• Processing (Info)

    • MPEC 2017-T02 : 2017 ST20

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    M.P.E.C. 2017-T02                                Issued 2017 Oct. 1, 14:15 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@CFA.HARVARD.EDU
            URL https://www.minorplanetcenter.net/    ISSN 1523-6714

                                   2017 ST20

Observations:
     K17S20T* C2017 09 23.44994 02 54 38.919+14 05 20.87         22.0 wLET002F51
     K17S20T  C2017 09 23.46096 02 54 40.081+14 04 55.80         22.1 wLET002F51
     K17S20T  C2017 09 23.47195 02 54 41.204+14 04 30.50         22.2 wLET002F51
     K17S20T KC2017 09 24.33743402 56 18.12 +13 30 18.8          22.1 VuET002H21
     K17S20T KC2017 09 24.34533702 56 18.94 +13 29 59.7          21.9 VuET002H21
     K17S20T KC2017 09 24.35152402 56 19.56 +13 29 44.7          22.0 VuET002H21
     K17S20T KC2017 09 24.36066902 56 20.51 +13 29 22.8          22.2 VuET002H21
     K17S20T KC2017 09 24.39671 02 56 24.85 +13 27 59.0                oET002291
     K17S20T KC2017 09 24.40418 02 56 25.62 +13 27 41.5          19.8 RoET002291
     K17S20T KC2017 09 24.41167 02 56 26.40 +13 27 23.1          20.2 RoET002291
     K17S20T KC2017 09 26.46948 03 00 13.97 +12 01 09.8          22.8 RoET002291
     K17S20T KC2017 09 26.47417 03 00 14.45 +12 00 57.7          22.6 RoET002291
     K17S20T KC2017 09 26.47888 03 00 14.91 +12 00 44.9          22.5 RoET002291
     K17S20T KC2017 10 01.29656 03 08 50.01 +08 10 39.4          21.2 RoET002291
     K17S20T KC2017 10 01.30302 03 08 50.63 +08 10 19.3                oET002291
     K17S20T KC2017 10 01.30946 03 08 51.22 +08 09 59.1                oET002291
     K17S20T  C2017 10 01.36917 03 08 56.81 +08 06 54.1          21.6 RoET002926
     K17S20T  C2017 10 01.37692 03 08 57.50 +08 06 29.8          21.5 RoET002926
     K17S20T  C2017 10 01.38469 03 08 58.27 +08 06 05.5          21.6 RoET002926

Observer details:
291 LPL/Spacewatch II.  Observers M. T. Read, J. V. Scotti, T. H. Bressi.
    1.8-m f/2.7 reflector + 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.
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes.  1.3-m f/4.0
    astrograph + CCD.

Orbital elements:
2017 ST20                                                Earth MOID = 0.2245 AU
Epoch 2017 Sept. 4.0 TT = JDT 2458000.5                 MPC
M 280.46457              (2000.0)            P               Q
n   0.65664090     Peri.  268.46047     -0.11894580     -0.99209303
a   1.3109439      Node   188.68281     +0.98335526     -0.11212793
e   0.1708261      Incl.   15.38111     +0.13734745     -0.05638040
P   1.50           H   22.6           G   0.15           U   6
Residuals in seconds of arc
170923 F51  0.1-  0.1-    170924 291  0.0   0.2-    171001 291  0.1+  0.0
170923 F51  0.1+  0.1+    170924 291  0.1+  0.2+    171001 291  0.2-  0.2-
170923 F51  0.1-  0.1+    170924 291  0.3+  0.1-    171001 926  0.1+  0.2+
170924 H21  0.0   0.1+    170926 291  0.1-  0.0     171001 926  0.3-  0.0
170924 H21  0.0   0.0     170926 291  0.1+  0.2+    171001 926  0.5+  0.0
170924 H21  0.2-  0.1-    170926 291  0.1-  0.2-
170924 H21  0.1-  0.0     171001 291  0.0   0.1+

Ephemeris:
2017 ST20                a,e,i = 1.31, 0.17, 15                  q = 1.0870
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2017 09 01    02 08 53.8 +22 48 22   0.4772  1.3160   120.3    41.5    23.2
...
2017 09 16    02 40 06.2 +18 10 20   0.3737  1.2772   129.8    37.2    22.5
...
2017 09 24    02 55 39.9 +13 43 58   0.3264  1.2564   135.3    34.2    22.1
...
2017 09 30    03 06 33.6 +09 16 45   0.2958  1.2408   139.3    31.8    21.8
2017 10 01    03 08 18.1 +08 26 14   0.2912  1.2383   139.9    31.4    21.7
2017 10 02    03 10 01.1 +07 33 59   0.2867  1.2357   140.5    31.0    21.7
...
2017 10 08    03 19 47.1 +01 44 56   0.2630  1.2204   143.4    29.2    21.4
...
2017 10 16    03 31 06.8 -07 22 41   0.2405  1.2006   144.3    29.0    21.2
...
2017 10 31    03 46 16.2 -25 43 01   0.2282  1.1657   135.1    36.9    21.2

A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-T02

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