[Iaude] MPEC S238: 2017 SC20 [a=1.68,e=0.45,i=10.4,H=23.8]

mpec at mpcdb1.cfa.harvard.edu mpec at mpcdb1.cfa.harvard.edu
Sat Sep 30 14:19:16 EDT 2017


M.P.E.C. 2017-S238                               Issued 2017 Sept. 30, 18:15 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 http://www.minorplanetcenter.net/    ISSN 1523-6714


                                   2017 SC20
 
Observations:
     K17S20C  C2017 09 25.23580 20 49 43.168+02 27 57.45         19.6 wLES238F51
     K17S20C* C2017 09 28.13823 21 51 30.22 -03 21 59.3          19.5 VqES238G96
     K17S20C  C2017 09 28.14399 21 51 36.35 -03 22 34.2          19.5 VqES238G96
     K17S20C  C2017 09 28.14976 21 51 42.50 -03 23 10.0          19.8 VqES238G96
     K17S20C  C2017 09 28.15551 21 51 48.58 -03 23 45.3          19.7 VqES238G96
     K17S20C  C2017 09 28.18690 21 52 21.78 -03 26 56.3          19.8 VqES238G96
     K17S20C  C2017 09 28.18731 21 52 22.21 -03 26 58.7          19.4 VqES238G96
     K17S20C  C2017 09 28.18775 21 52 22.68 -03 27 01.3          19.9 VqES238G96
     K17S20C  C2017 09 28.18816 21 52 23.11 -03 27 03.7          19.6 VqES238G96
     K17S20C  C2017 09 28.18897 21 52 23.98 -03 27 08.9          20.0 VqES238I52
     K17S20C  C2017 09 28.18938 21 52 24.40 -03 27 11.4          19.7 VqES238I52
     K17S20C  C2017 09 28.18981 21 52 24.84 -03 27 13.6          20.1 VqES238I52
     K17S20C  C2017 09 28.19022 21 52 25.29 -03 27 16.6          20.4 VqES238I52
     K17S20C  C2017 09 28.29505 21 54 15.48 -03 37 47.3          19.2 VqES238I52
     K17S20C  C2017 09 28.29546 21 54 15.95 -03 37 50.1          19.0 VqES238I52
     K17S20C  C2017 09 28.29587 21 54 16.36 -03 37 52.5          19.3 VqES238I52
     K17S20C  C2017 09 28.29629 21 54 16.79 -03 37 55.1          19.3 VqES238I52
     K17S20C KC2017 09 29.07514922 07 52.72 -04 51 51.4          20.0 VuES238H21
     K17S20C KC2017 09 29.08231822 07 59.62 -04 52 30.1          20.4 VuES238H21
     K17S20C KC2017 09 29.08980322 08 06.78 -04 53 10.2          20.5 VuES238H21
     K17S20C  C2017 09 29.12696 22 08 44.81 -04 56 16.6          18.7 RoES238926
     K17S20C  C2017 09 29.12904 22 08 46.83 -04 56 27.6          18.6 RoES238926
     K17S20C  C2017 09 29.13001 22 08 47.72 -04 56 34.5          19.8 VqES238G96
     K17S20C  C2017 09 29.13113 22 08 48.83 -04 56 38.8          18.8 RoES238926
     K17S20C  C2017 09 29.14908 22 09 05.87 -04 58 16.6          19.7 VqES238G96
     K17S20C  C2017 09 29.16121 22 09 17.36 -04 59 21.3          19.6 VqES238G96
     K17S20C  C2017 09 29.16899 22 09 24.72 -05 00 02.5          19.9 VqES238G96
     K17S20C  C2017 09 29.18442 22 09 39.30 -05 01 24.5          19.5 VqES238G96
     K17S20C  C2017 09 29.18487 22 09 39.71 -05 01 26.6          20.0 VqES238G96
     K17S20C  C2017 09 29.18528 22 09 40.11 -05 01 28.8          19.3 VqES238G96
     K17S20C  C2017 09 29.18568 22 09 40.47 -05 01 31.0          19.5 VqES238G96
     K17S20C  C2017 09 29.19102 22 09 45.53 -05 01 59.6          19.8 VqES238G96
     K17S20C  C2017 09 29.19249 22 09 46.92 -05 02 07.3          19.8 VqES238G96
     K17S20C  C2017 09 29.19290 22 09 47.29 -05 02 09.3          19.8 VqES238G96
     K17S20C  C2017 09 29.19636 22 09 50.56 -05 02 27.7          19.5 VqES238G96
     K17S20C  C2017 09 29.19676 22 09 50.92 -05 02 29.8          19.5 VqES238G96
     K17S20C  C2017 09 29.19716 22 09 51.29 -05 02 31.9          19.7 VqES238G96
     K17S20C  C2017 09 29.19759 22 09 51.69 -05 02 34.3          20.0 VqES238G96
     K17S20C  C2017 09 29.24749 22 10 38.55 -05 06 56.8          20.0 VqES238I52
     K17S20C  C2017 09 29.24790 22 10 38.92 -05 06 59.0          19.9 VqES238I52
     K17S20C  C2017 09 29.24831 22 10 39.32 -05 07 01.4          19.9 VqES238I52
     K17S20C  C2017 09 29.24873 22 10 39.71 -05 07 03.5          20.0 VqES238I52
     K17S20C  C2017 09 29.25225 22 10 43.01 -05 07 21.4          20.1 VqES238G96
     K17S20C  C2017 09 29.25265 22 10 43.39 -05 07 23.7          19.7 VqES238G96
     K17S20C  C2017 09 29.25306 22 10 43.76 -05 07 26.4                qES238G96
     K17S20C  C2017 09 29.25346 22 10 44.13 -05 07 28.0                qES238G96
     K17S20C  C2017 09 29.28560 22 11 14.23 -05 10 15.6          19.4 VqES238I52
     K17S20C  C2017 09 29.28656 22 11 15.10 -05 10 21.0                qES238I52
     K17S20C  C2017 09 29.28752 22 11 16.00 -05 10 25.9                qES238I52
     K17S20C  C2017 09 29.28891 22 11 17.32 -05 10 32.8          19.7 VqES238I52
     K17S20C  C2017 09 30.15933 22 24 47.13 -06 21 35.4                qES238I52
     K17S20C  C2017 09 30.16029 22 24 47.93 -06 21 39.5                qES238I52
     K17S20C  C2017 09 30.16126 22 24 48.76 -06 21 43.9                qES238I52
     K17S20C  C2017 09 30.16224 22 24 49.57 -06 21 48.6          19.0 VqES238I52
 
