[Iaude] MPEC P41: 2018 PF9 [a=2.31,e=0.51,i=2.0,H=25.1]

[mpec at mpcdb1.cfa.harvard.edu]

M.P.E.C. 2018-P41                                Issued 2018 Aug. 10, 15:03 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 PF9
 
Observations:
     K18P09F* C2018 08 05.37501 21 04 38.940-27 31 14.91         21.4 wUEP041F51
     K18P09F  C2018 08 05.38389 21 04 42.318-27 31 11.49         21.3 wUEP041F51
     K18P09F  C2018 08 05.39276 21 04 45.650-27 31 07.98         21.2 wUEP041F51
     K18P09F KC2018 08 06.26514521 10 39.77 -27 24 01.5          21.5 VuEP041H21
     K18P09F KC2018 08 06.27794121 10 44.64 -27 23 54.3          21.4 VuEP041H21
     K18P09F |C2018 08 06.28904 21 10 47.33 -27 22 30.5          21.1 GUEP041807
     K18P09F |C2018 08 06.29212 21 10 48.51 -27 22 28.4          21.2 GUEP041807
     K18P09F KC2018 08 06.29263021 10 50.26 -27 23 45.7          21.1 VuEP041H21
     K18P09F |C2018 08 06.29518 21 10 49.67 -27 22 26.4          21.1 GUEP041807
     K18P09F KC2018 08 06.29672 21 10 50.26 -27 22 25.4          21.3 GUEP041W87
     K18P09F KC2018 08 06.30080 21 10 51.82 -27 22 22.7          21.1 GUEP041W87
     K18P09F KC2018 08 06.30489 21 10 53.37 -27 22 20.1          21.2 GUEP041W87
     K18P09F KC2018 08 06.30898 21 10 54.93 -27 22 17.3          21.1 GUEP041W87
     K18P09F KC2018 08 06.31307 21 10 56.51 -27 22 14.6          21.1 GUEP041W87
     K18P09F KC2018 08 06.33246 21 11 07.22 -27 23 19.6                oEP041691
     K18P09F KC2018 08 06.33970 21 11 09.94 -27 23 15.7                oEP041691
     K18P09F KC2018 08 06.34694 21 11 12.70 -27 23 10.7                oEP041691
     K18P09F KC2018 08 09.61206 21 33 06.17 -26 42 48.3          21.0 GVEP041474
     K18P09F KC2018 08 09.61442 21 33 07.04 -26 42 45.6          21.3 GVEP041474
     K18P09F KC2018 08 09.61984 21 33 09.08 -26 42 40.4          21.4 GVEP041474
 
Observer details:
474 Mount John Observatory, Lake Tekapo.  Observers A. C. Gilmore,
    P. M. Kilmartin.  Measurer P. M. Kilmartin.  1.0-m f/7.7 reflector + CCD.
691 Steward Observatory, Kitt Peak.  Observer M. T. Read.  0.9-m f/3 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.
W87 Cerro Tololo-LCO C.  Observers T. Lister, J. Chatelain, E. Gomez,
    S. Greenstreet, A. Tedeschi.  Measurers A. Tedeschi, T. Lister.  1.0-m
    f/8.0 Ritchey-Chretien + CCD.
 
Orbital elements:
2018 PF9                                                 Earth MOID = 0.1140 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5                 MPC
M 321.32431              (2000.0)            P               Q
n   0.28010374     Peri.  213.46095     +0.70922998     +0.70411753
a   2.3134322      Node   101.73908     -0.63875749     +0.66271694
e   0.5130103      Incl.    2.03717     -0.29829800     +0.25499954
P   3.52           H   25.1           G   0.15           U   7
Residuals in seconds of arc
180805 F51  0.2-  0.2-    180806 H21  0.2+  0.2+    180806 691  0.8+  0.4+
180805 F51  0.2+  0.1-    180806 807  0.6-  0.0     180806 691  0.7+  0.1+
180805 F51  0.1+  0.1-    180806 W87  0.6-  0.1-    180806 691  1.1+  0.9+
180806 H21  0.4-  0.2+    180806 W87  0.6-  0.0     180809 474  0.0   0.6-
180806 H21  0.3-  0.2+    180806 W87  0.7-  0.2-    180809 474  0.1-  0.1-
180806 807  0.7-  0.1-    180806 W87  0.8-  0.1-    180809 474  0.2+  0.0
180806 807  0.6-  0.0     180806 W87  0.6-  0.1-

Ephemeris:
2018 PF9                 a,e,i = 2.31, 0.51, 2                   q = 1.1266
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2018 07 11    18 50 04.8 -24 29 16   0.1567  1.1722   172.8     6.2    21.9
...
2018 07 26    19 57 16.8 -27 24 48   0.1226  1.1368   170.6     8.4    21.4
...
2018 08 03    20 48 27.6 -27 43 48   0.1150  1.1281   169.9     9.1    21.3
...
2018 08 09    21 29 04.5 -26 51 47   0.1147  1.1266   168.6    10.2    21.3
2018 08 10    21 35 40.6 -26 37 31   0.1152  1.1268   168.4    10.5    21.3
2018 08 11    21 42 10.8 -26 21 48   0.1157  1.1271   168.1    10.7    21.4
...
2018 08 17    22 18 19.0 -24 22 51   0.1218  1.1313   166.6    12.0    21.5
...
2018 08 25    22 56 36.5 -21 09 40   0.1364  1.1435   165.6    12.7    21.8
...
2018 09 09    23 39 05.6 -15 29 59   0.1811  1.1849   167.5    10.6    22.4

A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-P41