• Processing (Info)

    • MPEC 2017-P04 : 2017 OB20

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    M.P.E.C. 2017-P04                                Issued 2017 Aug. 1, 14:07 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 OB20

Observations:
     K17O20B* C2017 07 25.56648 23 46 48.217-15 10 39.05         21.1 wLEP004F51
     K17O20B  C2017 07 25.57765 23 46 54.025-15 08 55.61         21.2 wLEP004F51
     K17O20B  C2017 07 25.59996 23 47 05.592-15 05 28.54         21.0 wLEP004F51
     K17O20B _C2017 07 26.50838323 56 17.502-12 43 57.98         20.7 GUEP004568
     K17O20B _C2017 07 26.50936123 56 18.005-12 43 49.22         20.5 GUEP004568
     K17O20B _C2017 07 26.51033323 56 18.502-12 43 39.97         20.6 GUEP004568
     K17O20B KC2017 07 31.35922400 40 21.18 -00 20 27.6          20.7 VuEP004H21
     K17O20B KC2017 07 31.36927700 40 25.55 -00 18 59.7          21.1 VuEP004H21
     K17O20B KC2017 07 31.37778400 40 29.23 -00 17 45.3          21.3 VuEP004H21

Observer details:
568 Mauna Kea.  Observers R. J. Wainscoat, D. Woodworth.  Measurers M. Micheli,
    R. Weryk.  3.6-m Canada-France-Hawaii Telescope + CCD.
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, T. Lowe, A. Schultz,
    M. Willman, T. Goggia.  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.  0.76-m f/3.0
    astrograph + CCD.

Orbital elements:
2017 OB20                                                Earth MOID = 0.0177 AU
Epoch 2017 Sept. 4.0 TT = JDT 2458000.5                 MPC
M  12.64454              (2000.0)            P               Q
n   0.63682612     Peri.   12.16860     +0.82442047     +0.56468726
a   1.3379980      Node   313.38262     -0.52358195     +0.73529661
e   0.2309025      Incl.    3.01282     -0.21492517     +0.37478953
P   1.55           H   25.9           G   0.15           U   5
Residuals in seconds of arc
170725 F51  0.2-  0.0     170726 568  0.0   0.1+    170731 H21  0.3-  0.3-
170725 F51  0.0   0.0     170726 568  0.0   0.2-    170731 H21  0.0   0.0
170725 F51  0.0   0.1-    170726 568  0.0   0.0     170731 H21  0.1+  0.2+

Ephemeris:
2017 OB20                a,e,i = 1.34, 0.23, 3                   q = 1.0291
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2017 07 02    20 07 27.9 -43 36 56   0.07889 1.0877   153.2    24.9    21.7
...
2017 07 17    22 15 07.9 -33 23 56   0.04762 1.0556   144.8    33.7    20.8
...
2017 07 25    23 41 00.3 -16 35 40   0.04067 1.0432   131.6    46.7    20.8
...
2017 07 31    00 37 17.3 -01 10 52   0.04187 1.0364   119.5    58.4    21.2
2017 08 01    00 45 31.4 +01 13 39   0.04257 1.0355   117.7    60.2    21.3
2017 08 02    00 53 24.8 +03 32 35   0.04340 1.0346   116.0    61.9    21.4
...
2017 08 08    01 33 52.3 +15 10 09   0.05038 1.0307   108.1    69.3    21.9
...
2017 08 16    02 12 21.5 +25 11 15   0.06288 1.0291   103.4    73.2    22.5
...
2017 08 31    02 52 37.8 +34 29 25   0.08859 1.0371   105.8    69.5    23.2

A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-P04

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