[Iaude] MPEC Y38: 2017 XQ60 [a=1.00,e=0.21,i=27.2,H=24.4]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Sat Dec 21 01:22:02 EST 2019


M.P.E.C. 2019-Y38                             Issued 2019 December 21, 06:19 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 at CFA.HARVARD.EDU
            URL https://www.minorplanetcenter.net/    ISSN 1523-6714

                                   2017 XQ60                                    


                           Revision to MPEC 2017-X142                           

Additional Observations:
     K17X60Q  C2019 12 19.37899 09 16 37.12 +29 47 02.7          18.4 GVEY038703
     K17X60Q  C2019 12 19.38449 09 16 33.84 +29 43 42.7          19.4 GVEY038703
     K17X60Q  C2019 12 19.39001 09 16 30.44 +29 40 24.1          18.9 GVEY038703
     K17X60Q  C2019 12 19.39551 09 16 27.08 +29 37 04.6                VEY038703
     K17X60Q  C2019 12 19.61049209 14 24.43 +27 22 08.4          19.31oVEY038T05
     K17X60Q  C2019 12 19.61659809 14 20.55 +27 18 09.6          19.35oVEY038T05
     K17X60Q  C2019 12 19.62817809 14 13.07 +27 10 31.0          19.48oVEY038T05
     K17X60Q  C2019 12 19.63339709 14 09.66 +27 07 03.8          19.17oVEY038T05
     K17X60Q  C2019 12 19.88670 09 12 08.80 +24 08 41.9          18.3 VVEY038033
     K17X60Q  C2019 12 19.88714 09 12 08.55 +24 08 22.9          18.4 VVEY038033
     K17X60Q  C2019 12 20.07741 09 10 09.96 +21 47 06.9          18.7 VVEY038033
     K17X60Q  C2019 12 20.07786 09 10 09.67 +21 46 46.4          18.8 VVEY038033
     K17X60Q  C2019 12 20.07830 09 10 09.37 +21 46 25.6          18.8 VVEY038033
     K17X60Q  C2019 12 20.07875 09 10 09.08 +21 46 05.2          18.8 VVEY038033
     K17X60Q  C2019 12 20.07919 09 10 08.79 +21 45 44.7          18.7 VVEY038033
     K17X60Q  C2019 12 20.13798 09 09 29.86 +20 59 53.9          18.4 VVEY038033
     K17X60Q  C2019 12 20.13836 09 09 29.62 +20 59 35.6          18.1 VVEY038033
     K17X60Q  C2019 12 20.13931 09 09 28.97 +20 58 50.3          18.2 VVEY038033
     K17X60Q  C2019 12 20.13970 09 09 28.70 +20 58 32.1          18.1 VVEY038033
     K17X60Q  C2019 12 20.27206 09 08 28.01 +19 12 37.7          18.2 GVEY038I52
     K17X60Q  C2019 12 20.27218 09 08 27.95 +19 12 31.2          18.3 GVEY038I52
     K17X60Q  C2019 12 20.27231 09 08 27.82 +19 12 25.2          18.7 GVEY038I52
     K17X60Q  C2019 12 20.27244 09 08 27.75 +19 12 18.4          18.5 GVEY038I52
     K17X60Q KC2019 12 20.28856909 08 11.55 +18 58 56.1          18.5 VuEY038H21
     K17X60Q KC2019 12 20.29008309 08 10.50 +18 57 41.2          18.7 VuEY038H21
     K17X60Q KC2019 12 20.29159709 08 09.47 +18 56 26.4          18.5 VuEY038H21
     K17X60Q KC2019 12 20.29311109 08 08.44 +18 55 11.3          18.6 VuEY038H21
     K17X60Q KC2019 12 20.29487809 08 07.23 +18 53 43.7          18.7 VuEY038H21
     K17X60Q KC2019 12 20.29629309 08 06.27 +18 52 33.6          18.7 VuEY038H21
     K17X60Q KC2019 12 20.36088209 07 27.75 +17 58 56.9                VEY038V11
     K17X60Q KC2019 12 20.36680009 07 23.53 +17 53 57.2          18.7 GVEY038V11
     K17X60Q KC2019 12 20.36896609 07 22.03 +17 52 08.4          18.4 GVEY038V11
     K17X60Q KC2019 12 20.41960 09 06 43.75 +17 09 00.4                oEY038711
     K17X60Q KC2019 12 20.42123 09 06 42.58 +17 07 37.2                oEY038711
     K17X60Q KC2019 12 20.42284 09 06 41.41 +17 06 13.1                oEY038711
     K17X60Q  C2019 12 20.42627 09 06 40.96 +17 03 05.5          18.5 GVEY038G96
     K17X60Q KC2019 12 20.42771 09 06 37.89 +17 02 00.2                oEY038711
     K17X60Q KC2019 12 20.42931 09 06 36.73 +17 00 37.5                oEY038711
     K17X60Q KC2019 12 20.43092 09 06 35.54 +16 59 13.8                oEY038711
     K17X60Q  C2019 12 20.43142 09 06 37.21 +16 58 36.9          18.5 GVEY038G96
     K17X60Q  C2019 12 20.44172 09 06 29.79 +16 49 42.1          19.0 GVEY038G96
     K17X60Q KC2019 12 21.01472609 00 26.29 +07 45 06.7          18.2 GVEY038Z99
     K17X60Q KC2019 12 21.01668409 00 24.85 +07 43 08.2          18.3 GVEY038Z99
     K17X60Q KC2019 12 21.01861609 00 23.50 +07 41 09.5          18.5 GVEY038Z99

