[Iaude] MPEC J237: 2021 JL7 [a=0.93,e=0.45,i=28.9,H=22.5]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Sat May 15 16:19:00 EDT 2021


M.P.E.C. 2021-J237                                 Issued 2021 May 15, 20:17 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 JL7                                    


Observations:
     K21J07L* C2021 05 12.29968812 30 14.472-17 57 25.57         19.87wUEJ237F51
     K21J07L  C2021 05 12.31076612 30 10.047-17 55 18.76         20.32wUEJ237F51
     K21J07L  C2021 05 12.32181312 30 05.595-17 53 11.33         20.44wUEJ237F51
     K21J07L KC2021 05 12.42272812 29 27.43 -17 32 45.4          19.8 GVEJ237474
     K21J07L KC2021 05 12.42454612 29 26.71 -17 32 24.3          19.7 GVEJ237474
     K21J07L KC2021 05 12.43000812 29 24.57 -17 31 21.2          20.3 GVEJ237474
     K21J07L KC2021 05 12.43182712 29 23.87 -17 31 00.0          20.0 GVEJ237474
     K21J07L 4C2021 05 12.94285 12 26 12.63 -15 52 55.9          19.9 GVEJ237J04
     K21J07L 4C2021 05 12.94377 12 26 12.21 -15 52 44.8          19.7 GVEJ237J04
     K21J07L 4C2021 05 12.94471 12 26 11.89 -15 52 34.3          19.8 GVEJ237J04
     K21J07L KC2021 05 13.09573712 25 16.69 -15 23 06.9          20.2 VuEJ237H21
     K21J07L KC2021 05 13.09859512 25 15.60 -15 22 33.4          20.2 VuEJ237H21
     K21J07L KC2021 05 13.10202312 25 14.26 -15 21 53.0          20.0 VuEJ237H21
     K21J07L KC2021 05 13.11456 12 25 09.73 -15 19 25.2          20.2 GVEJ237H36
     K21J07L KC2021 05 13.12012 12 25 07.58 -15 18 19.2          20.3 GVEJ237H36
     K21J07L KC2021 05 13.12567 12 25 05.52 -15 17 13.7          20.0 GVEJ237H36
     K21J07L KC2021 05 13.15018112 24 56.50 -15 12 22.5          20.1 VqEJ237858
     K21J07L KC2021 05 13.15505212 24 54.60 -15 11 25.3          20.0 VqEJ237858
     K21J07L KC2021 05 13.15992512 24 52.68 -15 10 27.7          20.2 VqEJ237858
     K21J07L KC2021 05 13.18456 12 24 42.49 -15 05 38.9          19.9 RqEJ237734
     K21J07L KC2021 05 13.18735 12 24 41.46 -15 05 07.8          19.7 RqEJ237734
     K21J07L KC2021 05 13.19018 12 24 40.34 -15 04 31.2          19.6 RqEJ237734
     K21J07L KC2021 05 13.19298 12 24 39.25 -15 03 59.0          20.1 RqEJ237734
     K21J07L mC2021 05 13.24588112 24 19.30 -14 53 30.5          19.47GVEJ237I52
     K21J07L mC2021 05 13.24630112 24 19.13 -14 53 25.5          20.27GVEJ237I52
     K21J07L mC2021 05 13.24672012 24 18.95 -14 53 20.5          20.07GVEJ237I52
     K21J07L mC2021 05 13.24714012 24 18.82 -14 53 15.3          19.50GVEJ237I52
     K21J07L KC2021 05 13.30301512 24 01.20 -14 41 02.6          20.0 GVEJ237474
     K21J07L KC2021 05 13.30483112 24 00.52 -14 40 40.9          20.0 GVEJ237474
     K21J07L KC2021 05 13.30664612 23 59.80 -14 40 19.8          19.9 GVEJ237474
     K21J07L KC2021 05 13.90364612 20 21.34 -12 42 11.6          20.1 GXEJ237Y00
     K21J07L KC2021 05 13.90622112 20 20.37 -12 41 40.3          19.7 GXEJ237Y00
     K21J07L KC2021 05 13.90895312 20 19.30 -12 41 07.7          19.7 GXEJ237Y00
     K21J07L KC2021 05 13.93170112 20 08.06 -12 37 34.1          19.7 GVEJ237I93
     K21J07L KC2021 05 13.93851012 20 05.46 -12 36 12.3          20.8 GVEJ237I93
     K21J07L KC2021 05 14.08702412 19 13.22 -12 06 28.0          20.2 VuEJ237H21
     K21J07L KC2021 05 14.08983312 19 12.15 -12 05 54.1          20.3 VuEJ237H21
     K21J07L KC2021 05 14.09060712 19 11.88 -12 05 44.8          20.1 VuEJ237H21
     K21J07L KC2021 05 14.13781512 18 54.87 -11 56 14.7          20.3 VqEJ237858
     K21J07L KC2021 05 14.14187212 18 53.32 -11 55 25.9          20.1 VqEJ237858
     K21J07L KC2021 05 14.14593112 18 51.73 -11 54 36.6          20.0 VqEJ237858
     K21J07L 1C2021 05 14.90671 12 14 17.50 -09 21 34.4          20.9 VVEJ237033
     K21J07L 1C2021 05 14.90729 12 14 17.27 -09 21 27.4          20.5 VVEJ237033
     K21J07L 1C2021 05 14.90786 12 14 17.06 -09 21 20.4          20.5 VVEJ237033
     K21J07L 1C2021 05 14.90843 12 14 16.85 -09 21 13.7          20.5 VVEJ237033
     K21J07L 2C2021 05 14.90845812 14 18.067-09 20 58.32         20.0 GVEJ237J04
     K21J07L 2C2021 05 14.91088712 14 17.169-09 20 28.54         19.1 GVEJ237J04
     K21J07L KC2021 05 15.09472812 13 12.33 -08 43 25.9          20.4 VuEJ237H21
     K21J07L KC2021 05 15.09763012 13 11.24 -08 42 50.5          20.3 VuEJ237H21
     K21J07L KC2021 05 15.10081912 13 10.05 -08 42 12.0                uEJ237H21

