[Iaude] MPEC Y135: 2020 YJ4 [a=1.30,e=0.23,i=18.7,H=24.0]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Sat Dec 26 18:07:05 EST 2020


M.P.E.C. 2020-Y135                            Issued 2020 December 26, 23:05 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 YJ4                                    


Observations:
     K20Y04J  C2020 12 24.34018206 34 50.306+62 32 52.45         19.70GVEY135F51
     K20Y04J  C2020 12 24.35476306 34 45.393+62 27 55.45         19.43GVEY135F51
     K20Y04J* C2020 12 26.21811806 29 07.85 +51 02 03.9          19.24GVEY135703
     K20Y04J  C2020 12 26.22361106 29 06.54 +51 00 00.6          18.93GVEY135703
     K20Y04J  C2020 12 26.22909706 29 05.40 +50 57 55.6          18.40GVEY135703
     K20Y04J KC2020 12 26.25051406 29 00.70 +50 49 47.9          18.90GVEY135I52
     K20Y04J KC2020 12 26.25175006 29 00.44 +50 49 19.6          18.73GVEY135I52
     K20Y04J KC2020 12 26.25298306 29 00.19 +50 48 51.6          18.73GVEY135I52
     K20Y04J KC2020 12 26.25421806 28 59.91 +50 48 23.3          18.81GVEY135I52
     K20Y04J KC2020 12 26.39896106 28 28.19 +49 52 34.6          18.41GVEY135I52
     K20Y04J KC2020 12 26.39994906 28 27.99 +49 52 11.5          18.43GVEY135I52
     K20Y04J KC2020 12 26.40094206 28 27.78 +49 51 48.1          18.53GVEY135I52
     K20Y04J KC2020 12 26.40193106 28 27.57 +49 51 25.0          18.60GVEY135I52
     K20Y04J bC2020 12 26.70888306 28 06.82 +47 50 54.7          18.6 GVEY135L01
     K20Y04J pC2020 12 26.71007306 28 06.72 +47 50 27.4          18.4 GVEY135L01
     K20Y04J bC2020 12 26.71099606 28 06.63 +47 50 06.3          18.4 GVEY135L01
     K20Y04J bC2020 12 26.71347006 28 06.26 +47 49 10.7          18.6 GVEY135L01
     K20Y04J bC2020 12 26.71906106 28 05.55 +47 47 03.3          18.6 GVEY135L01
     K20Y04J KC2020 12 26.73572 06 28 02.31 +47 40 34.0          17.6 RVEY135113
     K20Y04J KC2020 12 26.73802 06 28 02.02 +47 39 42.9          18.7 RVEY135113
     K20Y04J KC2020 12 26.80694406 27 54.82 +47 13 32.9          18.3 GVEY135B49
     K20Y04J KC2020 12 26.80761606 27 54.71 +47 13 17.4          18.3 GVEY135B49
     K20Y04J KC2020 12 26.82514 06 27 50.10 +47 06 40.3          18.9 GVEY135595
     K20Y04J KC2020 12 26.83506 06 27 48.99 +47 02 48.2                VEY135204
     K20Y04J pC2020 12 26.83974 06 27 47.68 +47 01 06.1          18.8 GVEY135595
     K20Y04J KC2020 12 26.84205 06 27 47.86 +47 00 08.1                VEY135204
     K20Y04J pC2020 12 26.84808 06 27 46.20 +46 57 54.7          18.8 GVEY135595
     K20Y04J KC2020 12 26.84903 06 27 46.72 +46 57 27.9          18.7 GVEY135204
     K20Y04J KC2020 12 26.86109 06 27 45.11 +46 52 53.0          18.4 GVEY135C77
     K20Y04J KC2020 12 26.86509 06 27 44.37 +46 51 21.2          17.9 GVEY135C77
     K20Y04J KC2020 12 26.86912 06 27 43.67 +46 49 49.0          18.6 GVEY135C77
     K20Y04J KC2020 12 26.87092 06 27 42.25 +46 49 08.9          18.5 GVEY135595
     K20Y04J KC2020 12 26.88266006 27 41.01 +46 44 34.1          18.6 GVEY135K38
     K20Y04J KC2020 12 26.89912506 27 38.05 +46 38 14.6          18.4 GVEY135K38
     K20Y04J KC2020 12 26.90552306 27 36.90 +46 35 46.5          18.6 GVEY135K38
     K20Y04J KC2020 12 26.91357406 27 35.47 +46 32 40.4          18.3 GVEY135K38

