[Iaude] MPEC T23: 2017 SN21 [a=1.28,e=0.27,i=8.8,H=26.0]

mpec at mpcdb1.cfa.harvard.edu mpec at mpcdb1.cfa.harvard.edu
Sat Oct 7 18:13:17 EDT 2017


M.P.E.C. 2017-T23                                Issued 2017 Oct. 7, 22:09 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 SN21
 
Observations:
     K17S21N* C2017 09 30.41167 00 46 26.25 +28 24 20.8          20.4 VqET023G96
     K17S21N  C2017 09 30.41641 00 46 28.69 +28 24 05.8          21.4 VqET023G96
     K17S21N  C2017 09 30.42118 00 46 31.14 +28 23 51.0          21.0 VqET023G96
     K17S21N  C2017 09 30.42590 00 46 33.59 +28 23 36.3          20.4 VqET023G96
     K17S21N  C2017 09 30.48299 00 47 03.89 +28 20 32.0          21.1 VqET023G96
     K17S21N  C2017 09 30.48339 00 47 04.08 +28 20 30.8          20.7 VqET023G96
     K17S21N  C2017 09 30.48380 00 47 04.29 +28 20 29.4          20.9 VqET023G96
     K17S21N  C2017 09 30.48420 00 47 04.52 +28 20 28.3          20.9 VqET023G96
     K17S21N KC2017 10 01.17965900 54 21.09 +27 43 55.4          20.8 VuET023H21
     K17S21N KC2017 10 01.18838300 54 26.12 +27 43 27.3          20.9 VuET023H21
     K17S21N KC2017 10 01.19749000 54 31.41 +27 42 57.0          20.5 VuET023H21
     K17S21N  C2017 10 02.22147 01 06 22.41 +26 36 40.0          19.8 VqET023G96
     K17S21N  C2017 10 02.22188 01 06 22.67 +26 36 38.7          19.9 VqET023G96
     K17S21N  C2017 10 02.22229 01 06 22.92 +26 36 37.0          20.6 VqET023G96
     K17S21N  C2017 10 02.22275 01 06 23.26 +26 36 34.9          20.5 VqET023G96
     K17S21N  C2017 10 02.22554 01 06 25.26 +26 36 26.8          20.0 RoET023926
     K17S21N  C2017 10 02.22853 01 06 27.29 +26 36 14.2          19.8 RoET023926
     K17S21N  C2017 10 02.23152 01 06 29.28 +26 36 01.6          20.0 RoET023926
     K17S21N  C2017 10 02.41380 01 08 33.31 +26 22 22.1          19.7 RoET023926
     K17S21N  C2017 10 02.41681 01 08 35.39 +26 22 07.4          19.4 RoET023926
     K17S21N  C2017 10 02.41979 01 08 37.47 +26 21 52.3          19.9 RoET023926
     K17S21N KC2017 10 03.04939 01 17 10.45 +25 28 34.1                qET023J95
     K17S21N KC2017 10 03.06580 01 17 23.34 +25 27 04.8                qET023J95
     K17S21N KC2017 10 03.07879 01 17 33.58 +25 25 53.2          19.4 RqET023J95
     K17S21N  C2017 10 03.22935 01 19 54.43 +25 13 02.1          19.5 RoET023926
     K17S21N  C2017 10 03.23178 01 19 56.36 +25 12 48.8          20.3 RoET023926
     K17S21N  C2017 10 03.23422 01 19 58.30 +25 12 36.2          20.3 RoET023926
     K17S21N  C2017 10 03.33383 01 21 17.51 +25 03 17.9          20.1 VqET023G96
     K17S21N  C2017 10 03.33424 01 21 17.85 +25 03 15.9          20.2 VqET023G96
     K17S21N  C2017 10 03.33464 01 21 18.13 +25 03 13.2          20.1 VqET023G96
     K17S21N  C2017 10 03.33505 01 21 18.47 +25 03 10.8          20.9 VqET023G96
     K17S21N  C2017 10 04.29371 01 36 36.36 +23 18 52.6          20.6 RoET023926
     K17S21N  C2017 10 04.29597 01 36 38.50 +23 18 36.3          18.9 RoET023926
     K17S21N  C2017 10 04.29822 01 36 40.59 +23 18 19.5          19.0 RoET023926
     K17S21N KC2017 10 05.97676 02 09 32.25 +19 00 20.2                UET023J95
     K17S21N KC2017 10 06.00043 02 10 02.10 +18 55 56.7                UET023J95
     K17S21N KC2017 10 06.01570 02 10 21.44 +18 53 04.4          19.5 GUET023J95
 
