[Iaude] MPEC S241: 2017 SG20 [a=2.52,e=0.60,i=13.2,H=25.6]

mpec at mpcdb1.cfa.harvard.edu mpec at mpcdb1.cfa.harvard.edu
Sat Sep 30 14:29:18 EDT 2017


M.P.E.C. 2017-S241                               Issued 2017 Sept. 30, 18:25 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 SG20
 
Observations:
     K17S20G* C2017 09 28.39414 00 50 44.56 -01 51 44.9          19.9 VqES241G96
     K17S20G  C2017 09 28.39940 00 50 46.50 -01 49 39.0          19.6 VqES241G96
     K17S20G  C2017 09 28.41478 00 50 52.16 -01 43 29.8          19.4 VqES241G96
     K17S20G  C2017 09 28.42004 00 50 54.10 -01 41 24.3          19.7 VqES241G96
     K17S20G  C2017 09 28.44994 00 51 05.35 -01 29 24.3          19.3 VqES241I52
     K17S20G  C2017 09 28.45035 00 51 05.51 -01 29 14.4          19.8 VqES241I52
     K17S20G  C2017 09 28.45076 00 51 05.62 -01 29 03.4          18.8 VqES241I52
     K17S20G  C2017 09 28.45118 00 51 05.81 -01 28 54.0          19.0 VqES241I52
     K17S20G KC2017 09 29.01046 00 55 20.72 +02 24 49.3          18.8  oES241K88
     K17S20G KC2017 09 29.01381 00 55 22.13 +02 26 17.6          18.9  oES241K88
     K17S20G KC2017 09 29.01715 00 55 23.46 +02 27 45.5          18.8  oES241K88
     K17S20G KC2017 09 29.24663700 57 16.29 +04 09 58.0          19.5 VuES241H21
     K17S20G KC2017 09 29.24905600 57 17.32 +04 11 03.4          19.7 VuES241H21
     K17S20G KC2017 09 29.25203600 57 18.56 +04 12 24.3          19.7 VuES241H21
     K17S20G  C2017 09 29.43267 00 58 39.04 +05 35 12.9          19.2 RoES241926
     K17S20G  C2017 09 29.43410 00 58 39.67 +05 35 52.5          19.2 RoES241926
     K17S20G  C2017 09 29.43556 00 58 40.29 +05 36 32.7          19.3 RoES241926
     K17S20G KC2017 09 29.91263 01 02 56.37 +09 22 41.8          18.8  oES241K88
     K17S20G KC2017 09 29.91561 01 02 57.79 +09 24 09.3          18.6  oES241K88
     K17S20G KC2017 09 29.98943 01 03 34.59 +10 00 35.8          19.9  UES241104
     K17S20G KC2017 09 29.99266 01 03 36.13 +10 02 11.6          19.1  UES241104
     K17S20G KC2017 09 29.99590 01 03 37.69 +10 03 47.3          19.4  UES241104
     K17S20G KC2017 09 29.99914 01 03 39.20 +10 05 23.3          19.4  UES241104
     K17S20G KC2017 09 30.02495 01 03 48.96 +10 17 46.1          19.4 RqES241585
     K17S20G KC2017 09 30.02599 01 03 49.47 +10 18 17.1          19.3 RqES241585
     K17S20G KC2017 09 30.02625 01 03 49.59 +10 18 24.8          19.6 RqES241585
     K17S20G KC2017 09 30.02670 01 03 49.83 +10 18 37.7          19.4 RqES241585
     K17S20G KC2017 09 30.02742 01 03 50.19 +10 18 59.3          19.6 RqES241585
     K17S20G  C2017 09 30.22408 01 05 51.26 +11 58 12.1                qES241I52
     K17S20G  C2017 09 30.22517 01 05 51.84 +11 58 45.7          19.0 VqES241I52
     K17S20G  C2017 09 30.22627 01 05 52.37 +11 59 19.2                qES241I52
     K17S20G  C2017 09 30.22737 01 05 52.89 +11 59 52.8                qES241I52
 
Observer details:
104 San Marcello Pistoiese.  Observers P. Bacci, M. Maestripieri.  Measurers
    P. Bacci, L. Tesi, G. Fagioli.  0.60-m reflector + CCD.
585 Kyiv comet station.  Observer A. Baransky.  0.7-m f/4 reflector + CCD.
926 Tenagra II Observatory.  Observers M. Schwartz, P. R. Holvorcem.  Measurer
    M. Schwartz.  0.81-m f/7 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.
K88 GINOP-KHK, Piszkesteto.  Observers O. Hanyecz, K. Sarneczky.  Measurer
    K. Sarneczky.  0.60-m Schmidt + CCD.
 
Orbital elements:
2017 SG20                                                Earth MOID = 0.0366 AU
Epoch 2017 Sept. 4.0 TT = JDT 2458000.5                 MPC
M 348.57870              (2000.0)            P               Q
n   0.24698004     Peri.   24.92486     +0.85251202     -0.52201969
a   2.5159083      Node     6.73240     +0.43301848     +0.67657638
e   0.5995476      Incl.   13.21939     +0.29277680     +0.51936485
P   3.99           H   25.6           G   0.15           U   7
Residuals in seconds of arc
170928 G96  0.0   0.4-    170929 H21  0.2-  0.2-    170929 104  0.5-  0.0
170928 G96  0.3+  0.4-    170929 H21  0.1+  0.3-    170930 585  0.3+  0.4-
170928 G96  0.3+  0.3+    170929 H21  0.1+  0.0     170930 585  0.2+  0.2-
170928 G96  0.1+  0.5-    170929 926  0.1-  0.3+    170930 585  0.1+  0.2-
170928 I52  0.2+  0.1-    170929 926  0.0   0.4+    170930 585  0.4+  0.6-
170928 I52  0.2+  0.1-    170929 926  0.3-  0.2+    170930 585  0.4+  0.3-
170928 I52  0.5-  1.0+    170929 K88  0.2+  0.6+    170930 I52  0.2-  0.2-
170928 I52  0.0   0.3+    170929 K88  0.2+  0.6+    170930 I52  0.3+  0.2+
170929 K88  0.2-  0.6-    170929 104  0.3-  0.2-    170930 I52  0.0   0.2+
170929 K88  0.2+  0.0     170929 104  0.2-  0.0     170930 I52  0.4-  0.4+
170929 K88  0.5-  0.4+    170929 104  0.0   0.1-

Ephemeris:
2017 SG20                a,e,i = 2.52, 0.60, 13                  q = 1.0075
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2017 08 31    23 44 39.6 -42 44 16   0.2270  1.1983   142.9    30.5    24.1
...
2017 09 15    00 03 16.1 -37 30 42   0.1224  1.1080   144.8    31.5    22.6
...
2017 09 23    00 23 26.6 -25 19 14   0.07269 1.0694   154.1    24.2    21.2
...
2017 09 29    00 55 18.2 +02 22 16   0.04447 1.0458   171.5     8.1    19.5
2017 09 30    01 03 39.8 +10 07 22   0.04176 1.0423   167.8    11.7    19.5
2017 10 01    01 13 26.9 +18 43 35   0.03999 1.0391   160.9    18.4    19.6
...
2017 10 07    03 08 15.9 +64 36 33   0.05064 1.0226   115.9    61.5    21.4
...
2017 10 15    08 03 35.7 +74 32 13   0.09227 1.0098    95.2    79.6    23.2
...
2017 10 30    10 13 52.5 +67 33 30   0.1787  1.0156    92.1    77.7    24.6

A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-S241




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