• Processing (Info)

    • MPEC 2021-F24 : 2021 EM5

    The following Minor Planet Electronic Circular may be linked-to from your own Web pages, but must not otherwise be redistributed electronically.

    A form allowing access to any MPEC is at the bottom of this page.

    Read MPEC 2021-F23 Read MPEC 2021-F25 

    M.P.E.C. 2021-F24                                Issued 2021 March 18, 14:54 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 EM5                                 


Observations:
     K21E05M* C2021 03 15.56250614 50 16.525-10 22 41.27         21.46wUEF024F51
     K21E05M  C2021 03 15.57378014 50 14.106-10 22 46.50         21.76wUEF024F51
     K21E05M  C2021 03 15.58508214 50 11.695-10 22 51.66         21.75wUEF024F51
     K21E05M 2C2021 03 17.11967914 45 08.262-10 34 20.45         21.5 GVEF024J04
     K21E05M 2C2021 03 17.13547314 45 04.836-10 34 26.97         21.5 GVEF024J04
     K21E05M |C2021 03 18.27775 14 41 13.23 -10 41 31.7          22.1 GVEF024807
     K21E05M |C2021 03 18.28145 14 41 12.40 -10 41 33.0          22.3 GVEF024807
     K21E05M |C2021 03 18.28514 14 41 11.61 -10 41 34.8          22.3 GVEF024807
     K21E05M KC2021 03 18.46273 14 40 34.19 -10 43 26.6          21.6 RoEF024691
     K21E05M KC2021 03 18.47009 14 40 32.58 -10 43 29.2          21.4 RoEF024691
     K21E05M KC2021 03 18.47745 14 40 30.95 -10 43 31.8          21.2 RoEF024691
     K21E05M KC2021 03 18.57693114 40 12.18 -10 43 18.6          21.4 GVEF024474
     K21E05M KC2021 03 18.57987014 40 11.57 -10 43 19.9          21.5 GVEF024474
     K21E05M KC2021 03 18.58280914 40 10.88 -10 43 20.8          21.7 GVEF024474
     K21E05M KC2021 03 18.58574814 40 10.25 -10 43 22.0          21.4 GVEF024474

Observer details:
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.
691 Steward Observatory, Kitt Peak-Spacewatch.  Observer M. J. Brucker.  0.9-m
    f/3 reflector + 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.
J04 ESA Optical Ground Station, Tenerife.  Observer P. Ruiz.  Measurers M.
    Micheli, R. Kresken, D. Koschny, L. Conversi, A. Knofel, M. Busch, E.
    Schwab.  1.0-m f/4.4 reflector + CCD.

Orbital elements:
2021 EM5                                                 Earth MOID = 0.0022 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Pike                    
M 355.67925              (2000.0)            P               Q                  
n   0.73254958     Peri.   71.67336     +0.05874264     -0.99804610             
a   1.2187408      Node    15.00677     +0.88204590     +0.04190403             
e   0.3070312      Incl.    4.71641     +0.46748725     +0.04634690             
P   1.35           H   23.54          G   0.15           U   8                  
Residuals in seconds of arc
210315 F51  0.2+  0.1-    210318 807  0.1+  0.1+    210318 691  0.7-  0.4+
210315 F51  0.1-  0.0-    210318 807  0.1-  0.3+    210318 474  0.2+  0.4-
210315 F51  0.1-  0.1+    210318 807  0.2+  0.0-    210318 474  0.7+  0.5-
210317 J04  0.1+  0.3-    210318 691  0.7-  0.0+    210318 474  0.1-  0.3-
210317 J04  0.0-  0.1+    210318 691  0.5-  0.2+    210318 474  0.0+  0.3-

Ephemeris:
2021 EM5                 a,e,i = 1.22, 0.31, 5                   q = 0.8445
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 02 16    15 57 15.1 -04 29 38   0.1865  1.0027    89.2    80.1    22.7
...
2021 03 03    15 25 58.6 -08 11 26   0.1957  1.0763   110.8    59.5    22.3
...
2021 03 11    15 04 29.9 -09 42 05   0.2000  1.1165   123.6    47.8    22.1
...
2021 03 17    14 45 31.6 -10 33 02   0.2048  1.1465   133.9    38.7    21.9
2021 03 18    14 42 09.4 -10 39 56   0.2059  1.1515   135.7    37.2    21.9
2021 03 19    14 38 44.3 -10 46 21   0.2070  1.1565   137.4    35.6    21.9
...
2021 03 25    14 17 30.7 -11 14 43   0.2157  1.1861   148.3    26.2    21.8
...
2021 04 02    13 49 03.9 -11 26 42   0.2338  1.2247   162.8    14.0    21.6
...
2021 04 17    13 05 10.4 -10 57 23   0.2924  1.2936   171.4     6.6    21.9

M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-F24

    Read MPEC 2021-F23 Read MPEC 2021-F25

    MPEC number:

    Enter an MPEC number in one of the following forms:

    • 1997-B01 (the full form)
    • J97B01 (the packed version of the full form)
    • B01 (the abbreviated form)