Observer details:
033 Karl Schwarzschild Observatory, Tautenburg.  Observers S. Melnikov, C. 
   Hoegner, B. Stecklum.  Measurer B. Stecklum.  1.34-m f/3 Schmidt + CCD.
703 Catalina Sky Survey.  Observer R. A. Kowalski.  Measurers E. J. Christensen,
    G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, R. A. 
   Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D. Rankin, R. L. Seaman,
    F. C. Shelly, K. W. Wierzchos.  0.68-m Schmidt + 10K CCD.
711 McDonald Observatory, Fort Davis.  Observer J. G. Ries.  2.1-m reflector + 
   CCD + focal reducer.
G96 Mt. Lemmon Survey.  Observer G. J. Leonard.  Measurers E. J. Christensen, 
   G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, R. A. 
   Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D. Rankin, R. L. Seaman,
    F. C. Shelly, K. W. Wierzchos.  1.5-m reflector + 10K 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.
I52 Steward Observatory, Mt. Lemmon Station.  Observer T. A. Pruyne.  Measurers 
   E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. 
   Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D. 
   Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos.  1.0-m reflector + CCD.
T05 ATLAS-HKO, Haleakala.  Observers L. Denneau, J. Tonry, A. Heinze, H. 
   Weiland, H. Flewelling.  Measurers L. Denneau, J. Tonry, A. Heinze, H. 
   Weiland, H. Flewelling, B. Stalder, A. Fitzsimmons, J. Robinson, N. Erasmus. 
    0.5-m reflector + CCD.
V11 Saguaro Observatory, Tucson.  Observer D. Rankin.  0.30-m reflector + CCD.
Z99 Clixby Observatory, Cleethorpes.  Observer A. Mickleburgh.  0.36-m f/8 
   Schmidt-Cassegrain + CCD.

First and last observations above in comparison with prediction:
Residuals in seconds of arc (or zero decimals in degrees), reference and Delta-T
191219 703    7-   10-    191221 Z99   10-    9-    MPO431401   -0.48 days

