• MPC Preparation (Info)

  • MPEC 2021-P110 : 2021 PN4

    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-P109 Read MPEC 2021-P111


    M.P.E.C. 2021-P110                              Issued 2021 August 10, 08:21 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 PN4                                 
    
    
    Observations:
         K21P04N* C2021 08 04.34383320 02 22.516-33 21 18.75         21.37wUEP110F51
         K21P04N  C2021 08 04.35360120 02 23.894-33 21 21.99         21.73wUEP110F51
         K21P04N  C2021 08 04.36338220 02 25.241-33 21 25.92         21.33wUEP110F51
         K21P04N  C2021 08 04.37316020 02 26.629-33 21 29.31         21.56wUEP110F51
         K21P04N  C2021 08 05.33114120 04 59.651-33 26 20.51         22.29GVEP110F51
         K21P04N  C2021 08 05.33975620 05 00.872-33 26 23.44         23.04GVEP110F51
         K21P04N  C2021 08 05.34840320 05 02.083-33 26 25.73         21.91GVEP110F51
         K21P04N  C2021 08 05.35703920 05 03.303-33 26 28.65         21.93GVEP110F51
         K21P04N KC2021 08 09.48442120 15 44.01 -33 38 08.8          21.6 GVEP110474
         K21P04N KC2021 08 09.49145920 15 44.97 -33 38 09.5          21.5 GVEP110474
         K21P04N KC2021 08 09.49849620 15 45.93 -33 38 09.2          21.8 GVEP110474
    
    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.
    F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, T. Lowe, A. Schultz, I.
        Smith, K. Chambers.  Measurers K. Chambers, S. Chastel, T. de Boer, J.
        Fairlamb, H. Gao, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo, R.
        Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
    
    Orbital elements:
    2021 PN4                                                 Earth MOID = 0.1867 AU
    Epoch 2021 July 5.0 TT = JDT 2459400.5                  Veres                   
    M 356.90650              (2000.0)            P               Q                  
    n   0.33164236     Peri.  191.54621     +0.35266337     +0.93260057             
    a   2.0670741      Node    99.14068     -0.85222926     +0.35396000             
    e   0.4182075      Incl.    4.45629     -0.38643735     +0.07048748             
    P   2.97           H   23.98          G   0.15           U   8                  
    Residuals in seconds of arc
    210804 F51  0.3+  0.1-    210805 F51  0.0   0.2-    210809 474  0.2+  0.2-
    210804 F51  0.2+  0.3+    210805 F51  0.0   0.3-    210809 474  0.0   0.3-
    210804 F51  0.2-  0.1-    210805 F51  0.0   0.3+    210809 474  0.2-  0.5+
    210804 F51  0.1-  0.0     210805 F51  0.1+  0.1+
    
    Ephemeris:
    2021 PN4                 a,e,i = 2.07, 0.42, 4                   q = 1.2026
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2021 07 11    18 56 31.7 -27 05 55   0.1878  1.2031   172.6     6.3    21.2
    ...
    2021 07 26    19 36 48.2 -31 51 27   0.1991  1.2084   164.2    13.3    21.7
    ...
    2021 08 03    19 58 45.7 -33 12 35   0.2146  1.2190   160.3    16.3    21.9
    ...
    2021 08 09    20 14 29.8 -33 37 31   0.2305  1.2302   157.6    18.3    22.2
    2021 08 10    20 17 02.2 -33 38 50   0.2335  1.2324   157.2    18.6    22.2
    2021 08 11    20 19 33.0 -33 39 24   0.2367  1.2346   156.8    18.9    22.3
    ...
    2021 08 17    20 34 04.7 -33 27 43   0.2574  1.2494   154.3    20.6    22.5
    ...
    2021 08 25    20 51 54.2 -32 38 17   0.2908  1.2731   151.0    22.6    22.9
    ...
    2021 09 09    21 21 02.1 -29 55 16   0.3714  1.3277   144.6    26.1    23.6
    
    M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-P110
    


    Read MPEC 2021-P109 Read MPEC 2021-P111


    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)