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  • MPEC 2017-Y147: 2001 LD

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    M.P.E.C. 2017-Y147                               Issued 2017 Dec. 30, 12:56 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
    
                                        2001 LD
    
                               Revision to MPEC 2001-L20
    
    Additional Observations:
         K01L00D  C2017 12 29.41863 08 18 27.116+68 30 25.93         19.9 iUEY147F51
         K01L00D  C2017 12 29.42530 08 18 27.565+68 31 09.33         19.9 iUEY147F51
         K01L00D  C2017 12 29.43122 08 18 27.966+68 31 48.47         19.9 iUEY147F51
         K01L00D  C2017 12 29.43791 08 18 28.431+68 32 32.20         19.9 iUEY147F51
         K01L00D  C2017 12 29.44384 08 18 28.820+68 33 10.63         19.9 iUEY147F51
         K01L00D  C2017 12 29.45644 08 18 29.683+68 34 33.61         19.8 iUEY147F51
         K01L00D  C2017 12 29.46309 08 18 30.107+68 35 16.90         19.8 iUEY147F51
         K01L00D  C2017 12 30.33144 08 19 54.62 +70 09 03.9          19.8 RoEY147926
         K01L00D  C2017 12 30.33657 08 19 55.00 +70 09 37.1          19.7 RoEY147926
         K01L00D  C2017 12 30.34174 08 19 55.42 +70 10 10.7          19.9 RoEY147926
         K01L00D  C2017 12 30.47066 08 20 05.12 +70 24 02.2          20.3 RoEY147926
         K01L00D  C2017 12 30.47510 08 20 05.43 +70 24 30.6          20.4 RoEY147926
         K01L00D  C2017 12 30.48078 08 20 05.90 +70 25 06.4          20.8 RoEY147926
    
    Observer details:
    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.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc (or integer in degrees), reference and Delta-T
    171229 F51   61-  101+    171230 926   56-  103+    MPO 15103   +195 day
    
