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    • MPEC 2015-S42 : 2015 RY83

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    M.P.E.C. 2015-S42                                Issued 2015 Sept. 18, 14:21 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 RY83

Observations:
     K15R83Y* C2015 09 15.32828 00 21 34.23 -15 28 25.7          20.1 rRES042G45
     K15R83Y  C2015 09 15.33320 00 21 36.98 -15 28 36.9          19.9 rRES042G45
     K15R83Y  C2015 09 15.33829 00 21 39.80 -15 28 48.6          20.4 rRES042G45
     K15R83Y  C2015 09 15.34270 00 21 42.29 -15 28 59.0          20.0 rRES042G45
     K15R83Y KC2015 09 16.48495 00 32 45.08 -16 10 51.9          19.4 RoES042291
     K15R83Y KC2015 09 16.48602 00 32 45.66 -16 10 53.9          19.8 RoES042291
     K15R83Y KC2015 09 16.48711 00 32 46.26 -16 10 56.0          19.9 RoES042291
     K15R83Y KC2015 09 18.06762 00 47 23.09 -16 59 24.8          20.7 VqES042821
     K15R83Y KC2015 09 18.07541 00 47 27.01 -16 59 39.2          20.8 VqES042821
     K15R83Y KC2015 09 18.08321 00 47 30.97 -16 59 53.0          20.5 VqES042821

Observer details:
291 LPL/Spacewatch II.  Observer T. H. Bressi.  1.8-m f/2.7 reflector + CCD.
821 Cordoba-Bosque Alegre.  Observer R. Melia.  1.54-m f/4.8 reflector + CCD.
G45 Space Surveillance Telescope, Atom Site.  Observers L. Banks, M. Blythe,
    R. Brungard, P. Festler, T. McVey, J. Paige, W. Robertson, G. Spitz.
    Measurers C. Byun, M. Cornell, M. Goldberg, A. Klein, J. Ruprecht,
    G. Ushomirsky, J. Varey, H. Viggh, D. Woods.  3.5-m f/1 reflector + CCD.

Orbital elements:
2015 RY83                                                Earth MOID = 0.0771 AU
Epoch 2015 June 27.0 TT = JDT 2457200.5                 MPC
M 336.73519              (2000.0)            P               Q
n   0.31073899     Peri.  183.32378     +0.97302101     +0.22743438
a   2.1587659      Node   163.37503     -0.20842965     +0.93859369
e   0.4978816      Incl.    7.78963     -0.09893024     +0.25945228
P   3.17           H   24.6           G   0.15           U   7
Residuals in seconds of arc
150915 G45  0.2+  0.3-    150916 291  0.0   0.1-    150918 821  0.2-  0.2-
150915 G45  0.1+  0.0     150916 291  0.0   0.0     150918 821  0.1+  0.5+
150915 G45  0.3-  0.2+    150916 291  0.0   0.1+
150915 G45  0.0   0.1+    150918 821  0.1+  0.3-

Ephemeris:
2015 RY83                a,e,i = 2.16, 0.50, 8                   q = 1.0840
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2015 08 19    20 16 05.0 +06 53 16   0.1159  1.1133   149.1    27.8    21.4
...
2015 09 03    22 05 33.1 -03 47 40   0.07931 1.0869   169.2    10.1    19.9
...
2015 09 11    23 35 14.9 -12 02 29   0.07791 1.0840   171.2     8.2    19.8
...
2015 09 17    00 37 39.1 -16 27 04   0.08681 1.0871   159.5    18.9    20.4
2015 09 18    00 46 42.1 -16 58 01   0.08898 1.0880   157.9    20.3    20.5
2015 09 19    00 55 18.2 -17 25 27   0.09132 1.0891   156.4    21.6    20.6
...
2015 09 25    01 37 39.1 -19 08 39   0.1082  1.0981   149.9    27.2    21.2
...
2015 10 03    02 13 19.3 -19 39 53   0.1361  1.1165   146.2    29.9    21.8
...
2015 10 18    02 42 08.5 -18 10 24   0.1996  1.1692   147.1    27.6    22.7

A. U. Tomatic                (C) Copyright 2015 MPC           M.P.E.C. 2015-S42

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