• MPC Preparation (Info)

    • MPEC 2018-O31 : 2018 OR

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    M.P.E.C. 2018-O31                                Issued 2018 July 21, 00:31 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

                                    2018 OR

Observations:
     K18O00R  C2018 07 13.56840923 42 51.682+01 56 03.34         21.3 GVEO031F51
     K18O00R  C2018 07 13.57893223 42 52.673+01 56 10.70         21.2 GVEO031F51
     K18O00R  C2018 07 13.58949823 42 53.672+01 56 18.50         21.3 GVEO031F51
     K18O00R  C2018 07 13.60008023 42 54.668+01 56 26.15         21.4 GVEO031F51
     K18O00R* C2018 07 19.56366 23 52 18.662+03 06 43.53         21.7 wUEO031F52
     K18O00R  C2018 07 19.57488 23 52 19.639+03 06 51.34         21.8 wUEO031F52
     K18O00R  C2018 07 19.58616 23 52 20.648+03 06 59.07         21.6 wUEO031F52
     K18O00R KC2018 07 20.03967123 53 02.15 +03 12 05.2          21.4 GVEO031L01
     K18O00R KC2018 07 20.06632123 53 04.56 +03 12 23.6          21.1 GVEO031L01
     K18O00R KC2018 07 20.06959723 53 04.85 +03 12 25.5          21.2 GVEO031L01
     K18O00R KC2018 07 20.07286623 53 05.09 +03 12 29.0          21.0 GVEO031L01
     K18O00R KC2018 07 20.40453 23 53 35.32 +03 16 15.7          20.9 RoEO031291
     K18O00R KC2018 07 20.40829 23 53 35.65 +03 16 18.1          20.8 RoEO031291
     K18O00R KC2018 07 20.41204 23 53 35.98 +03 16 20.8          20.6 RoEO031291
     K18O00R ^C2018 07 20.58391123 53 51.416+03 18 19.26         21.29GVEO031568
     K18O00R ^C2018 07 20.58485923 53 51.495+03 18 19.89         21.18GVEO031568
     K18O00R ^C2018 07 20.58581623 53 51.581+03 18 20.57         21.37GVEO031568
     K18O00R ^C2018 07 20.58791123 53 51.760+03 18 21.95         21.23GVEO031568
     K18O00R ^C2018 07 20.58885823 53 51.844+03 18 22.62         21.32GVEO031568
     K18O00R ^C2018 07 20.59476223 53 52.355+03 18 26.62         21.30GVEO031568
     K18O00R ^C2018 07 20.59570523 53 52.440+03 18 27.29         21.32GVEO031568
     K18O00R ^C2018 07 20.59665423 53 52.519+03 18 27.89         21.37GVEO031568

Observer details:
291 LPL/Spacewatch II.  Observer R. S. McMillan.  1.8-m f/2.7 reflector + CCD.
568 Mauna Kea.  Observers R. Wainscoat, L. Wells, T. Burdullis.  Measurers
    R. Weryk, R. Wainscoat.  3.6-m Canada-France-Hawaii Telescope + 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. Magnier, Y. Ramanjooloo, R. Wainscoat, R. Weryk.  1.8-m
    Ritchey-Chretien + CCD.
F52 Pan-STARRS 2, Haleakala.  Observers J. Bulger, T. Dukes, T. Lowe,
    A. Schultz, M. Willman.  Measurers K. Chambers, S. Chastel, L. Denneau,
    H. Flewelling, M. Huber, E. Magnier, Y. Ramanjooloo, R. Wainscoat,
    C. Waters, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
L01 Visnjan Observatory, Tican.  Observer K. Korlevic.  1.0-m f/2.9 reflector
    + CCD.

Orbital elements:
2018 OR
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5                 MPC
M 347.22933              (2000.0)            P               Q
n   0.08759587     Peri.  107.48143     +0.95710540     +0.28813568
a   5.0212708      Node   235.78228     -0.27784141     +0.88291252
e   0.6619598      Incl.    2.11021     -0.08217913     +0.37073347
P  11.25           H   19.0           G   0.15           U   8
Residuals in seconds of arc
180713 F51  0.1-  0.2+    180720 L01  0.3+  0.3-    180720 568  0.5+  0.3+
180713 F51  0.1-  0.1-    180720 L01  0.3+  0.6-    180720 568  0.4+  0.2+
180713 F51  0.0   0.0     180720 L01  0.4-  0.7+    180720 568  0.5+  0.2+
180713 F51  0.0   0.1-    180720 291  0.1+  0.1+    180720 568  0.4+  0.2+
180719 F52  0.4+  0.1+    180720 291  0.1+  0.0     180720 568  0.5+  0.3+
180719 F52  0.2+  0.2+    180720 291  0.1+  0.1+    180720 568  0.4+  0.2+
180719 F52  0.4+  0.2+    180720 568  0.5+  0.2+
180720 L01  0.4-  0.5-    180720 568  0.4+  0.2+

Ephemeris:
2018 OR                  a,e,i = 5.02, 0.66, 2                   q = 1.6974
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2018 06 21    23 03 02.8 -02 55 23   1.2646  1.7986   103.6    33.3    22.2
...
2018 07 06    23 30 09.0 +00 21 41   1.1174  1.7526   110.3    33.0    21.8
...
2018 07 14    23 43 33.4 +02 01 19   1.0478  1.7334   114.2    32.3    21.7
...
2018 07 20    23 52 58.3 +03 11 44   0.9998  1.7215   117.3    31.6    21.5
2018 07 21    23 54 28.8 +03 23 02   0.9921  1.7198   117.8    31.5    21.5
2018 07 22    23 55 58.2 +03 34 12   0.9846  1.7181   118.4    31.4    21.5
...
2018 07 28    00 04 30.3 +04 38 08   0.9414  1.7093   121.7    30.4    21.3
...
2018 08 05    00 14 39.0 +05 53 54   0.8898  1.7013   126.5    28.6    21.2
...
2018 08 20    00 29 01.3 +07 39 02   0.8122  1.6979   136.8    24.1    20.8

A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-O31

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