Observer details:
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.  Observers D. C. Fuls, 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.
J95 Great Shefford.  Observer P. Birtwhistle.  0.40-m f/6.0 Schmidt-Cassegrain
    + CCD.
 
Orbital elements:
2017 SN21                                                Earth MOID = 0.0175 AU
Epoch 2017 Sept. 4.0 TT = JDT 2458000.5                 MPC
M 306.82944              (2000.0)            P               Q
n   0.67696819     Peri.  232.16404     +0.39913253     -0.91609446
a   1.2845683      Node   194.45750     +0.88201895     +0.39501719
e   0.2676889      Incl.    8.81619     +0.25047115     +0.06879215
P   1.46           H   26.0           G   0.15           U   7
Residuals in seconds of arc
170930 G96  0.1+  0.0     171002 G96  0.3-  0.3+    171003 926  0.2+  0.7+
170930 G96  0.1+  0.2-    171002 G96  0.0   0.1+    171003 G96  0.5+  0.1+
170930 G96  0.1-  0.0     171002 926  0.1+  0.3+    171003 G96  0.7+  0.5+
170930 G96  0.0   0.1+    171002 926  0.0   0.0     171003 G96  0.1+  0.1+
170930 G96  0.6+  0.1+    171002 926  0.5-  0.2-    171003 G96  0.3+  0.1+
170930 G96  0.3+  0.2+    171002 926  0.2+  0.5+    171004 926  0.2-  0.3+
170930 G96  0.1+  0.1+    171002 926  0.1-  0.4+    171004 926  0.1+  0.3+
170930 G96  0.3+  0.3+    171002 926  0.1-  0.1-    171004 926  0.1-  0.2-
171001 H21  0.6-  0.7-    171003 J95  0.1-  0.5-    171005 J95  0.2+  0.3+
171001 H21  0.8-  0.4-    171003 J95  0.1-  0.0     171006 J95  0.5-  0.2+
171001 H21  0.4-  0.8-    171003 J95  0.1-  0.1+    171006 J95  0.2+  0.6-
171002 G96  0.3+  0.1-    171003 926  0.5+  0.6+
171002 G96  0.1+  0.3+    171003 926  0.3+  0.2+

Ephemeris:
2017 SN21                a,e,i = 1.28, 0.27, 9                   q = 0.9407
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2017 09 07    23 28 38.6 +30 18 03   0.1599  1.1395   143.0    32.2    23.7
...
2017 09 22    23 57 39.5 +31 19 43   0.08725 1.0790   148.2    29.3    22.1
...
2017 09 30    00 42 43.7 +28 43 30   0.05262 1.0489   153.6    25.1    20.9
...
2017 10 06    02 09 56.3 +18 58 46   0.03081 1.0278   155.4    23.9    19.6
2017 10 07    02 33 56.1 +15 26 09   0.02806 1.0245   152.7    26.6    19.5
2017 10 08    03 01 28.9 +10 59 32   0.02579 1.0212   148.1    31.2    19.4
...
2017 10 14    06 21 28.9 -22 25 41   0.02719 1.0023    99.4    79.1    20.9
...
2017 10 22    08 41 59.4 -34 26 51   0.05400 0.9803    72.4   104.6    23.5
...
2017 11 06    09 57 23.2 -36 00 47   0.1139  0.9509    66.1   107.6    25.2

A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-T23




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