Observer details:
926 Tenagra II Observatory.  Observers M. Schwartz, P. R. Holvorcem.  Measurer
    M. Schwartz.  0.81-m f/7 Ritchey-Chretien + CCD.
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, T. Lowe, A. Schultz,
    M. Willman.  Measurers K. Chambers, S. Chastel, L. Denneau, H. Flewelling,
    M. Huber, E. Lilly, E. Magnier, R. Wainscoat, C. Waters, R. Weryk.  1.8-m
    Ritchey-Chretien + CCD.
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.  0.76-m f/3.0
    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 SC20                                                Earth MOID = 0.0388 AU
Epoch 2017 Sept. 4.0 TT = JDT 2458000.5                 MPC
M   9.76832              (2000.0)            P               Q
n   0.45345215     Peri.  120.56691     +0.59522146     +0.80333716
a   1.6779605      Node   186.06724     -0.78500755     +0.57626489
e   0.4548076      Incl.   10.35331     -0.17168158     +0.15022711
P   2.17           H   23.8           G   0.15           U   7
Residuals in seconds of arc
170925 F51  0.0   0.0     170929 H21  0.2-  0.0     170929 G96  0.0   0.1+
170928 G96  0.0   0.1-    170929 H21  0.5-  0.2+    170929 G96  0.1-  0.0
170928 G96  0.1+  0.3+    170929 926  0.6-  0.1-    170929 I52  0.1+  0.0
170928 G96  0.4+  0.2-    170929 926  0.0   0.1+    170929 I52  0.1-  0.0
170928 G96  0.1+  0.4-    170929 G96  0.1+  0.0     170929 I52  0.1+  0.3-
170928 G96  0.1-  0.0     170929 926  0.1+  0.1+    170929 I52  0.0   0.2-
170928 G96  0.1-  0.1+    170929 G96  0.2+  0.1-    170929 G96  0.1+  0.3+
170928 G96  0.0   0.1+    170929 G96  0.1+  0.1-    170929 G96  0.2+  0.1+
170928 G96  0.1-  0.2+    170929 G96  0.1+  0.1+    170929 G96  0.1-  0.5-
170928 I52  0.2+  0.0     170929 G96  0.2+  0.0     170929 G96  0.1-  0.0
170928 I52  0.0   0.0     170929 G96  0.0   0.3+    170929 I52  0.1-  0.1-
170928 I52  0.2-  0.4+    170929 G96  0.2+  0.3+    170929 I52  0.5-  0.5-
170928 I52  0.0   0.1-    170929 G96  0.1-  0.2+    170929 I52  0.5-  0.4-
170928 I52  0.1-  0.4+    170929 G96  0.3+  0.1-    170929 I52  0.2-  0.1-
170928 I52  0.5+  0.1+    170929 G96  0.4+  0.0     170930 I52  0.1+  0.2-
170928 I52  0.1+  0.1+    170929 G96  0.2+  0.2+    170930 I52  0.0   0.1+
170928 I52  0.0   0.0     170929 G96  0.3+  0.1+    170930 I52  0.2+  0.2+
170929 H21  0.4-  0.0     170929 G96  0.1+  0.1+    170930 I52  0.1-  0.0

Ephemeris:
2017 SC20                a,e,i = 1.68, 0.45, 10                  q = 0.9148
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2017 08 31    14 47 19.6 +20 50 20   0.1728  0.9390    61.4   109.3    24.0
...
2017 09 15    16 50 10.7 +19 26 18   0.08166 0.9938    79.3    96.0    21.8
...
2017 09 23    19 52 23.6 +07 44 39   0.06013 1.0330   117.9    59.2    19.9
...
2017 09 29    22 06 34.4 -04 43 42   0.07653 1.0658   145.6    32.1    19.7
2017 09 30    22 22 22.9 -06 08 06   0.08142 1.0715   148.2    29.5    19.8
2017 10 01    22 36 28.4 -07 20 47   0.08673 1.0773   150.2    27.5    19.9
...
2017 10 07    23 34 24.6 -11 42 23   0.1245  1.1131   154.5    22.7    20.6
...
2017 10 15    00 13 19.4 -13 38 10   0.1839  1.1634   152.5    23.3    21.6
...
2017 10 30    00 47 16.2 -13 23 08   0.3133  1.2626   145.0    26.8    23.0

A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-S238




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