[Iaude] MPEC S88: 2012 JU4 [a=1.79,e=0.28,i=17.1,H=20.9]

mpec at mpcdb1.cfa.harvard.edu mpec at mpcdb1.cfa.harvard.edu
Wed Sep 20 10:33:19 EDT 2017


M.P.E.C. 2017-S88                                Issued 2017 Sept. 20, 14:29 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 http://www.minorplanetcenter.net/    ISSN 1523-6714


                                   2012 JU4
 
                           Revision to MPEC 2012-J48
 
Additional Observations:
     K12J04U KC2017 09 18.92599100 10 11.537+33 12 39.53         21.7 GUES088J04
     K12J04U KC2017 09 18.93590400 10 11.001+33 12 25.82         22.4 GUES088J04
     K12J04U KC2017 09 18.94581800 10 10.454+33 12 13.18         21.3 GUES088J04
     K12J04U KC2017 09 19.91993800 09 20.115+32 50 02.43         20.9 GUES088J04
     K12J04U KC2017 09 19.92985100 09 19.565+32 49 49.09         22.1 GUES088J04
     K12J04U KC2017 09 19.93976500 09 18.972+32 49 35.88         22.0 GUES088J04
 
Observer details:
J04 ESA Optical Ground Station, Tenerife.  Observer D. Abreu.  Measurers
    M. Micheli, D. Koschny, A. Knoefel, M. Busch, E. Schwab.  1.0-m f/4.4
    reflector + CCD.
 
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
170918 J04 0.08- 0.00-    170919 J04 0.08- 0.00-    MPO234432   +0.060 day
 
Orbital elements:
2012 JU4                                                 Earth MOID = 0.3666 AU
Epoch 2017 Sept. 4.0 TT = JDT 2458000.5                 MPC
M  42.23163              (2000.0)            P               Q
n   0.41075316     Peri.   60.31881     +0.22361092     +0.95297330
a   1.7923195      Node   224.17527     -0.96453880     +0.18616439
e   0.2755794      Incl.   17.06944     -0.14022504     +0.23913323
P   2.40           H   20.9           G   0.15           U   3
Residuals in seconds of arc
120428 G96  0.1-  0.1-    120513 G96  0.4-  0.1-    120527 G96  0.1-  0.4-
120428 G96  0.3-  0.1-    120514 291  0.3+  0.1+    120527 G96  0.3+  0.5-
120428 G96  0.0   0.8-    120514 291  0.1+  0.2+    120527 G96  0.0   0.3+
120428 G96  0.2+  0.1-    120514 291  0.1+  0.2-    120615 291  0.4-  0.5-
120513 G96  0.3-  0.3-    120514 033  0.5-  0.8+    120615 291  0.2+  0.4+
120513 G96  0.2-  0.0     120514 033  0.9+  0.4-    120615 291  0.4+  0.1+
120513 G96  0.0   0.2-    120517 G96  0.1-  0.2+    170918 J04  0.2-  0.4+
120513 G96  0.1+  0.4-    120517 G96  0.1+  0.4-    170918 J04  0.0   0.3-
120513 G96  0.6+  0.7+    120517 G96  0.6-  0.3-    170918 J04  0.2+  0.1+
120513 G96  0.1+  0.4-    120517 G96  0.2+  0.6+    170919 J04  0.1+  0.3-
120513 291  0.0   0.2+    120527 H21  1.2-  0.0     170919 J04  0.2+  0.2-
120513 G96  0.4-  0.1+    120527 H21  1.2-  0.4-    170919 J04  0.3-  0.0
120513 291  0.3+  0.1+    120527 G96  0.1+  0.1-
120513 291  0.0   0.1+    120527 H21  0.7-  0.2+

Ephemeris:
2012 JU4                 a,e,i = 1.79, 0.28, 17                  q = 1.2984
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2017 08 21    00 25 17.3 +38 43 44   0.6764  1.4635   118.9    37.3    22.4
...
2017 09 05    00 20 48.9 +37 12 01   0.6437  1.5138   131.6    29.9    22.1
...
2017 09 13    00 15 08.9 +35 12 45   0.6336  1.5419   139.1    25.3    22.0
...
2017 09 19    00 10 07.0 +33 11 02   0.6315  1.5633   144.7    21.8    21.9
2017 09 20    00 09 15.3 +32 48 14   0.6316  1.5669   145.7    21.2    21.9
2017 09 21    00 08 23.5 +32 24 46   0.6320  1.5706   146.6    20.6    21.9
...
2017 09 27    00 03 20.8 +29 51 36   0.6377  1.5923   151.6    17.4    21.9
...
2017 10 05    23 57 33.9 +26 03 36   0.6563  1.6216   156.0    14.5    21.9
...
2017 10 20    23 51 53.5 +18 45 20   0.7279  1.6768   152.9    15.7    22.2

A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-S88




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