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    • MPEC 2015-W42 : 2015 WT1

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    M.P.E.C. 2015-W42                                Issued 2015 Nov. 21, 14:22 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

                                   2015 WT1

Observations:
     K15W01T* C2015 11 18.31019 02 47 34.879+10 38 51.60         20.8 rLEW042F51
     K15W01T  C2015 11 18.32052 02 47 34.161+10 38 30.84         20.7 rLEW042F51
     K15W01T  C2015 11 18.33093 02 47 33.457+10 38 09.61         20.5 rLEW042F51
     K15W01T IC2015 11 19.16624 02 46 39.27 +10 09 49.4                oEW042711
     K15W01T KC2015 11 19.16961 02 46 38.99 +10 09 41.8                oEW042711
     K15W01T KC2015 11 19.17345 02 46 38.74 +10 09 34.5                oEW042711
     K15W01T KC2015 11 19.25054 02 46 33.48 +10 06 57.5                oEW042291
     K15W01T KC2015 11 19.25279 02 46 33.37 +10 06 52.6                oEW042291
     K15W01T KC2015 11 19.25502 02 46 33.19 +10 06 47.9                oEW042291
     K15W01T KC2015 11 20.08710 02 45 40.15 +09 38 27.5                oEW042291
     K15W01T KC2015 11 20.08900 02 45 39.98 +09 38 23.3                oEW042291
     K15W01T KC2015 11 20.09091 02 45 39.94 +09 38 20.6                oEW042291
     K15W01T KC2015 11 20.15991 02 45 35.23 +09 36 00.9                oEW042711
     K15W01T KC2015 11 20.16358 02 45 34.98 +09 35 53.4                oEW042711
     K15W01T KC2015 11 20.16719 02 45 34.63 +09 35 45.8                oEW042711
     K15W01T KC2015 11 21.19616 02 44 29.12 +09 00 40.7                oEW042711
     K15W01T KC2015 11 21.19976 02 44 28.89 +09 00 33.3                oEW042711
     K15W01T KC2015 11 21.20348 02 44 28.62 +09 00 25.7                oEW042711
     K15W01T KC2015 11 21.38090 02 44 16.80 +08 54 20.5          21.5 RoEW042291
     K15W01T KC2015 11 21.38278 02 44 16.68 +08 54 16.6          21.0 RoEW042291
     K15W01T KC2015 11 21.38464 02 44 16.58 +08 54 13.3          21.2 RoEW042291

Observer details:
291 LPL/Spacewatch II.  Observers M. T. Read, A. F. Tubbiolo.  1.8-m f/2.7
    reflector + CCD.
711 McDonald Observatory.  Observer J. G. Ries.  2.1-m reflector + CCD + focal
    reducer.
F51 Pan-STARRS 1, Haleakala.  Observers B. Gibson, T. Goggia, N. Primak,
    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.

Orbital elements:
2015 WT1                                                 Earth MOID = 0.5127 AU
Epoch 2016 Jan. 13.0 TT = JDT 2457400.5                 MPC
M 345.73654              (2000.0)            P               Q
n   0.23731459     Peri.  265.15532     -0.57716025     -0.75582477
a   2.5837654      Node   225.22049     +0.80729919     -0.58515978
e   0.5197146      Incl.   25.82509     -0.12310183     -0.29379746
P   4.15           H   19.7           G   0.15           U   8
Residuals in seconds of arc
151118 F51  0.0   0.2-    151119 291  0.4+  0.4+    151120 711  1.6-  0.2+
151118 F51  0.0   0.1-    151119 291  0.0   0.2+    151121 711  0.2+  0.7+
151118 F51  0.3+  0.2-    151120 291  0.2-  0.9-    151121 711  0.3+  0.6+
151119 711  0.8+  0.7+    151120 291  0.9-  1.2-    151121 711  0.1+  0.6+
151119 711  0.1+  0.0     151120 291  0.4+  0.0     151121 291  0.1+  0.4-
151119 711  0.3+  0.5+    151120 711  0.0   0.4+    151121 291  0.2+  0.5-
151119 291  0.3-  0.7+    151120 711  0.0   0.4+    151121 291  0.5+  0.0

Ephemeris:
2015 WT1                 a,e,i = 2.58, 0.52, 26                  q = 1.2409
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2015 10 22    03 13 13.7 +23 19 42   0.9550  1.9055   155.4    12.6    21.7
...
2015 11 06    03 00 52.2 +17 11 34   0.8180  1.8079   175.3     2.6    20.8
...
2015 11 14    02 52 18.3 +13 02 43   0.7702  1.7562   172.7     4.1    20.7
...
2015 11 20    02 45 45.2 +09 41 33   0.7465  1.7177   163.8     9.3    20.9
2015 11 21    02 44 41.4 +09 07 28   0.7435  1.7113   162.3    10.1    20.9
2015 11 22    02 43 38.4 +08 33 19   0.7409  1.7049   160.8    11.0    20.9
...
2015 11 28    02 37 45.1 +05 09 35   0.7304  1.6669   151.9    16.2    21.0
...
2015 12 06    02 31 29.2 +00 51 37   0.7300  1.6170   140.5    22.8    21.1
...
2015 12 21    02 26 53.4 -05 44 43   0.7599  1.5270   121.7    33.2    21.4

A. U. Tomatic                (C) Copyright 2015 MPC           M.P.E.C. 2015-W42

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