Observer details:
113 Volkssternwarte Drebach, Schoenbrunn.  Observer G. Lehmann.  0.5-m f/4.6
    reflector + CCD.
204 Schiaparelli Observatory.  Observer L. Buzzi.  0.84-m f/3.5 reflector +
    CCD.
595 Farra d'Isonzo.  Observer E. Pettarin.  0.40-m f/5.15 reflector + CCD.
703 Catalina Sky Survey.  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.  0.68-m Schmidt + 10K
    CCD.
B49 Paus Observatory, Sabadell.  Observer J. Camarasa.  0.30-m f/4 reflector +
    CCD.
C77 Bernezzo Observatory.  Observer A. Mantero.  0.25-m f/4.0 reflector + CCD.
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, K. Chambers, T. Lowe, A.
    Schultz, M. Willman.  Measurers S. Chastel, M. Huber, Y. Ramanjooloo, R.
    Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + 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.
K38 M57 Observatory, Saltrio.  Observer G. Baj.  0.3-m f/5.5 Ritchey-Chretien
    + CCD.
L01 Visnjan Observatory, Tican.  Observer K. Korlevic.  1.0-m f/2.9 reflector
    + CCD.

Orbital elements:
2020 YJ4                                                 Earth MOID = 0.0554 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres
M  15.41905              (2000.0)            P               Q
n   0.66360165     Peri.  140.71584     +0.47307668     -0.82213522
a   1.3017605      Node   278.88086     +0.70585318     +0.56879421
e   0.2332136      Incl.   18.69510     +0.52722836     -0.02380791
P   1.49           H   24.0           G   0.15           U   7
Residuals in seconds of arc
201224 F51  0.1-  0.1-    201226 I52  0.0   0.2-    201226 595  0.3+  0.2+
201224 F51  0.0   0.1+    201226 L01  0.2-  0.1-    201226 204  0.2-  0.0
201226 703  1.1+  0.0     201226 L01  0.2+  0.3-    201226 595  0.4-  0.3+
201226 703  0.2-  1.1+    201226 L01  0.5+  0.4-    201226 204  0.1-  0.0
201226 703  0.2+  0.5+    201226 L01  0.2-  0.3+    201226 C77  0.4+  0.2-
201226 I52  0.3-  0.1-    201226 L01  0.4-  0.1+    201226 C77  0.3-  0.1-
201226 I52  0.2-  0.3-    201226 113  0.7-  1.4-    201226 C77  0.3-  0.4+
201226 I52  0.0   0.2-    201226 113  0.6-  0.0     201226 595  0.5-  0.2+
201226 I52  0.0   0.3-    201226 B49  0.9+  1.6+    201226 K38  0.5+  0.5-
201226 I52  0.1+  0.3-    201226 B49  0.8+  1.4+    201226 K38  0.1-  0.1-
201226 I52  0.2+  0.2-    201226 595  0.3+  0.6-    201226 K38  0.3-  0.3-
201226 I52  0.1+  0.3-    201226 204  0.3-  0.1-    201226 K38  0.1-  0.2-

Ephemeris:
2020 YJ4                 a,e,i = 1.30, 0.23, 19                  q = 0.9982
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2020 11 26    18 07 02.4 +63 47 01   0.1921  0.9983    87.9    81.1    23.2
...
2020 12 11    17 49 06.7 +75 30 02   0.1146  1.0083    98.7    74.9    21.9
...
2020 12 19    08 31 22.5 +86 17 23   0.07584 1.0197   116.2    60.0    20.6
...
2020 12 25    06 32 18.1 +58 37 33   0.05717 1.0306   144.6    33.5    19.3
2020 12 26    06 29 30.8 +52 25 09   0.05593 1.0327   150.9    27.6    19.0
2020 12 27    06 27 21.3 +45 59 26   0.05540 1.0347   157.3    21.5    18.8
...
2021 01 02    06 20 41.2 +11 22 55   0.06674 1.0483   166.5    12.7    19.0
...
2021 01 10    06 18 08.9 -11 43 03   0.1053  1.0689   142.5    34.1    20.7
...
2021 01 25    06 21 22.5 -24 02 43   0.1972  1.1139   126.8    45.0    22.4

M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-Y135




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