[Iaude] MPEC Y146: 2020 YS4 [a=1.80,e=0.45,i=5.4,H=27.7]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Mon Dec 28 08:56:29 EST 2020


M.P.E.C. 2020-Y146                            Issued 2020 December 28, 13:55 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 YS4                                    


Observations:
     K20Y04S* C2020 12 27.14544000 10 49.62 +30 05 30.0          19.59GVEY146G96
     K20Y04S  C2020 12 27.15063100 10 51.54 +30 04 58.0          19.34GVEY146G96
     K20Y04S  C2020 12 27.15582900 10 53.50 +30 04 25.4          19.98GVEY146G96
     K20Y04S  C2020 12 27.16103400 10 55.48 +30 03 51.9          19.41GVEY146G96
     K20Y04S KC2020 12 27.23307700 11 31.76 +29 55 11.1          19.26GVEY146I52
     K20Y04S KC2020 12 27.23429400 11 32.51 +29 55 01.2          19.38GVEY146I52
     K20Y04S KC2020 12 27.23551100 11 33.29 +29 54 51.2          18.87GVEY146I52
     K20Y04S KC2020 12 27.23672900 11 34.06 +29 54 41.5          18.91GVEY146I52
     K20Y04S KC2020 12 27.68758 00 22 02.11 +29 05 05.0          18.3 GVEY146595
     K20Y04S KC2020 12 27.69083700 22 05.18 +29 04 55.7          18.7 GVEY146L01
     K20Y04S KC2020 12 27.69174 00 22 06.39 +29 04 29.0          18.4 GVEY146595
     K20Y04S KC2020 12 27.69298000 22 07.40 +29 04 36.9          18.9 GVEY146L01
     K20Y04S KC2020 12 27.69405600 22 08.47 +29 04 27.5          18.7 GVEY146L01
     K20Y04S KC2020 12 27.69539000 22 09.83 +29 04 15.2          18.6 GVEY146L01
     K20Y04S KC2020 12 27.69590 00 22 10.63 +29 03 51.9          18.3 GVEY146595
     K20Y04S KC2020 12 27.70006 00 22 14.95 +29 03 13.5          18.5 GVEY146595
     K20Y04S KC2020 12 27.70422 00 22 19.27 +29 02 35.0          18.4 GVEY146595
     K20Y04S KC2020 12 27.71425800 22 29.47 +29 01 17.9          18.6 GVEY146L01
     K20Y04S KC2020 12 27.71531300 22 30.59 +29 01 07.7          18.8 GVEY146L01
     K20Y04S KC2020 12 27.71849100 22 33.95 +29 00 36.5          18.8 GVEY146L01
     K20Y04S KC2020 12 27.72164600 22 37.30 +29 00 04.8          18.7 GVEY146L01
     K20Y04S bC2020 12 27.80332000 24 13.67 +28 43 57.8          18.5 GVEY146L01
     K20Y04S KC2020 12 27.80685300 24 47.20 +28 41 13.8          18.4 GVEY146J95
     K20Y04S bC2020 12 27.80753500 24 19.30 +28 42 59.5          18.6 GVEY146L01
     K20Y04S bC2020 12 27.80860800 24 20.75 +28 42 44.4          18.5 GVEY146L01
     K20Y04S KC2020 12 27.80904500 24 50.18 +28 40 45.7          18.6 GVEY146J95
     K20Y04S bC2020 12 27.80968000 24 22.20 +28 42 29.4          18.5 GVEY146L01
     K20Y04S KC2020 12 27.81980300 25 03.53 +28 38 17.0          18.5 GVEY146Z80
     K20Y04S KC2020 12 27.82588000 25 12.16 +28 36 54.5          19.1 GVEY146Z80
     K20Y04S KC2020 12 27.83236100 25 21.63 +28 35 24.1          18.7 GVEY146Z80
     K20Y04S KC2020 12 27.92524300 28 03.53 +28 09 20.2          18.4 GVEY146Z99
     K20Y04S KC2020 12 27.92790500 28 08.89 +28 08 31.0          18.3 GVEY146Z99
     K20Y04S KC2020 12 28.06090600 35 40.34 +27 50 53.3          17.60GVEY146I52
     K20Y04S KC2020 12 28.06166200 35 41.95 +27 50 39.0          17.83GVEY146I52
     K20Y04S KC2020 12 28.06241600 35 43.53 +27 50 24.8          17.62GVEY146I52
     K20Y04S KC2020 12 28.06316800 35 45.16 +27 50 10.2          17.57GVEY146I52

