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  • MPEC 2019-T195 : 2015 HG170

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    M.P.E.C. 2019-T195                             Issued 2019 October 10, 15:18 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 HG170                                
    
    
                               Revision to MPEC 2015-H139                           
    
    Additional Observations:
         K15HH0G  C2019 09 26.58213403 43 50.065+19 48 34.36         23.57GVET195T12
         K15HH0G  C2019 09 26.59381003 43 50.342+19 48 37.18         23.56GVET195T12
         K15HH0G  C2019 09 27.56935003 44 15.097+19 52 35.96         23.94GVET195T12
         K15HH0G  C2019 09 27.58407903 44 15.412+19 52 39.50         23.81GVET195T12
    
    Observer details:
    T12 Mauna Kea-UH/Tholen NEO Follow-Up (2.24-m).  Observers D. Hung, D. Fohring, 
       M.-T. Hui.  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, reference and Delta-T
    190926 T12 66.8+ 20.3+    190927 T12 68.0+ 20.5+    MPO382787   +0.03 days
    
    Orbital elements:
    2015 HG170                                               Earth MOID = 0.1488 AU
    Epoch 2019 Apr. 27.0 TT = JDT 2458600.5                 Veres
    M 232.16892              (2000.0)            P               Q
    n   0.38371350     Peri.  116.28134     -0.85139504     -0.52293143
    a   1.8755616      Node    32.23620     +0.44978168     -0.76792903
    e   0.4030832      Incl.    4.39280     +0.26985723     -0.36990231
    P   2.57           H   21.1           G   0.15           U   2
    Residuals in seconds of arc
    150301 F51  0.1+  0.0     150427 926  0.4+  0.1+    150511 807  0.3-  0.7+
    150301 F51  0.1+  0.0     150427 926  0.3-  0.0     150511 807  0.6-  0.5+
    150301 F51  0.0   0.0     150427 926  0.2-  0.5-    150511 807  0.2-  0.1+
    150301 F51  0.0   0.1-    150427 926  0.0   0.5-    150512 G96  0.4-  0.1+
    150322 G96  0.2-  0.1+    150427 926  0.1-  0.2-    150512 G96  0.1+  0.1-
    150322 G96  0.4-  0.1+    150427 926  0.1+  0.0     150512 G96  0.3+  0.3+
    150322 G96  0.1-  0.1+    150428 807  0.2+  0.3-    150512 G96  0.2+  0.0
    150322 G96  0.3+  0.1+    150428 807  0.0   0.3-    150518 807  0.3-  0.0
    150410 G96  0.2-  0.4+    150428 807  0.1+  0.6-    150518 807  0.2+  0.3-
    150410 G96  0.4+  0.2+    150501 448  0.3+  0.6+    150518 807  0.0   0.1-
    150410 G96  0.0   0.3+    150501 448  0.5+  0.8+    150519 F51  0.0   0.1-
    150410 G96  0.1+  0.5+    150501 448  0.6-  0.6-    150519 F51  0.1-  0.1+
    150411 691  0.1-  0.1+    150507 691  0.4+  0.3-    150519 F51  0.1+  0.0
    150411 691  0.3-  0.3+    150507 691  1.2+  0.5-    150519 F51  0.0   0.2-
    150411 691  0.4-  0.2+    150507 691  0.5+  0.0     150519 474  0.2-  0.0
    150423 F51  0.1+  0.1+    150508 807  0.3-  0.6-    150519 474  0.4-  0.0
    150423 F51  0.0   0.1+    150508 807  0.2-  0.4-    150519 474  0.1-  0.3+
    150423 F51  0.0   0.2+    150508 807  0.2-  0.1-    150521 F51  0.2+  0.1+
    150424 807  0.0   0.3+    150508 705  0.1-  0.1+    150521 F51  0.1+  0.1+
    150424 807  0.0   0.4+    150508 705  0.0   0.3+    150521 F51  0.1-  0.2+
    150424 807  0.2-  0.3+    150508 705  0.1+  0.2+    190926 T12  0.1-  0.1+
    150427 807  0.0   0.1+    150509 691  0.3+  0.2-    190926 T12  0.0   0.0
    150427 807  0.2+  0.2+    150509 691  0.2-  0.2-    190927 T12  0.0   0.0
    150427 807  0.0   0.3+    150509 691  0.0   0.8-    190927 T12  0.0   0.0
    
    Ephemeris:
    2015 HG170               a,e,i = 1.88, 0.40, 4                   q = 1.1196
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2019 09 10    03 32 43.0 +18 34 14   1.3850  1.9872   111.4    28.2    24.5
    ...
    2019 09 25    03 43 06.1 +19 42 01   1.1700  1.9146   123.3    26.0    24.0
    ...
    2019 10 03    03 45 56.7 +20 13 55   1.0636  1.8745   130.4    24.0    23.7
    ...
    2019 10 09    03 46 32.0 +20 35 50   0.9887  1.8438   136.1    22.1    23.5
    2019 10 10    03 46 29.4 +20 39 19   0.9766  1.8387   137.1    21.7    23.4
    2019 10 11    03 46 24.2 +20 42 44   0.9647  1.8335   138.1    21.3    23.4
    ...
    2019 10 17    03 44 56.8 +21 02 05   0.8964  1.8023   144.3    18.8    23.1
    ...
    2019 10 25    03 40 18.3 +21 24 01   0.8142  1.7600   153.2    14.8    22.7
    ...
    2019 11 09    03 23 01.5 +21 47 39   0.6928  1.6789   171.5     5.0    21.9
    
    A. U. Tomatic                (C) Copyright 2019 MPC           M.P.E.C. 2019-T195
    


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