[Iaude] MPEC P99: 2018 PE21 [a=1.89,e=0.33,i=9.3,H=20.8]

mpec at mpcdb1.cfa.harvard.edu mpec at mpcdb1.cfa.harvard.edu
Tue Aug 14 13:51:18 EDT 2018


M.P.E.C. 2018-P99                                Issued 2018 Aug. 14, 17:48 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 PE21
 
Observations:
     K18P21E* C2018 08 05.40552 21 51 28.637-14 15 47.59         22.0 wUEP099F51
     K18P21E  C2018 08 05.41731 21 51 27.425-14 15 45.83         22.1 wUEP099F51
     K18P21E  C2018 08 05.42911 21 51 26.234-14 15 44.16         21.8 wUEP099F51
     K18P21E KC2018 08 06.34975 21 49 56.47 -14 13 29.8          21.7 RoEP099291
     K18P21E KC2018 08 06.35646 21 49 55.82 -14 13 28.5          21.3 RoEP099291
     K18P21E KC2018 08 06.36317 21 49 55.11 -14 13 27.7          21.9 RoEP099291
     K18P21E |C2018 08 06.37960 21 49 53.01 -14 13 12.1          21.3 GUEP099807
     K18P21E |C2018 08 06.38579 21 49 52.38 -14 13 11.5          21.3 GUEP099807
     K18P21E |C2018 08 06.39197 21 49 51.78 -14 13 10.6          21.5 GUEP099807
     K18P21E KC2018 08 09.27047821 45 12.23 -14 06 29.1          21.5 VuEP099H21
     K18P21E KC2018 08 09.27616921 45 11.67 -14 06 28.6          21.4 VuEP099H21
     K18P21E KC2018 08 09.28409521 45 10.88 -14 06 27.3          21.6 VuEP099H21
     K18P21E |C2018 08 14.25552 21 37 15.27 -13 54 35.6          21.1 GUEP099807
     K18P21E |C2018 08 14.26096 21 37 14.76 -13 54 34.8          21.1 GUEP099807
     K18P21E |C2018 08 14.26655 21 37 14.21 -13 54 34.0          21.1 GUEP099807
 
Observer details:
291 LPL/Spacewatch II.  Observer M. T. Read.  1.8-m f/2.7 reflector + CCD.
807 Cerro Tololo.  Observers T. Linder, R. Holmes.  1.00-m f/10.0 astrograph
    + 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. Magnier, Y. Ramanjooloo, R. Wainscoat, C. Waters, R. Weryk.
    1.8-m Ritchey-Chretien + CCD.
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes.  0.81-m f/4.0
    astrograph + CCD.
 
Orbital elements:
2018 PE21                                                Earth MOID = 0.3172 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5                 MPC
M   4.34402              (2000.0)            P               Q
n   0.38070031     Peri.  263.72282     -0.70406916     +0.70272608
a   1.8854451      Node   320.84991     -0.57049982     -0.64550359
e   0.3276745      Incl.    9.32373     -0.42286708     -0.29916747
P   2.59           H   20.8           G   0.15           U   7
Residuals in seconds of arc
180805 F51  0.1+  0.1-    180806 291  0.1-  0.3+    180809 H21  0.0   0.2-
180805 F51  0.1-  0.0     180806 807  0.0   0.2+    180809 H21  0.2+  0.1-
180805 F51  0.0   0.1-    180806 807  0.1-  0.2-    180814 807  0.2-  0.0
180806 291  0.2-  0.2+    180806 807  0.1+  0.3-    180814 807  0.1+  0.0
180806 291  0.3+  0.5+    180809 H21  0.2-  0.1+    180814 807  0.1+  0.0

Ephemeris:
2018 PE21                a,e,i = 1.89, 0.33, 9                   q = 1.2676
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2018 07 15    22 21 05.4 -15 25 22   0.7027  1.6216   140.5    23.5    22.2
...
2018 07 30    22 01 37.4 -14 32 32   0.6990  1.6866   159.0    12.4    21.9
...
2018 08 07    21 48 53.3 -14 11 46   0.7141  1.7213   169.6     6.1    21.7
...
2018 08 13    21 39 13.8 -13 57 35   0.7344  1.7473   177.5     1.5    21.5
2018 08 14    21 37 39.5 -13 55 15   0.7386  1.7516   178.8     0.7    21.5
2018 08 15    21 36 06.3 -13 52 55   0.7430  1.7559   179.6     0.2    21.4
...
2018 08 21    21 27 16.4 -13 38 48   0.7742  1.7817   172.1     4.5    21.9
...
2018 08 29    21 17 18.1 -13 19 01   0.8279  1.8158   162.1     9.8    22.3
...
2018 09 13    21 05 44.2 -12 37 22   0.9631  1.8785   145.0    17.9    23.0

A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-P99



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