• MPC Preparation (Info)

  • MPEC 2018-K70 : 2017 EH1

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    Read MPEC 2018-K69 Read MPEC 2018-K71


    M.P.E.C. 2018-K70                                Issued 2018 May 23, 02:05 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 EH1
    
                               Revision to MPEC 2017-E54
    
    Additional Observations:
         K17E01H  C2018 05 17.61882219 41 42.734+02 32 53.53         21.67GVEK070T12
         K17E01H  C2018 05 17.62126619 41 43.279+02 33 01.47         21.50GVEK070T12
         K17E01H  C2018 05 22.60310320 04 58.281+07 50 22.89         21.37GVEK070T12
         K17E01H  C2018 05 22.60417420 04 58.608+07 50 27.64         21.67GVEK070T12
    
    Observer details:
    T12 Mauna Kea-UH/Tholen NEO Follow-Up (2.24-m).  Observers D. J. Tholen,
        D. Fohring.  Measurer D. J. Tholen.  2.24-m f/10.1 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
    180517 T12 0.14+ 0.02-    180522 T12 0.17+ 0.03-    MPO409594   -0.018 day
    
    Orbital elements:
    2017 EH1                                                 Earth MOID = 0.0305 AU
    Epoch 2018 Mar. 23.0 TT = JDT 2458200.5                 MPC
    M 187.17126              (2000.0)            P               Q
    n   1.18831006     Peri.  254.84384     +0.86787146     -0.49389924
    a   0.8827740      Node   134.71861     +0.47980055     +0.80539456
    e   0.4340088      Incl.    4.31829     +0.12880434     +0.32772420
    P   0.83           H   23.2           G   0.15           U   4
    Residuals in seconds of arc
    170304 703  0.0   0.2-    170305 G96  0.1+  0.1+    170309 I52  0.1-  0.2+
    170304 703  0.0   0.0     170305 G96  0.4-  0.2+    170309 I52  0.2+  0.2-
    170304 703  0.2-  0.4+    170305 926  0.0   0.2+    170315 I52  0.1+  0.2-
    170304 703  0.1+  0.5-    170305 926  0.5+  0.1-    170315 I52  0.5-  0.3-
    170304 G96  0.4+  0.3-    170306 G96  0.2-  0.2-    170315 I52  0.2+  0.1+
    170304 G96  0.6+  0.2-    170306 G96  0.4+  0.6-    170315 I52  0.3-  0.2+
    170304 G96  0.1+  0.3-    170306 G96  0.0   0.2-    170316 G96  0.2+  0.1-
    170304 G96  0.2+  0.2-    170306 G96  0.1-  0.1-    170316 G96  0.1+  0.1+
    170304 703  1.3-  1.1+    170306 G96  0.2+  0.0     170316 G96  0.5+  0.4-
    170304 703  0.2-  0.4-    170306 G96  0.1-  0.2-    170316 G96  0.2+  0.4-
    170304 703  0.3-  0.2+    170306 G96  0.6+  0.2+    170317 G96  0.1-  0.1+
    170304 G96  0.4+  0.1-    170306 G96  0.1-  0.5+    170317 G96  0.1-  0.1+
    170304 G96  0.1+  0.0     170306 G96  0.3-  0.0     170317 G96  0.1+  0.2+
    170304 G96  0.9+  0.5+    170306 G96  0.2+  0.0     170317 G96  0.3-  0.2+
    170304 G96  0.1+  0.2-    170306 G96  0.2+  0.1-    170318 F51  0.1+  0.0
    170304 I52  0.2-  0.2-    170306 G96  0.2+  0.2-    170318 F51  0.1+  0.0
    170304 I52  0.2-  0.0     170306 F51  0.2-  0.1+    170318 F51  0.1+  0.0
    170304 I52  0.2-  0.1-    170306 F51  0.2-  0.1+    170318 F51  0.0   0.0
    170304 I52  0.7-  0.1-    170306 F51  0.1+  0.1+    170323 G96  0.2+  0.6-
    170304 703  0.2-  0.4-    170306 F51  0.2-  0.1+    170323 G96  0.3+  0.2-
    170304 703  0.1-  0.2+    170306 F51  0.0   0.1+    170323 G96  0.4+  0.3-
    170304 703  0.1+  0.2+    170306 F51  0.2-  0.1+    170323 G96  0.4+  0.3+
    170304 300  0.1+  0.0     170306 F51  0.2-  0.0     170323 F51  0.1-  0.2+
    170304 300  0.0   0.1+    170306 F51  0.2+  0.0     170323 F51  0.1-  0.1+
    170304 300  0.2+  0.2-    170308 204  0.1-  0.3-    170323 F51  0.2-  0.2+
    170304 300  0.0   0.0     170308 204  0.2+  0.3-    170403 G96  0.5-  0.0
    170304 300  0.0   0.2-    170308 204  0.1+  0.3-    170403 G96  0.5+  0.6+
    170305 W25  0.1+  0.4+    170309 W25  0.1-  1.3-    170403 G96  1.0-  1.2+
    170305 W25  0.4+  0.0     170309 W25  0.4+  1.3-    170403 G96  1.0-  0.4+
    170305 H21  0.1+  0.4+    170309 H21  0.2-  0.0     180517 T12  0.1-  0.2-
    170305 H21  0.0   0.5+    170309 H21  0.3-  0.1+    180517 T12  0.0   0.1-
    170305 H21  0.3+  0.5+    170309 H21  0.0   0.1+    180522 T12  0.1+  0.0
    170305 G96  0.1+  0.5-    170309 I52  0.0   0.0     180522 T12  0.0   0.1-
    170305 G96  0.2+  0.1-    170309 I52  0.4-  0.6-
    
    Ephemeris:
    2017 EH1                 a,e,i = 0.88, 0.43, 4                   q = 0.4996
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2018 04 23    18 37 09.2 -09 44 26   0.3920  1.2107   112.5    50.1    23.4
    ...
    2018 05 08    19 11 01.9 -04 01 00   0.2697  1.1564   116.9    51.1    22.6
    ...
    2018 05 16    19 35 34.1 +01 10 27   0.2086  1.1197   116.5    53.9    22.0
    ...
    2018 05 22    20 01 42.7 +07 06 03   0.1663  1.0887   113.2    58.7    21.6
    2018 05 23    20 07 11.5 +08 20 49   0.1597  1.0832   112.3    59.8    21.5
    2018 05 24    20 13 06.8 +09 41 09   0.1533  1.0776   111.2    61.1    21.5
    ...
    2018 05 30    21 02 06.3 +20 04 09   0.1193  1.0424   100.7    72.8    21.2
    ...
    2018 06 07    23 15 57.6 +38 25 10   0.09672 0.9908    73.0   101.7    21.8
    ...
    2018 06 22    04 05 30.5 +36 51 17   0.1585  0.8798    28.2   146.9    26.8
    
    A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-K70
    

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