[Iaude] MPEC J236: 2021 JK7 [a=1.59,e=0.56,i=31.8,H=24.3]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Sat May 15 16:17:39 EDT 2021


M.P.E.C. 2021-J236                                 Issued 2021 May 15, 20:16 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

                                    2021 JK7                                    


Observations:
     K21J07K  C2021 05 10.56736616 21 34.986+07 32 43.70         22.01GVEJ236F51
     K21J07K  C2021 05 10.57836516 21 32.463+07 32 07.90         21.69GVEJ236F51
     K21J07K  C2021 05 10.58938316 21 29.946+07 31 32.09         21.55GVEJ236F51
     K21J07K  C2021 05 10.60038116 21 27.468+07 30 56.61         21.74GVEJ236F51
     K21J07K* C2021 05 13.48811316 08 21.831+04 06 40.95         21.24wUEJ236F51
     K21J07K  C2021 05 13.50034116 08 17.210+04 05 33.02         21.03wUEJ236F51
     K21J07K  C2021 05 13.51252316 08 12.653+04 04 26.06         21.02GVEJ236F51
     K21J07K  C2021 05 14.46703416 02 05.831+02 27 11.08         20.89GVEJ236F51
     K21J07K  C2021 05 14.47870516 02 00.547+02 25 52.16         20.56GVEJ236F51
     K21J07K  C2021 05 14.50191316 01 49.992+02 23 15.01         20.50GVEJ236F51
     K21J07K ^C2021 05 14.59487716 01 07.654+02 12 37.78         20.72GVEJ236568
     K21J07K ^C2021 05 14.59689716 01 06.736+02 12 23.75         20.72GVEJ236568
     K21J07K 1C2021 05 14.91010 15 58 51.39 +01 34 25.2          20.0 VVEJ236033
     K21J07K 1C2021 05 14.91120 15 58 50.86 +01 34 16.8          20.3 VVEJ236033
     K21J07K 1C2021 05 14.91229 15 58 50.34 +01 34 08.8          20.4 VVEJ236033
     K21J07K 1C2021 05 14.91338 15 58 49.83 +01 34 00.5          20.4 VVEJ236033
     K21J07K 2C2021 05 14.96726915 58 25.807+01 27 42.26         21.5 GVEJ236J04
     K21J07K 2C2021 05 14.97120915 58 23.895+01 27 12.38         20.7 GVEJ236J04
     K21J07K 2C2021 05 14.97511815 58 21.974+01 26 43.54         21.1 GVEJ236J04
     K21J07K KC2021 05 15.17150615 56 47.47 +01 01 21.4          20.7 VuEJ236H21
     K21J07K KC2021 05 15.17731615 56 44.53 +01 00 36.2          20.7 VuEJ236H21

Observer details:
033 Karl Schwarzschild Observatory, Tautenburg.  Observers S. Melnikov, C.
    Hoegner, U. Laux, F. Ludwig, B. Stecklum.  Measurer B. Stecklum.  1.34-m
    f/3 Schmidt + CCD.
568 Mauna Kea.  Observers R. Wainscoat, C. Crowder, T. Burdullis.  Measurers
    R. Weryk, R. Wainscoat.  3.6-m Canada-France-Hawaii Telescope + CCD.
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, K. Chambers, T. Lowe, A.
    Schultz, I. Smith, M. Willman.  Measurers S. Chastel, M. Huber, Y.
    Ramanjooloo, R. Wainscoat, R. Weryk, K. Chambers, T. de Boer, L. Denneau,
    J. Fairlamb, H. Flewelling, C.-C. Lin, E. Magnier.  1.8-m Ritchey-Chretien
    + CCD.
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers T. Linder, R. Holmes, L. Horn.  0.76-m f/3.0 astrograph + CCD.
J04 ESA Optical Ground Station, Tenerife.  Observer D. Abreu.  Measurers M.
    Micheli, D. Fohring, R. Kresken, D. Koschny, L. Conversi, A. Knofel,
    M. Busch, E. Schwab.  1.0-m f/4.4 reflector + CCD.

Orbital elements:
2021 JK7                                                 Earth MOID = 0.0412 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres                   
M 255.72157              (2000.0)            P               Q                  
n   0.49321233     Peri.  267.80533     +0.69838400     +0.56044263             
a   1.5865244      Node    57.77218     -0.23630447     +0.76764344             
e   0.5560064      Incl.   31.75108     -0.67558862     +0.31084980             
P   2.00           H   24.33          G   0.15           U   8                  
Residuals in seconds of arc
210510 F51  0.1+  0.0     210514 F51  0.1-  0.1+    210514 033  0.1+  0.0
210510 F51  0.1-  0.1-    210514 F51  0.0   0.1-    210514 033  0.4+  0.2-
210510 F51  0.2-  0.1-    210514 F51  0.3-  0.0     210514 J04  0.6-  0.1-
210510 F51  0.1+  0.3+    210514 568  0.0   0.0     210514 J04  0.2-  0.5-
210513 F51  0.0   0.1-    210514 568  0.0   0.0     210514 J04  0.0   0.1+
210513 F51 (0.3-  0.5-)   210514 033  0.0   0.2+    210515 H21  0.5+  0.0
210513 F51  0.1+  0.0     210514 033  0.1+  0.1-    210515 H21  1.1+  0.4+

Ephemeris:
2021 JK7                 a,e,i = 1.59, 0.56, 32                  q = 0.7044
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 04 15    16 41 59.7 +13 03 13   0.5170  1.3817   127.8    35.0    25.0
...
2021 04 30    16 40 14.0 +12 10 39   0.3062  1.2511   137.8    32.7    23.6
...
2021 05 08    16 29 01.9 +09 25 09   0.1995  1.1792   145.5    29.0    22.5
...
2021 05 14    16 05 15.0 +03 17 35   0.1236  1.1246   155.8    21.6    21.1
2021 05 15    15 58 08.2 +01 24 18   0.1117  1.1154   158.4    19.5    20.8
2021 05 16    15 49 20.0 -00 56 48   0.1000  1.1063   161.4    17.0    20.5
...
2021 05 22    13 12 22.6 -34 53 51   0.04958 1.0515   141.5    36.8    19.4
...
2021 05 30    06 50 39.4 -37 23 23   0.1054  0.9792    68.1   106.2    23.3
...
2021 06 14    05 39 59.9 -25 07 14   0.2886  0.8520    48.4   116.9    25.9

M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-J236




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