Orbital elements:
2017 XQ60                                                Earth MOID = 0.0192 AU
Epoch 2020 May 31.0 TT = JDT 2459000.5                  Bell
M  81.19314              (2000.0)            P               Q
n   0.98608773     Peri.  283.72793     -0.86727510     +0.19747352
a   0.9996754      Node   269.19886     -0.03001982     -0.93703610
e   0.2144323      Incl.   27.19580     -0.49692324     -0.28804090
P   1.00           H   24.4           G   0.15           U   4
Residuals in seconds of arc
171213 F51  0.1+  0.2+    171220 G96  0.3-  0.6-    191220 I52  0.6+  0.1-
171213 F51  0.1-  0.0     171220 G96  0.4-  0.5-    191220 I52  0.0   0.2+
171213 F51  0.2-  0.2+    171220 926  0.1+  0.1+    191220 I52  0.2+  0.2-
171213 F51  0.2+  0.1+    171220 926  0.4+  0.1+    191220 H21  0.2+  0.3+
171214 926  0.3+  0.2-    171220 926  0.0   0.2-    191220 H21  0.0   0.2+
171214 926  0.2+  0.6+    191219 703  0.9-  0.9+    191220 H21  0.1+  0.3+
171214 926  0.5+  0.3-    191219 703  0.1-  1.0-    191220 H21  0.2+  0.2+
171214 I52  0.2-  0.8-    191219 703  0.5-  0.2-    191220 H21  0.3+  0.1+
171214 I52  0.0   0.7-    191219 703  0.5-  0.5-    191220 H21  0.4+  0.1+
171214 I52  0.1+  0.6-    191219 T05 (0.5-  1.8-)   191220 V11  0.0   0.7-
171214 I52  0.1+  0.8-    191219 T05  0.5+  1.0+    191220 V11  0.7-  0.5-
171214 033  0.2+  0.1+    191219 T05 (0.6+  2.5+)   191220 V11  0.3-  0.6+
171214 033  0.2-  0.5-    191219 T05 (0.1+  3.4+)   191220 711  0.2-  0.2-
171214 033  0.1+  0.3-    191219 033  0.5-  1.2-    191220 711  0.0   1.1+
171214 033  0.2+  0.2-    191219 033  0.4-  1.3-    191220 711  0.0   0.5+
171215 I52  0.1+  0.3+    191220 033  0.2-  0.6-    191220 G96  0.0   0.1-
171215 I52  0.2-  0.2+    191220 033  0.1-  0.3-    191220 711  0.3+  0.4+
171215 I52  0.1-  0.5+    191220 033  0.2-  0.7-    191220 711  0.4+  0.9+
171215 926  0.0   0.3+    191220 033  0.1-  0.3-    191220 711  0.1+  0.9+
171215 926  0.1-  0.0     191220 033  0.1-  0.4-    191220 G96  0.2-  1.2-
171215 926  0.1-  0.1+    191220 033  0.1+  0.8+    191220 G96  0.6+  0.4+
171219 926  0.1+  0.4-    191220 033  0.3+  0.5+    191221 Z99  0.6-  1.3-
171219 926  0.0   0.1+    191220 033  0.0   0.2+    191221 Z99  0.4-  0.2+
171219 926  0.2+  0.2+    191220 033  0.1-  0.5+    191221 Z99  0.9+  0.1-
171220 G96  0.4-  0.9+    191220 I52  0.4+  0.5+

Ephemeris:
2017 XQ60                a,e,i = 1.00, 0.21, 27                  q = 0.7853
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2019 11 21    09 54 56.3 +68 46 55   0.2782  1.1032   107.3    58.8    23.9
...
2019 12 06    10 03 43.2 +64 10 42   0.1477  1.0558   114.8    57.9    22.5
...
2019 12 14    09 47 35.6 +55 25 16   0.07799 1.0281   122.3    54.1    20.9
...
2019 12 20    09 10 52.9 +22 48 51   0.03226 1.0065   133.9    44.8    18.7
2019 12 21    09 00 28.5 +08 04 51   0.02772 1.0028   132.7    46.1    18.4
2019 12 22    08 48 05.2 -10 34 31   0.02566 0.9991   126.3    52.5    18.4
...
2019 12 28    06 21 17.8 -74 56 39   0.05812 0.9768    81.7    94.9    21.6
...
2020 01 05    01 44 13.3 -80 09 24   0.1256  0.9466    69.5   103.4    23.6
...
2020 01 20    23 26 20.5 -76 18 26   0.2517  0.8911    61.4   104.3    25.0

A. U. Tomatic                (C) Copyright 2019 MPC           M.P.E.C. 2019-Y38




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