• MPC Preparation (Info)

    • MPEC 2021-C284 : 2021 CM7

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    M.P.E.C. 2021-C284                            Issued 2021 February 14, 00:46 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@CFA.HARVARD.EDU
            URL https://www.minorplanetcenter.net/    ISSN 1523-6714

                                2021 CM7                                 


Observations:
     K21C07M  C2021 02 06.24877 08 43 58.23 +08 14 00.5          22.4 GVEC284G96
     K21C07M  C2021 02 06.25903 08 43 55.65 +08 14 05.9                VEC284G96
     K21C07M* C2021 02 11.30146308 20 46.774+09 00 21.24         21.63wUEC284F51
     K21C07M  C2021 02 11.31150208 20 43.763+09 00 27.24         21.31wUEC284F51
     K21C07M  C2021 02 11.32154308 20 40.752+09 00 32.96         21.47wUEC284F51
     K21C07M  C2021 02 11.33160408 20 37.716+09 00 38.94         21.82wUEC284F51
     K21C07M ^C2021 02 12.30491708 15 46.516+09 10 10.79         21.80GVEC284568
     K21C07M ^C2021 02 12.30589808 15 46.214+09 10 11.41         21.69GVEC284568
     K21C07M ^C2021 02 12.30687808 15 45.914+09 10 11.97         21.72GVEC284568
     K21C07M |C2021 02 13.07967 08 11 49.60 +09 18 03.5          21.5 GVEC284807
     K21C07M |C2021 02 13.08161 08 11 48.98 +09 18 04.3          21.3 GVEC284807
     K21C07M |C2021 02 13.08355 08 11 48.35 +09 18 04.7          21.6 GVEC284807
     K21C07M 1C2021 02 13.88020 08 07 40.22 +09 25 45.3          23.5 VVEC284033
     K21C07M 1C2021 02 13.88350 08 07 39.17 +09 25 47.9          23.6 VVEC284033
     K21C07M 1C2021 02 13.88732 08 07 37.95 +09 25 50.0          23.2 VVEC284033

Observer details:
033 Karl Schwarzschild Observatory, Tautenburg.  Observers S. Melnikov, C.
    Hoegner, B. Stecklum.  Measurer B. Stecklum.  1.34-m f/3 Schmidt + CCD.
568 Mauna Kea.  Observers R. Wainscoat, H. Januszewski, H. Flewelling.
    Measurers R. Weryk, R. Wainscoat.  3.6-m Canada-France-Hawaii Telescope +
    CCD.
807 Cerro Tololo Observatory, La Serena.  Observers T. Linder, R. Holmes.
    1.00-m f/10.0 astrograph + 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.
G96 Mt. Lemmon Survey.  Observer G. J. Leonard.  Measurers B. Gray, D. Rankin,
    F. C. Shelly.  1.5-m reflector + 10K CCD.

Orbital elements:
2021 CM7                                                 Earth MOID = 0.0790 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres
M 319.18799              (2000.0)            P               Q
n   0.31496114     Peri.    3.86789     +0.31498389     +0.93989380
a   2.1394299      Node   284.52870     -0.87439346     +0.23335362
e   0.9322532      Incl.    7.82842     -0.36908160     +0.24929047
P   3.13           H   20.9           G   0.15           U   8
Residuals in seconds of arc
210206 G96  0.6-  0.0     210211 F51  0.1-  0.0     210213 807  0.0   0.0
210206 G96  0.6+  0.1+    210212 568  0.0   0.0     210213 807  0.3-  0.7-
210211 F51  0.0   0.0     210212 568  0.0   0.1+    210213 033  0.1+  0.3-
210211 F51  0.0   0.1+    210212 568  0.0   0.0     210213 033  0.0   0.3+
210211 F51  0.1+  0.1-    210213 807  0.2+  0.4+    210213 033  0.1-  0.1+

Ephemeris:
2021 CM7                 a,e,i = 2.14, 0.93, 8                   q = 0.1449
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 01 15    09 46 57.4 +06 24 17   1.0599  1.9615   147.4    15.7    23.3
...
2021 01 30    09 11 08.9 +07 20 28   0.7990  1.7749   168.4     6.4    22.1
...
2021 02 07    08 40 44.5 +08 20 34   0.6916  1.6684   167.6     7.3    21.7
...
2021 02 13    08 12 14.1 +09 17 06   0.6292  1.5847   156.6    14.3    21.7
2021 02 14    08 07 02.7 +09 27 07   0.6205  1.5705   154.5    15.7    21.7
2021 02 15    08 01 44.6 +09 37 12   0.6122  1.5561   152.3    17.1    21.7
...
2021 02 21    07 27 58.9 +10 37 30   0.5728  1.4678   138.5    26.5    21.7
...
2021 03 01    06 40 19.5 +11 47 21   0.5457  1.3436   119.1    40.1    21.8
...
2021 03 16    05 16 55.3 +12 54 06   0.5528  1.0871    84.1    65.5    22.1

M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-C284

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