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.
474 Mount John Observatory, Lake Tekapo.  Observers A. C. Gilmore, P. M.
    Kilmartin.  Measurer P. M. Kilmartin.  1.0-m f/7.7 reflector + CCD.
734 Farpoint Observatory, Eskridge.  Observers G. Hug, D. Cromer, D. Goodin,
    R. Valentine.  Measurer D. Cromer.  0.7-m reflector + CCD.
858 Tebbutt Observatory, Edgewood.  Observer F. B. Zoltowski.  0.51-m Schmidt-
    Cassegrain + CCD.
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, T. Lowe, A. Schultz, M.
    Willman.  Measurers K. Chambers, S. Chastel, T. de Boer, L. Denneau, J.
    Fairlamb, H. Flewelling, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo,
    R. Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers T. Linder, R. Holmes, L. Horn.  0.81-m f/4.0 astrograph + CCD,
    0.76-m f/3.0 astrograph + CCD.
H36 Sandlot Observatory, Scranton.  Observer G. Hug.  0.56-m reflector + CCD.
I52 Steward Observatory, Mt. Lemmon Station.  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.  1.0-m
    reflector + CCD.
I93 St Pardon de Conques.  Observer F. Losse.  0.40-m f/3.7 reflector + CCD.
J04 ESA Optical Ground Station, Tenerife.  Observer D. Abreu.  Measurers A.
    Knofel, D. Koschny, M. Busch, M. Micheli, E. Schwab, R. Kresken, D.
    Fohring, L. Conversi.  1.0-m f/4.4 reflector + CCD.
Y00 SONEAR Observatory, Oliveira.  Observers C. Jacques, E. Pimentel, J.
    Barros.  Measurer C. Jacques.  0.45-m f/2.9 reflector + CCD.

Orbital elements:
2021 JL7                                                 Earth MOID = 0.0609 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres                   
M 102.00808              (2000.0)            P               Q                  
n   1.10258180     Peri.  136.57510     +0.92725531     -0.04852402             
a   0.9279591      Node   230.20164     +0.02639426     +0.99757122             
e   0.4502699      Incl.   28.89705     +0.37349823     +0.04997080             
P   0.89           H   22.57          G   0.15           U   7                  
Residuals in seconds of arc
210512 F51  0.0   0.2+    210513 858  0.3+  0.0     210513 I93  0.1+  0.3-
210512 F51 (0.3+  0.5-)   210513 858  0.1+  0.1+    210514 H21  0.3-  0.3-
210512 F51  0.0   0.2-    210513 734  0.1-  0.3+    210514 H21  0.2-  0.1-
210512 474  0.1-  0.0     210513 734 (0.8+  1.6-)   210514 H21  0.2+  0.1-
210512 474  0.1-  0.1+    210513 734 (0.5+  1.6+)   210514 858  0.1+  0.3-
210512 474  0.1+  0.0     210513 734  0.5+  0.6+    210514 858  0.1+  0.3-
210512 474  0.4+  0.1+    210513 I52  0.3-  0.3-    210514 858  0.4-  0.2+
210512 J04  0.4+  0.2+    210513 I52  0.4-  0.3-    210514 033  0.0   0.2-
210512 J04  0.3-  0.5+    210513 I52  0.5-  0.2-    210514 033  0.2-  0.3-
210512 J04  0.4+  0.0     210513 I52  0.1-  0.0     210514 033  0.2-  0.2-
210513 H21  0.4-  0.1-    210513 474  0.2-  0.3-    210514 033  0.2-  0.4-
210513 H21  0.1-  0.2-    210513 474  0.1+  0.0     210514 J04  0.1+  0.1+
210513 H21  0.1-  0.1-    210513 474  0.3-  0.4-    210514 J04  0.4+  0.4+
210513 H36  0.9-  0.6-    210513 Y00  0.4-  0.5-    210515 H21  0.4+  0.1+
210513 H36  0.6-  0.1-    210513 Y00  0.2-  0.1+    210515 H21  0.3+  0.3+
210513 H36  1.0+  0.1+    210513 Y00  0.5-  0.1+    210515 H21  0.3+  0.1+
210513 858  0.2+  0.2+    210513 I93  0.3+  0.3-

Ephemeris:
2021 JL7                 a,e,i = 0.93, 0.45, 29                  q = 0.5101
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 04 15    15 07 29.2 -55 20 28   0.3499  1.2594   130.6    37.2    22.3
...
2021 04 30    13 51 52.2 -45 45 11   0.2168  1.1966   148.0    26.5    20.8
...
2021 05 08    12 58 17.4 -30 28 00   0.1667  1.1558   149.3    26.5    20.2
...
2021 05 14    12 19 44.6 -12 23 16   0.1490  1.1219   135.5    39.1    20.2
2021 05 15    12 13 45.9 -09 02 01   0.1482  1.1160   132.3    42.1    20.3
2021 05 16    12 07 56.3 -05 39 24   0.1480  1.1099   128.9    45.2    20.4
...
2021 05 22    11 36 18.2 +13 28 55   0.1589  1.0722   108.0    63.9    21.0
...
2021 05 30    11 01 46.7 +32 04 22   0.1968  1.0174    85.5    83.4    22.0
...
2021 06 14    10 06 20.7 +49 52 38   0.2948  0.9015    59.3   104.4    23.5

M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-J237




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