    Orbital elements:
    2001 LD                                             PHA, Earth MOID = 0.0363 AU
    Epoch 2017 Sept. 4.0 TT = JDT 2458000.5                 MPC
    M 243.31454              (2000.0)            P               Q
    n   0.58225158     Peri.  114.26227     -0.85104585     +0.17936652
    a   1.4203507      Node    79.26989     -0.41790484     -0.80041432
    e   0.3757347      Incl.   30.15155     +0.31792532     -0.57198302
    P   1.69           H   20.4           G   0.15           U   2
    Residuals in seconds of arc
    010602 704  0.1-  0.2-    010604 151  1.4+  1.4-    010609 649  0.3-  1.1-
    010602 704  0.6+  0.4-    010604 151  0.6+  0.4-    010609 649  0.6-  1.4+
    010602 704  0.2-  0.4-    010604 151  0.9-  0.7+    010609 649  0.1-  1.0-
    010602 704  0.2-  0.1-    010604 151  0.6+  0.2+    010609 649 (0.5-  1.9+)
    010603 704  0.8+  0.0     010605 854 (0.8-  1.9-)   010609 649  0.2-  0.2+
    010603 704  0.5+  0.3-    010605 854  0.2+  0.7+    010610 649  0.7+  0.0
    010603 704  0.6+  0.4-    010605 854  0.1-  1.1-    010610 649  0.4+  0.0
    010603 704  0.3+  0.4-    010605 670  1.1+  0.5-    010610 649  0.6+  0.1+
    010603 704  1.0+  0.1+    010605 854 (0.7+  6.5-)   010610 649  0.5+  1.4-
    010603 704  0.5+  0.4+    010605 854  0.2+  1.1+    010610 649 (0.1+  1.9-)
    010603 704  0.4+  0.8+    010605 854 (1.9+  3.5-)   010611 670  0.2+  0.3+
    010603 704  1.0+  0.2+    010605 670  0.4+  1.3-    010611 670  0.2+  0.5+
    010603 704  0.7-  0.1-    010605 670  0.3-  0.0     010611 919  0.1+  0.3-
    010603 704  0.4+  0.3-    010605 620  0.9-  0.0     010611 919  1.0-  0.2-
    010603 704  0.9+  0.4-    010605 620  1.0+  1.5+    010611 919  0.2+  0.1+
    010603 704  0.3+  0.3+    010605 620  0.1+  0.2+    010611 670  0.6+  0.7+
    010603 704  1.0+  0.2+    010605 620  0.7+  0.3-    010611 587  0.0   0.1+
    010603 704  0.2+  0.9-    010605 557  0.1+  0.3-    010611 587  0.1-  0.5-
    010603 704  0.0   1.0-    010605 557  0.0   0.0     010611 587  0.6+  0.4+
    010603 704  0.8+  1.1+    010605 557  0.2+  0.1+    010614 808 (0.6+  2.1+)
    010603 704  0.1-  0.7-    010605 046  0.4+  0.4-    010614 808  0.3+  0.2+
    010603 704  0.3+  0.2+    010605 046  0.0   0.3-    010614 808 (1.5-  0.6+)
    010603 704  0.5+  1.0+    010605 046  0.3+  0.5-    010614 919 (1.7+  1.7+)
    010604 658  0.4+  0.1-    010605 046  0.5+  0.3-    010614 919 (0.7+  2.7-)
    010604 658  0.3+  0.4-    010605 046  0.6+  0.9-    171229 F51  0.0   0.3+
    010604 658  0.5+  0.3-    010605 046  0.6+  0.7-    171229 F51  0.1-  0.2-
    010604 670 (0.0   3.1-)   010605 046  0.0   0.3-    171229 F51  0.1-  0.1+
    010604 699  0.5+  0.6-    010607 658  0.7+  0.1+    171229 F51  0.0   0.0
    010604 670  0.2-  0.1-    010607 658  1.0+  0.3-    171229 F51  0.0   0.4-
    010604 699 (0.3-  1.7-)   010607 658 (0.7+  1.6-)   171229 F51  0.1+  0.1+
    010604 658  0.8+  0.6-    010608 157  0.5-  1.4+    171229 F51  0.0   0.1-
    010604 658  0.3+  0.9-    010608 157  1.2-  1.0+    171230 926  0.0   0.4+
    010604 658  0.2+  0.5-    010608 157 (0.6+  1.6+)   171230 926  0.0   0.2+
    010604 699  0.1-  0.0     010609 670  0.5+  0.5-    171230 926  0.2+  0.2+
    010604 670  0.5-  1.1-    010609 670  0.4+  0.4+    171230 926  0.2+  0.2+
    010604 699 (0.9-  1.7-)   010609 670  0.3+  0.0     171230 926  0.1-  0.2+
    010604 151  1.4+  0.1+    010609 649  0.1+  0.1-    171230 926  0.0   0.3-
    010604 151  0.7+  0.2+    010609 649  0.2+  1.5-
    
    Ephemeris:
    2001 LD                  a,e,i = 1.42, 0.38, 30                  q = 0.8867
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2017 11 30    07 46 43.8 +27 20 45   0.5201  1.3974   133.8    30.6    21.0
    ...
    2017 12 15    08 02 14.7 +44 12 08   0.3875  1.3129   142.4    27.2    20.2
    ...
    2017 12 23    08 10 22.4 +57 02 36   0.3459  1.2666   139.4    30.3    19.9
    ...
    2017 12 29    08 17 46.6 +67 44 45   0.3309  1.2315   132.6    36.0    19.9
    2017 12 30    08 19 20.0 +69 32 56   0.3297  1.2257   131.1    37.2    19.9
    2017 12 31    08 21 03.8 +71 20 42   0.3290  1.2198   129.7    38.4    20.0
    ...
    2018 01 06    08 40 59.7 +81 43 57   0.3315  1.1848   120.1    45.9    20.1
    ...
    2018 01 14    19 10 34.5 +85 56 41   0.3503  1.1384   107.4    55.6    20.4
    ...
    2018 01 29    20 02 43.6 +69 57 32   0.4075  1.0549    88.3    68.9    21.0
    
    A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-Y147
    

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