[Iaude] MPEC J239: 2021 JN7 [a=1.34,e=0.24,i=12.4,H=24.9]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Sat May 15 16:23:29 EDT 2021


M.P.E.C. 2021-J239                                 Issued 2021 May 15, 20:22 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 JN7                                    


Observations:
     K21J07N* C2021 05 13.38633317 58 19.40 +48 47 21.3          21.10GVEJ239G96
     K21J07N  C2021 05 13.39156317 58 19.96 +48 46 43.4          21.62GVEJ239G96
     K21J07N  C2021 05 13.39680217 58 20.39 +48 46 05.4          21.59GVEJ239G96
     K21J07N KC2021 05 13.43979917 58 23.98 +48 40 51.5          21.58GVEJ239I52
     K21J07N KC2021 05 13.44316017 58 24.27 +48 40 26.8          22.09GVEJ239I52
     K21J07N KC2021 05 13.44652217 58 24.58 +48 40 02.4          21.64GVEJ239I52
     K21J07N KC2021 05 14.32563418 00 37.89 +46 48 05.0          21.4 VuEJ239H21
     K21J07N KC2021 05 14.33289718 00 38.49 +46 47 07.8          21.1 VuEJ239H21
     K21J07N  C2021 05 14.40444 18 00 48.54 +46 37 52.8                VEJ239I52
     K21J07N  C2021 05 14.41031 18 00 49.09 +46 37 06.2          21.3 GVEJ239I52
     K21J07N 1C2021 05 14.91571 18 02 08.86 +45 27 02.1          21.0 VVEJ239033
     K21J07N 1C2021 05 14.91767 18 02 09.08 +45 26 46.3          21.3 VVEJ239033
     K21J07N 1C2021 05 14.91964 18 02 09.31 +45 26 30.4          20.9 VVEJ239033
     K21J07N 1C2021 05 14.92160 18 02 09.53 +45 26 14.5          21.3 VVEJ239033
     K21J07N KC2021 05 15.04053 18 02 22.65 +45 10 05.0                VEJ239204
     K21J07N HC2021 05 15.07067 18 02 25.39 +45 05 50.8          21.5 GVEJ239204
     K21J07N KC2021 05 15.40393318 03 13.55 +44 18 24.8          21.79GVEJ239I52
     K21J07N KC2021 05 15.40729718 03 13.80 +44 17 55.0          21.45GVEJ239I52
     K21J07N KC2021 05 15.41066118 03 14.07 +44 17 25.8          21.14GVEJ239I52
     K21J07N KC2021 05 15.41402418 03 14.26 +44 16 56.1          21.47GVEJ239I52
     K21J07N  C2021 05 15.43493418 03 16.11 +44 13 53.0          21.23GVEJ239V00
     K21J07N  C2021 05 15.43982918 03 16.51 +44 13 09.6          22.01GVEJ239V00
     K21J07N  C2021 05 15.44474018 03 16.91 +44 12 25.8          21.34GVEJ239V00
     K21J07N  C2021 05 15.44964618 03 17.31 +44 11 42.0          21.83GVEJ239V00

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.
204 Schiaparelli Observatory.  Observer L. Buzzi.  0.84-m f/3.5 reflector +
    CCD.
G96 Mt. Lemmon 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.  1.5-m reflector +
    10K CCD.
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers T. Linder, R. Holmes, L. Horn.  0.76-m f/3.0 astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observers T. A. Pruyne, D. C.
    Fuls.  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.  1.0-m reflector + CCD.
V00 Kitt Peak-Bok.  Observer H. Groeller.  Measurers M. J. Brucker, E. J.
    Christensen, C. E. Woodward, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D.
    Grauer, H. Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, R. S.
    McMillan, T. A. Pruyne, D. Rankin, R. L. Seaman, F. C. Shelly, K. W.
    Wierzchos.  2.25-m reflector + CCD.

Orbital elements:
2021 JN7                                                 Earth MOID = 0.0409 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres                   
M 276.95585              (2000.0)            P               Q                  
n   0.63569292     Peri.  143.76781     -0.80391044     +0.55894476             
a   1.3395876      Node    71.45268     -0.58354777     -0.67526776             
e   0.2372161      Incl.   12.37917     -0.11489124     -0.48124236             
P   1.55           H   24.93          G   0.15           U   8                  
Residuals in seconds of arc
210513 G96  0.5-  0.1-    210514 I52  0.4-  0.1-    210515 I52  0.4+  0.4+
210513 G96  0.6+  0.4-    210514 I52  0.3+  0.1+    210515 I52  0.2+  0.0
210513 G96  0.4+  0.4-    210514 033  0.2+  0.0     210515 I52  0.2+  0.3+
210513 I52  0.1-  0.0     210514 033  0.1+  0.1+    210515 I52  0.6-  0.1+
210513 I52  0.1-  0.3+    210514 033  0.1+  0.1+    210515 V00  0.1-  0.1+
210513 I52  0.1+  0.7+    210514 033  0.0   0.1+    210515 V00  0.1+  0.0
210514 H21  0.1+  0.0     210515 204  0.2-  0.1-    210515 V00  0.1+  0.1-
210514 H21  0.3-  0.0     210515 204  0.6-  0.4-    210515 V00  0.2+  0.3-

Ephemeris:
2021 JN7                 a,e,i = 1.34, 0.24, 12                  q = 1.0218
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 04 15    16 35 20.3 +71 42 35   0.1669  1.0263    93.2    77.4    23.8
...
2021 04 30    17 21 42.9 +65 00 32   0.1185  1.0222    93.9    79.5    23.1
...
2021 05 08    17 44 19.8 +57 26 40   0.09128 1.0261    98.1    76.9    22.5
...
2021 05 14    17 59 48.5 +47 30 20   0.07188 1.0318   105.2    71.0    21.8
2021 05 15    18 02 14.6 +45 15 58   0.06888 1.0330   106.9    69.5    21.6
2021 05 16    18 04 38.1 +42 48 37   0.06600 1.0342   108.8    67.8    21.5
...
2021 05 22    18 17 58.7 +22 30 28   0.05216 1.0429   124.7    52.9    20.6
...
2021 05 30    18 32 28.9 -16 04 31   0.05043 1.0576   149.9    28.7    19.8
...
2021 06 14    18 44 32.2 -56 28 41   0.09474 1.0938   144.0    33.1    21.4

M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-J239




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