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  • MPEC 2017-X90 : 2017 XD1

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    M.P.E.C. 2017-X90                                Issued 2017 Dec. 11, 01:58 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 XD1
    
    Observations:
         K17X01D* C2017 12 08.27519 03 16 18.278+16 45 03.40         20.9 wUEX090F51
         K17X01D  C2017 12 08.28994 03 16 26.988+16 43 58.05         20.9 wUEX090F51
         K17X01D  C2017 12 08.30462 03 16 35.622+16 42 52.92         20.7 wUEX090F51
         K17X01D  C2017 12 08.31942 03 16 44.311+16 41 46.89         20.6 wUEX090F51
         K17X01D KC2017 12 08.84116 03 22 06.56 +16 02 18.7                UEX090J95
         K17X01D KC2017 12 08.85221 03 22 12.94 +16 01 31.6                UEX090J95
         K17X01D KC2017 12 08.85892 03 22 16.78 +16 01 03.8          20.4 GUEX090J95
         K17X01D  C2017 12 09.18665603 25 28.90 +15 38 18.7          20.5 GUEX090H01
         K17X01D  C2017 12 09.19542103 25 33.62 +15 37 42.1          20.5 GUEX090H01
         K17X01D  C2017 12 09.20072603 25 36.46 +15 37 20.0          20.4 GUEX090H01
         K17X01D  C2017 12 09.20535 03 25 39.36 +15 37 03.6                UEX090I52
         K17X01D  C2017 12 09.20631 03 25 39.90 +15 36 59.2          20.7 GUEX090I52
         K17X01D  C2017 12 09.20727 03 25 40.38 +15 36 55.0          20.3 GUEX090I52
         K17X01D  C2017 12 09.20823 03 25 40.93 +15 36 51.4          19.9 GUEX090I52
         K17X01D  C2017 12 09.20898103 25 40.88 +15 36 45.3          20.5 GUEX090H01
         K17X01D  C2017 12 09.27832 03 26 18.20 +15 31 57.8          21.3 RoEX090926
         K17X01D  C2017 12 09.28170 03 26 20.01 +15 31 44.2          21.0 RoEX090926
         K17X01D  C2017 12 09.28508 03 26 21.81 +15 31 30.7          21.3 RoEX090926
         K17X01D KC2017 12 10.37097 03 36 07.16 +14 19 09.7          20.4 RoEX090291
         K17X01D KC2017 12 10.37529 03 36 09.24 +14 18 52.7          20.6 RoEX090291
    
    Observer details:
    291 LPL/Spacewatch II.  Observer R. A. Mastaler.  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.
    H01 Magdalena Ridge Observatory, Socorro.  Observers W. H. Ryan, E. V. Ryan.
        Measurer W. H. Ryan.  2.4-m f/8.9 reflector + CCD.
    I52 Steward Observatory, Mt. Lemmon Station.  Observer R. G. Matheny.
        Measurers E. J. Christensen, D. C. Fuls, A. R. Gibbs, A. D. Grauer,
        J. A. Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard, R. G. Matheny,
        R. L. Seaman, F. C. Shelly.  1.0-m reflector + CCD.
    J95 Great Shefford.  Observer P. Birtwhistle.  0.40-m f/6.0 Schmidt-Cassegrain
        + CCD.
    
    Orbital elements:
    2017 XD1                                                 Earth MOID = 0.0370 AU
    Epoch 2017 Sept. 4.0 TT = JDT 2458000.5                 MPC
    M 329.47525              (2000.0)            P               Q
    n   0.55592097     Peri.  135.11814     +0.86971552     -0.47755288
    a   1.4648529      Node   253.78368     +0.40852001     +0.83826161
    e   0.3371162      Incl.    7.45902     +0.27695906     +0.26317432
    P   1.77           H   25.2           G   0.15           U   7
    Residuals in seconds of arc
    171208 F51  0.1+  0.0     171209 H01  0.1+  0.0     171209 H01  0.3+  0.1-
    171208 F51  0.0   0.0     171209 H01  0.3+  0.0     171209 926  0.1-  1.0-
    171208 F51  0.0   0.1+    171209 H01  0.3+  0.1+    171209 926  0.1+  0.3-
    171208 F51  0.3+  0.1+    171209 I52  0.0   0.3+    171209 926  0.2+  0.5+
    171208 J95  1.0-  0.4-    171209 I52  0.4+  0.1-    171210 291  0.1+  0.3+
    171208 J95  0.0   0.4-    171209 I52  0.1-  0.3-    171210 291  0.1-  0.2+
    171208 J95  0.3+  0.4+    171209 I52  0.5+  0.1+
    
    Ephemeris:
    2017 XD1                 a,e,i = 1.46, 0.34, 7                   q = 0.9710
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2017 11 11    19 53 32.4 +22 23 43   0.09276 0.9800    81.1    93.5    23.3
    ...
    2017 11 26    23 22 02.0 +31 45 00   0.05200 1.0111   116.4    61.0    21.0
    ...
    2017 12 04    02 18 50.7 +22 53 39   0.05882 1.0356   147.2    31.0    20.5
    ...
    2017 12 10    03 32 57.9 +14 43 49   0.07818 1.0569   156.3    22.0    20.8
    2017 12 11    03 41 23.5 +13 41 03   0.08213 1.0606   156.7    21.5    20.9
    2017 12 12    03 49 01.2 +12 43 39   0.08624 1.0645   156.9    21.3    21.1
    ...
    2017 12 18    04 22 40.1 +08 33 25   0.1136  1.0886   155.8    21.8    21.7
    ...
    2017 12 26    04 49 17.6 +05 48 11   0.1554  1.1234   152.3    24.0    22.5
    ...
    2018 01 10    05 18 41.3 +04 39 45   0.2474  1.1946   145.0    28.2    23.8
    
    A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-X90
    

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