[Iaude] MPEC A33: 2018 PL23 [a=1.57,e=0.79,i=14.3,H=19.8,PHA]

[mpec at mpcdb1.cfa.harvard.edu]

M.P.E.C. 2019-A33                                Issued 2019 Jan. 4, 11:45 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


                                   2018 PL23
 
                           Revision to MPEC 2018-Q12
 
Additional Observations:
     K18P23L  C2016 08 06.45534120 52 07.147+01 25 57.21         22.4 GVEA033F51
     K18P23L  C2016 08 06.46733220 52 05.693+01 25 50.77         22.6 GVEA033F51
     K18P23L  C2016 08 26.28799420 11 48.971-02 26 32.36         22.1 GVEA033F51
     K18P23L  C2016 08 26.32374820 11 44.681-02 27 02.12         22.9 GVEA033F51
 
Observer details:
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, K. Chambers, T. Lowe,
    E. Magnier, A. Schultz, M. Willman.  Measurers S. Chastel, M. Huber,
    Y. Ramanjooloo, R. Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
 
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
160806 F51 28.5+  8.2+    160826 F51 23.1+  7.0+    MPO452063   +0.0026 day
 
Orbital elements:
2018 PL23                                           PHA, Earth MOID = 0.0324 AU
Epoch 2019 Apr. 27.0 TT = JDT 2458600.5                 MPC
M  57.08790              (2000.0)            P               Q
n   0.50230759     Peri.  293.41822     -0.37492182     -0.92703550
a   1.5673148      Node   178.55687     +0.91496105     -0.37110387
e   0.7867831      Incl.   14.32254     +0.14926457     -0.05373177
P   1.96           H   19.8           G   0.15           U   4
Residuals in seconds of arc
160806 F51  0.1+  0.1-    180814 291  0.2+  0.0     180905 291  0.2+  0.0
160806 F51  0.1+  0.1-    180816 807  0.3-  0.1-    180905 291  0.2+  0.0
160826 F51  0.0   0.1+    180816 807  0.1+  0.3-    180905 474  0.5-  0.6-
160826 F51  0.2-  0.0     180816 679  0.1+  0.2+    180905 474  0.2+  0.0
180812 F51  0.1-  0.1+    180816 679  0.3-  0.1-    180905 474  0.8+  0.4-
180812 F51  0.1-  0.2-    180831 695  0.1-  0.3+    180905 474  0.1+  0.2-
180812 F51  0.2-  0.2-    180831 695  0.1-  0.1+    180910 V06  0.2-  0.1-
180813 H21  0.3-  0.1-    180831 695  0.0   0.0     180910 V06  0.1+  0.4-
180813 H21  0.4-  0.1+    180901 291  0.0   0.3-    180910 V06  0.1-  0.3-
180813 H21  0.3-  0.0     180901 291  0.1-  0.1-    180910 V06  0.0   0.0
180814 H21  0.2+  0.1+    180901 291  0.4-  0.1+    181028 807  0.1-  0.2+
180814 H21  0.2+  0.5+    180905 H21  0.2+  0.1+    181028 807  0.1+  0.7+
180814 291  0.2+  0.7+    180905 H21  0.1+  0.2+    181028 807  0.1-  0.4-
180814 291  0.2+  0.3+    180905 H21  0.2+  0.1+

Ephemeris:
2018 PL23                a,e,i = 1.57, 0.79, 14                  q = 0.3342
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2018 12 05    20 00 44.1 -22 10 43   0.9643  0.7504    45.3    68.9    21.5
...
2018 12 20    20 00 08.5 -26 22 11   0.7779  0.4909    29.5    99.2    21.3
...
2018 12 28    19 26 46.0 -29 31 04   0.6771  0.3729    15.0   137.0    23.3
...
2019 01 03    18 36 54.0 -29 49 14   0.6674  0.3343     7.7   156.7    26.5
2019 01 04    18 28 36.9 -29 30 12   0.6753  0.3346     9.2   152.0    25.4
2019 01 05    18 20 56.0 -29 05 41   0.6859  0.3370    11.1   145.9    24.3
...
2019 01 11    17 52 27.7 -25 46 01   0.7886  0.3886    22.0   108.5    21.3
...
2019 01 19    17 50 07.1 -21 54 42   0.9523  0.5129    30.7    78.1    21.0
...
2019 02 03    18 15 39.1 -17 26 45   1.1904  0.7722    40.2    55.5    21.6

A. U. Tomatic                (C) Copyright 2019 MPC           M.P.E.C. 2019-A33