[Iaude] MPEC Y144: 2020 YQ4 [a=1.43,e=0.23,i=21.9,H=20.8]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Sun Dec 27 10:15:35 EST 2020


M.P.E.C. 2020-Y144                            Issued 2020 December 27, 15:14 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 YQ4                                    


Observations:
     K20Y04Q* C2020 12 23.48648311 48 38.20 +18 21 42.9          21.08GVEY144G96
     K20Y04Q  C2020 12 23.49209711 48 39.15 +18 21 53.6          21.63GVEY144G96
     K20Y04Q  C2020 12 23.49978611 48 40.48 +18 22 08.6          21.51GVEY144G96
     K20Y04Q KC2020 12 23.53369511 48 46.35 +18 23 14.1          21.95GVEY144V06
     K20Y04Q KC2020 12 23.53607211 48 46.76 +18 23 18.8          21.75GVEY144V06
     K20Y04Q KC2020 12 23.53845111 48 47.17 +18 23 23.5          21.95GVEY144V06
     K20Y04Q  C2020 12 24.51963 11 51 42.50 +18 55 12.4                VEY144G96
     K20Y04Q  C2020 12 24.52108 11 51 42.80 +18 55 14.3                VEY144G96
     K20Y04Q  C2020 12 24.52253 11 51 43.02 +18 55 17.2          21.5 GVEY144G96
     K20Y04Q mC2020 12 26.54984411 57 40.16 +20 01 54.9          20.95GVEY144G96
     K20Y04Q mC2020 12 26.55129311 57 40.44 +20 01 57.9          20.88GVEY144G96
     K20Y04Q mC2020 12 26.55418711 57 40.90 +20 02 03.3          20.88GVEY144G96
     K20Y04Q bC2020 12 27.09916611 59 16.39 +20 20 05.6          21.3 GVEY144L01
     K20Y04Q bC2020 12 27.10505011 59 17.43 +20 20 18.2          21.1 GVEY144L01
     K20Y04Q bC2020 12 27.10896611 59 18.12 +20 20 26.2          21.3 GVEY144L01

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, B. Gray.  1.5-m
    reflector + 10K CCD.
L01 Visnjan Observatory, Tican.  Observer K. Korlevic.  1.0-m f/2.9 reflector
    + 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 YQ4                                                 Earth MOID = 0.1478 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres
M  31.47307              (2000.0)            P               Q
n   0.57813904     Peri.  322.98356     +0.43009741     -0.82444603
a   1.4270785      Node    98.79711     +0.89150215     +0.32365991
e   0.2325672      Incl.   21.85241     +0.14226782     +0.46425532
P   1.70           H   20.8           G   0.15           U   9
Residuals in seconds of arc
201223 G96  0.2+  0.2+    201223 V06  0.1-  0.0     201226 G96  0.2+  0.0
201223 G96  0.1-  0.0     201224 G96  0.2-  0.6+    201226 G96  0.1-  0.4-
201223 G96  0.1-  0.1+    201224 G96  0.5+  0.3-    201227 L01  0.5-  0.4-
201223 V06  0.0   0.2-    201224 G96  0.1+  0.2-    201227 L01  0.1+  0.4+
201223 V06  0.0   0.1-    201226 G96  0.3-  0.1-    201227 L01  0.5+  0.5+

Ephemeris:
2020 YQ4                 a,e,i = 1.43, 0.23, 22                  q = 1.0952
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2020 11 27    10 23 34.9 +06 09 39   0.5552  1.1280    89.5    61.0    22.0
...
2020 12 12    11 12 54.6 +12 33 25   0.5222  1.1603    95.8    57.6    21.8
...
2020 12 20    11 38 03.8 +16 31 16   0.5084  1.1810    99.7    55.2    21.7
...
2020 12 26    11 56 03.8 +19 43 46   0.5005  1.1978   102.7    53.2    21.6
2020 12 27    11 58 58.5 +20 16 54   0.4994  1.2007   103.3    52.9    21.6
2020 12 28    12 01 51.6 +20 50 20   0.4983  1.2036   103.8    52.5    21.6
...
2021 01 03    12 18 31.2 +24 16 13   0.4934  1.2217   106.9    50.4    21.6
...
2021 01 11    12 38 38.5 +29 02 12   0.4908  1.2469   111.0    47.4    21.5
...
2021 01 26    13 07 27.4 +38 08 43   0.4988  1.2966   118.1    42.0    21.5

M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-Y144




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