA009C51
         K20Y05G  s2020 12 29.22815 1 - 3313.6482 - 3343.6989 + 4972.9939   EA009C51
         K20Y05G  S2020 12 29.29347 14 42 15.71 +50 34 43.0                LEA009C51
         K20Y05G  s2020 12 29.29347 1 - 3284.3958 - 3331.9595 + 4999.6129   EA009C51
         K20Y05G  S2020 12 29.35892 14 42 41.59 +50 30 56.9                LEA009C51
         K20Y05G  s2020 12 29.35892 1 - 3310.5110 - 3353.4380 + 4968.0444   EA009C51
         K20Y05G  S2020 12 29.42425 14 43 07.43 +50 27 11.5                LEA009C51
         K20Y05G  s2020 12 29.42425 1 - 3283.2554 - 3343.1516 + 4992.9327   EA009C51
         K20Y05G  S2020 12 29.55502 14 43 59.05 +50 19 37.2                LEA009C51
         K20Y05G  s2020 12 29.55502 1 - 3282.1275 - 3354.3803 + 4986.1868   EA009C51
         K20Y05G  S2020 12 29.68580 14 44 50.57 +50 12 00.6                LEA009C51
         K20Y05G  s2020 12 29.68580 1 - 3280.9545 - 3365.6113 + 4979.4370   EA009C51
         K20Y05G  S2020 12 29.81658 14 45 41.97 +50 04 21.7                LEA009C51
         K20Y05G  s2020 12 29.81658 1 - 3279.7710 - 3376.8647 + 4972.6441   EA009C51
         K20Y05G ^C2020 12 31.52573 14 56 44.18 +48 19 47.8          20.7 GVEA009695
         K20Y05G ^C2020 12 31.53111 14 56 46.18 +48 19 27.7          20.7 GVEA009695
         K20Y05G ^C2020 12 31.53649 14 56 48.22 +48 19 07.3          20.7 GVEA009695
         K20Y05G ^C2021 01 02.46231 15 08 49.38 +46 11 04.0          20.9 GVEA009695
         K20Y05G ^C2021 01 02.46864 15 08 51.70 +46 10 38.0          20.8 GVEA009695
         K20Y05G ^C2021 01 02.47496 15 08 53.99 +46 10 12.1          20.8 GVEA009695
         K20Y05G KC2021 01 02.50859115 09 06.22 +46 07 53.7          21.05GVEA009I52
         K20Y05G KC2021 01 02.51027615 09 06.79 +46 07 46.8          20.63GVEA009I52
         K20Y05G KC2021 01 03.45774 15 14 52.25 +45 00 37.4          21.5 GVEA009291
         K20Y05G KC2021 01 03.46689 15 14 55.51 +44 59 58.0          21.2 GVEA009291
         K20Y05G KC2021 01 03.47607 15 14 58.80 +44 59 19.1          21.1 GVEA009291
         K20Y05G KC2021 01 03.53022415 15 17.99 +44 55 26.3          20.20GVEA009I52
         K20Y05G KC2021 01 03.53232615 15 18.73 +44 55 18.7          20.50GVEA009I52
         K20Y05G KC2021 01 03.53442815 15 19.66 +44 55 09.8          19.73GVEA009I52
    
    Observer details:
    291 LPL/Spacewatch II.  Observer T. H. Bressi.  1.8-m f/2.7 reflector + CCD.
    695 Kitt Peak.  Observers A. F. Tubbiolo, R. A. Mastaler.  2.3-m f/9 reflector
        + CCD.
    C51 WISE.  Observer Near-Earth Object Wide-field Infrared Survey Explorer.
        Measurers A. K. Mainzer, J. M. Bauer, T. Grav, J. R. Masiero, R. M. Cutri,
        J. W. Dailey, E. Kramer, J. Pittichova, E. L. Wright.
    I52 Steward Observatory, Mt. Lemmon Station.  Observer H. Groeller.  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.
    
    Orbital elements:
    2020 YG5                                                 Earth MOID = 0.2547 AU
    Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres
    M 343.01165              (2000.0)            P               Q
    n   0.26129708     Peri.  194.00246     -0.98046681     +0.19532509
    a   2.4231466      Node   356.96148     -0.11045147     -0.64390975
    e   0.7040335      Incl.   25.81806     -0.16274306     -0.73974884
    P   3.77           H   20.1           G   0.15           U   9
    Residuals in seconds of arc
    201228 C51  0.1-  0.2-    201229 C51  0.1-  0.4+    210102 I52  0.1-  0.3-
    201229 C51  0.0   0.2+    201231 695  0.1+  0.1-    210103 291  0.1+  0.0
    201229 C51  0.0   0.0     201231 695  0.0   0.1+    210103 291  0.1-  0.4-
    201229 C51  0.3+  0.5+    201231 695  0.2+  0.0     210103 291  0.0   0.1-
    201229 C51  0.0   0.3-    210102 695  0.2-  0.3+    210103 I52  0.6-  0.9-
    201229 C51  0.0   0.0     210102 695  0.1-  0.2+    210103 I52  0.6-  0.6+
    201229 C51  0.1-  0.4-    210102 695  0.2-  0.2+    210103 I52  1.3+  0.7+
    201229 C51  0.1-  0.3-    210102 I52  0.3+  0.3-
    
    Ephemeris:
    2020 YG5                 a,e,i = 2.42, 0.70, 26                  q = 0.7172
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2020 12 04    11 32 58.2 +62 15 15   0.7581  1.3800   103.9    43.9    21.9
    ...
    2020 12 19    13 28 44.9 +58 05 49   0.5980  1.2164    97.5    53.3    21.4
    ...
    2020 12 27    14 26 49.1 +52 38 54   0.5265  1.1290    91.7    60.5    21.1
    ...
    2021 01 02    15 05 56.9 +46 42 53   0.4805  1.0642    86.0    67.2    21.0
    2021 01 03    15 12 04.5 +45 33 29   0.4736  1.0535    85.0    68.4    21.0
    2021 01 04    15 18 05.4 +44 21 08   0.4670  1.0428    83.9    69.6    21.0
    ...
    2021 01 10    15 52 01.1 +36 03 50   0.4327  0.9801    76.8    77.7    21.0
    ...
    2021 01 18    16 32 32.3 +22 21 48   0.4059  0.9010    66.3    89.3    21.1
    ...
    2021 02 02    17 42 10.6 -06 27 49   0.4387  0.7789    49.9   104.6    21.6
    
    M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-A09
    


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