Observer details:
595 Farra d'Isonzo.  Observers G. Panterotto, E. Pettarin.  Measurer E.
    Pettarin.  0.40-m f/5.15 reflector + 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.
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.
J95 Great Shefford.  Observer P. Birtwhistle.  0.41-m f/6.3 Schmidt-Cassegrain
    + CCD.
L01 Visnjan Observatory, Tican.  Observer K. Korlevic.  1.0-m f/2.9 reflector
    + CCD.
Z80 Northolt Branch Observatory.  Observer G. Wells.  Measurers G. Wells, D.
    Bamberger.  0.25-m f/8.0 Ritchey-Chretien + CCD.
Z99 Clixby Observatory, Cleethorpes.  Observer A. Mickleburgh.  0.36-m f/8
    Schmidt-Cassegrain + CCD.

Orbital elements:
2020 YS4                                                 Earth MOID = 0.0005 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres                   
M 354.38443              (2000.0)            P               Q                  
n   0.40764280     Peri.  182.48336     -0.16648761     -0.98163374             
a   1.8014251      Node   277.11133     +0.90628751     -0.11511706             
e   0.4539854      Incl.    5.38645     +0.38849045     -0.15212909             
P   2.42           H   27.72          G   0.15           U   6                  
Residuals in seconds of arc
201227 G96  0.1-  0.1-    201227 L01  0.1+  0.3+    201227 L01  0.0-  0.2-
201227 G96  0.2+  0.1-    201227 L01  0.0-  0.1-    201227 J95  0.0-  0.1+
201227 G96  0.2+  0.1-    201227 595  0.1-  0.1+    201227 L01  0.0-  0.2-
201227 G96  0.4-  0.3-    201227 595  0.0+  0.4-    201227 Z80  0.2-  0.0-
201227 I52  0.1+  0.5+    201227 595  0.2-  0.3-    201227 Z80  0.3-  0.1+
201227 I52  0.1-  0.3+    201227 L01  0.4+  0.3-    201227 Z80  0.9+  0.2-
201227 I52  0.0+  0.0+    201227 L01  0.4+  0.2-    201227 Z99  0.3-  0.3+
201227 I52  0.0-  0.1+    201227 L01  0.4+  0.0-    201227 Z99  0.5-  0.1+
201227 595  0.5+  0.6-    201227 L01  0.2+  0.1-    201228 I52  0.1-  0.1-
201227 L01  0.1+  0.2-    201227 L01  0.1-  0.3+    201228 I52  0.1+  0.1-
201227 595  0.6+  0.0-    201227 J95  0.0+  0.0+    201228 I52  0.2-  0.1+
201227 L01  0.5+  0.0+    201227 L01  0.1-  0.0+    201228 I52  0.3+  0.2-

Ephemeris:
2020 YS4                 a,e,i = 1.80, 0.45, 5                   q = 0.9836
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2020 11 28    23 59 45.0 +32 41 24   0.1162  1.0537   122.6    52.1    25.1
...
2020 12 13    23 51 29.3 +32 05 04   0.06111 1.0051   108.1    68.6    24.1
...
2020 12 21    23 52 40.5 +31 41 32   0.03080 0.9902   101.2    77.0    22.8
...
2020 12 27    00 09 46.9 +30 17 01   0.0076450.9846    98.7    80.8    19.9
2020 12 28    00 32 38.4 +28 11 48   0.0037680.9841   101.7    78.1    18.3
2020 12 29    06 52 28.1 -28 51 13   0.0006960.9837   127.7    52.3    13.8
...
2021 01 04    12 21 42.9 -29 17 36   0.02362 0.9821    86.6    92.0    22.8
...
2021 01 12    12 25 57.9 -28 58 09   0.05405 0.9881    93.3    83.5    24.3
...
2021 01 27    12 24 20.6 -28 24 41   0.1081  1.0230   107.8    66.4    25.3

M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-Y146




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