• MPC Preparation (Info)

    • MPEC 2017-S143: 2017 SJ12

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    M.P.E.C. 2017-S143                               Issued 2017 Sept. 25, 21:23 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 SJ12

Observations:
     K17S12J* C2017 09 22.47546 02 19 56.503-06 21 54.54         20.7 wLES143F51
     K17S12J  C2017 09 22.48785 02 19 59.586-06 23 04.52         20.6 wLES143F51
     K17S12J  C2017 09 22.50031 02 20 02.682-06 24 15.08         20.6 wLES143F51
     K17S12J  C2017 09 22.51274 02 20 05.756-06 25 25.29         20.7 wLES143F51
     K17S12J _C2017 09 23.50108402 24 33.333-08 00 29.63         20.8 GUES143568
     K17S12J _C2017 09 23.50202802 24 33.576-08 00 35.19         20.7 GUES143568
     K17S12J _C2017 09 23.50297102 24 33.820-08 00 40.77         20.8 GUES143568
     K17S12J  C2017 09 24.43905 02 28 55.00 -09 34 24.3          20.7 VqES143I52
     K17S12J  C2017 09 24.44110 02 28 55.56 -09 34 37.4                qES143I52
     K17S12J  C2017 09 24.44234 02 28 55.89 -09 34 45.5                qES143I52
     K17S12J  C2017 09 24.44358 02 28 56.20 -09 34 52.5                qES143I52
     K17S12J  C2017 09 24.48968 02 29 08.62 -09 39 31.7          19.9 RoES143926
     K17S12J  C2017 09 24.49361 02 29 09.65 -09 39 56.3          19.9 RoES143926
     K17S12J  C2017 09 24.49759 02 29 10.74 -09 40 20.9          20.2 RoES143926
     K17S12J  C2017 09 25.41626 02 33 38.79 -11 15 38.3          20.7 VqES143I52
     K17S12J  C2017 09 25.41751 02 33 39.20 -11 15 45.7          20.7 VqES143I52
     K17S12J  C2017 09 25.41875 02 33 39.49 -11 15 53.4          20.7 VqES143I52
     K17S12J  C2017 09 25.42000 02 33 39.88 -11 16 01.3          20.7 VqES143I52

Observer details:
568 Mauna Kea.  Observers R. J. Wainscoat, D. Woodworth.  Measurers M. Micheli,
    R. J. Wainscoat.  3.6-m Canada-France-Hawaii Telescope + CCD.
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.
I52 Steward Observatory, Mt. Lemmon Station.  Observers G. J. Leonard,
    D. C. Fuls.  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 SJ12                                                Earth MOID = 0.1539 AU
Epoch 2017 Sept. 4.0 TT = JDT 2458000.5                 MPC
M 306.14678              (2000.0)            P               Q
n   0.59288217     Peri.  268.22409     +0.13592684     -0.99020633
a   1.4033213      Node   173.69071     +0.98448647     +0.13139995
e   0.3311828      Incl.   16.85492     +0.11095170     +0.04717502
P   1.66           H   22.7           G   0.15           U   8
Residuals in seconds of arc
170922 F51  0.0   0.0     170923 568  0.2-  0.0     170924 926  0.5-  0.2+
170922 F51  0.0   0.1+    170924 I52  0.1+  0.2+    170924 926  0.3-  0.2-
170922 F51  0.1+  0.0     170924 I52  0.3+  0.4-    170925 I52  0.3-  0.3-
170922 F51  0.0   0.1+    170924 I52  0.2+  0.9-    170925 I52  0.6+  0.2+
170923 568  0.3-  0.0     170924 I52  0.1-  0.4-    170925 I52  0.2-  0.3+
170923 568  0.3-  0.0     170924 926  0.0   0.8+    170925 I52  0.4+  0.3+

Ephemeris:
2017 SJ12                a,e,i = 1.40, 0.33, 17                  q = 0.9386
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2017 08 26    00 56 39.8 +15 44 07   0.3861  1.3046   132.9    34.6    22.6
...
2017 09 10    01 34 36.8 +08 08 22   0.2660  1.2283   142.3    30.1    21.6
...
2017 09 18    02 01 34.5 -00 01 17   0.2154  1.1877   145.0    29.0    21.0
...
2017 09 24    02 26 51.3 -08 49 30   0.1865  1.1578   143.1    31.4    20.7
2017 09 25    02 31 36.8 -10 31 28   0.1826  1.1528   142.3    32.1    20.7
2017 09 26    02 36 33.0 -12 17 05   0.1790  1.1479   141.3    33.1    20.7
...
2017 10 02    03 10 22.5 -23 49 19   0.1640  1.1188   132.8    41.0    20.6
...
2017 10 10    04 08 33.7 -39 21 19   0.1618  1.0817   117.0    55.4    20.9
...
2017 10 25    06 29 47.0 -56 28 28   0.1979  1.0194    91.6    77.2    21.9

A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-S143

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