• MPC Preparation (Info)

  • MPEC 2017-S240: 2017 SF20

    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 2017-S239 Read MPEC 2017-S241


    M.P.E.C. 2017-S240                               Issued 2017 Sept. 30, 18:22 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@CFA.HARVARD.EDU
                URL https://www.minorplanetcenter.net/    ISSN 1523-6714
    
                                       2017 SF20
    
    Observations:
         K17S20F* C2017 09 28.36701 00 42 50.25 -05 38 13.6          19.4 VqES240G96
         K17S20F  C2017 09 28.37232 00 43 03.42 -05 36 55.4          19.8 VqES240G96
         K17S20F  C2017 09 28.37762 00 43 16.37 -05 35 39.0          19.7 VqES240G96
         K17S20F  C2017 09 28.43729 00 45 40.27 -05 21 33.4          19.6 VqES240G96
         K17S20F  C2017 09 28.43775 00 45 41.39 -05 21 26.7          19.5 VqES240G96
         K17S20F  C2017 09 28.43822 00 45 42.47 -05 21 20.6          19.6 VqES240G96
         K17S20F  C2017 09 28.43867 00 45 43.51 -05 21 14.3          19.7 VqES240G96
         K17S20F  C2017 09 28.45880 00 46 30.92 -05 16 39.1                qES240I52
         K17S20F  C2017 09 28.45922 00 46 31.92 -05 16 32.6                qES240I52
         K17S20F  C2017 09 28.45964 00 46 32.80 -05 16 27.9          20.0 VqES240I52
         K17S20F KC2017 09 29.23108301 10 36.04 -03 10 13.4          20.7 VuES240H21
         K17S20F KC2017 09 29.23503001 10 40.61 -03 09 44.8          20.3 VuES240H21
         K17S20F KC2017 09 29.24027301 10 46.65 -03 09 06.7          20.3 VuES240H21
         K17S20F  C2017 09 30.27328 01 27 25.73 -01 36 12.6                qES240G96
         K17S20F  C2017 09 30.27405 01 27 26.15 -01 36 08.8                qES240G96
         K17S20F  C2017 09 30.27480 01 27 26.54 -01 36 06.5          20.6 VqES240G96
         K17S20F  C2017 09 30.27556 01 27 26.96 -01 36 03.0          20.9 VqES240G96
         K17S20F  C2017 09 30.34135 01 28 03.65 -01 31 51.4                qES240I52
         K17S20F  C2017 09 30.34566 01 28 05.97 -01 31 34.6                qES240I52
         K17S20F  C2017 09 30.34978 01 28 08.18 -01 31 19.4          20.5 VqES240I52
         K17S20F  C2017 09 30.35187 01 28 09.35 -01 31 11.6                qES240I52
    
    Observer details:
    G96 Mt. Lemmon Survey.  Observer J. A. Johnson.  Measurers E. J. Christensen,
        D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson, R. A. Kowalski,
        S. M. Larson, G. J. Leonard, R. G. Matheny, R. L. Seaman, F. C. Shelly.
        1.5-m reflector + 10K CCD.
    H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
        Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes.  0.81-m f/4.0
        astrograph + CCD.
    I52 Steward Observatory, Mt. Lemmon Station.  Observer R. A. Kowalski.
        Measurers E. J. Christensen, D. C. Fuls, A. R. Gibbs, A. D. Grauer,
        J. A. Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard, R. G. Matheny,
        R. L. Seaman, F. C. Shelly.  1.0-m reflector + CCD.
    
    Orbital elements:
    2017 SF20                                                Earth MOID = 0.0004 AU
    Epoch 2017 Sept. 4.0 TT = JDT 2458000.5                 MPC
    M   4.59478              (2000.0)            P               Q
    n   0.41432964     Peri.  136.56132     +0.76366953     +0.64560024
    a   1.7819905      Node   183.23242     -0.60605350     +0.71525784
    e   0.4868064      Incl.    3.07893     -0.22250393     +0.26759401
    P   2.38           H   28.5           G   0.15           U   7
    Residuals in seconds of arc
    170928 G96  0.1-  0.5-    170928 I52  0.1-  0.5-    170930 G96  0.5+  0.7+
    170928 G96  0.6+  0.3+    170928 I52  0.2+  0.3+    170930 G96  0.2-  0.1+
    170928 G96  0.9-  0.3-    170928 I52  1.4-  0.7-    170930 G96  0.4-  0.6+
    170928 G96  0.5+  0.2+    170929 H21  0.1-  0.3+    170930 I52  0.1+  0.6-
    170928 G96  0.9+  0.5+    170929 H21  0.1-  0.1+    170930 I52  0.2-  0.1-
    170928 G96  0.4+  0.1+    170929 H21  0.2-  0.2+    170930 I52  0.5-  0.5-
    170928 G96  0.1+  0.2+    170930 G96  0.8+  0.1-    170930 I52  0.1+  0.6-
    
    Ephemeris:
    2017 SF20                a,e,i = 1.78, 0.49, 3                   q = 0.9145
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2017 08 31    14 03 21.6 -02 20 17   0.1647  0.9188    52.6   119.2    29.2
    ...
    2017 09 15    14 21 12.0 -03 27 26   0.07104 0.9550    43.0   134.1    28.8
    ...
    2017 09 23    14 54 03.0 -06 13 55   0.02248 0.9874    43.9   135.2    26.5
    ...
    2017 09 29    01 04 53.9 -03 34 29   0.01525 1.0167   167.6    12.2    20.2
    2017 09 30    01 23 49.0 -01 51 38   0.02114 1.0219   164.6    15.1    21.0
    2017 10 01    01 34 23.5 -00 53 18   0.02714 1.0272   163.1    16.5    21.6
    ...
    2017 10 07    01 54 53.8 +01 05 43   0.06390 1.0608   163.3    15.7    23.5
    ...
    2017 10 15    01 59 51.3 +01 49 58   0.1149  1.1099   168.1    10.7    24.7
    ...
    2017 10 30    02 00 31.0 +02 46 00   0.2212  1.2106   168.4     9.5    26.3
    
    A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-S240
    

    Read MPEC 2017-S239 Read MPEC 2017-S241


    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)