[Iaude] MPEC P113: 2018 PW21 [a=2.13,e=0.49,i=9.1,H=24.9]

Wed Aug 15 14:49:17 EDT 2018

M.P.E.C. 2018-P113                               Issued 2018 Aug. 15, 18:44 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 PW21
 
Observations:
     K18P21W* C2018 08 11.49346 22 10 49.694-04 28 50.31         20.9 wUEP113F51
     K18P21W  C2018 08 11.50546 22 10 54.032-04 29 51.09         21.0 wUEP113F51
     K18P21W  C2018 08 11.51745 22 10 58.376-04 30 51.70         20.9 wUEP113F51
     K18P21W  C2018 08 11.52953 22 11 02.756-04 31 52.80         20.9 wUEP113F51
     K18P21W KC2018 08 12.01304 22 14 12.90 -05 12 44.2          20.3 GVEP113104
     K18P21W KC2018 08 12.02263 22 14 16.35 -05 13 31.6          20.5 GVEP113104
     K18P21W KC2018 08 12.03221 22 14 19.80 -05 14 19.0          20.5 GVEP113104
     K18P21W KC2018 08 12.29997422 16 02.10 -05 36 11.3          21.0 VuEP113H21
     K18P21W KC2018 08 12.30297822 16 03.17 -05 36 25.8          20.8 VuEP113H21
     K18P21W KC2018 08 12.30802422 16 04.94 -05 36 50.4          21.0 VuEP113H21
     K18P21W KC2018 08 12.37206 22 16 28.10 -05 42 02.6          21.3 GUEP113734
     K18P21W KC2018 08 12.37897 22 16 30.57 -05 42 35.1          20.6 GUEP113734
     K18P21W KC2018 08 12.38588 22 16 33.02 -05 43 09.7          21.8 GUEP113734
     K18P21W _C2018 08 12.47480022 17 08.461-05 49 58.45         21.0 GVEP113568
     K18P21W _C2018 08 12.47763322 17 09.440-05 50 12.22         20.9 GVEP113568
     K18P21W _C2018 08 12.47953022 17 10.092-05 50 21.41         21.0 GVEP113568
     K18P21W |C2018 08 15.20406 22 33 04.60 -09 14 14.9          21.3 VuEP113807
     K18P21W |C2018 08 15.20860 22 33 05.93 -09 14 34.2          21.0 VuEP113807
     K18P21W |C2018 08 15.21325 22 33 07.32 -09 14 53.7          21.1 VuEP113807
 
Observer details:
104 San Marcello Pistoiese.  Observers P. Bacci, M. Maestripieri.  Measurers
    P. Bacci, L. Tesi, G. Fagioli.  0.6-m f/4.0 reflector + CCD.
568 Mauna Kea.  Observers R. J. Wainscoat, L. Wells.  Measurers M. Micheli,
    R. J. Wainscoat.  3.6-m Canada-France-Hawaii Telescope + CCD.
734 Farpoint Observatory.  Observer G. Hug.  0.69-m reflector + CCD.
807 Cerro Tololo.  Observers T. Linder, R. Holmes.  0.61-m f/6.5 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.  0.76-m f/3.0
    astrograph + CCD.
 
Orbital elements:
2018 PW21                                                Earth MOID = 0.0871 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5                 MPC
M 321.84893              (2000.0)            P               Q
n   0.31789684     Peri.  153.80035     +0.46153642     +0.88208122
a   2.1262381      Node   143.47120     -0.83923789     +0.46864217
e   0.4901391      Incl.    9.12820     -0.28751331     +0.04803375
P   3.10           H   24.9           G   0.15           U   7
Residuals in seconds of arc
180811 F51  0.0   0.1-    180812 H21  0.7-  0.0     180812 568  0.0   0.1+
180811 F51  0.0   0.0     180812 H21  0.5-  0.2+    180812 568  0.0   0.1+
180811 F51  0.0   0.1+    180812 H21  0.6-  0.2+    180815 807  0.1+  0.2+
180811 F51  0.1+  0.1+    180812 734  0.1-  0.8-    180815 807  0.1-  0.0
180812 104  0.2+  0.0     180812 734  0.4+  0.2+    180815 807  0.1+  0.0
180812 104  0.3+  0.1+    180812 734  0.5+  0.9-
180812 104  0.5+  0.1+    180812 568  0.1-  0.2+

Ephemeris:
2018 PW21                a,e,i = 2.13, 0.49, 9                   q = 1.0841
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2018 07 16    18 22 31.1 +29 48 06   0.1126  1.0856   125.5    49.7    22.2
...
2018 07 31    20 35 18.5 +14 19 02   0.08803 1.0902   147.3    30.2    21.1
...
2018 08 08    21 45 50.1 +00 49 34   0.09448 1.1037   160.8    17.6    20.9
...
2018 08 14    22 26 19.2 -07 47 47   0.1087  1.1186   165.4    13.2    21.1
2018 08 15    22 31 56.7 -09 00 21   0.1118  1.1215   165.6    13.0    21.2
2018 08 16    22 37 16.1 -10 08 55   0.1149  1.1244   165.7    12.9    21.2
...
2018 08 22    23 03 26.9 -15 42 26   0.1370  1.1443   164.9    13.3    21.7
...
2018 08 30    23 26 08.6 -20 21 49   0.1727  1.1759   162.9    14.6    22.3
...
2018 09 14    23 46 24.4 -23 59 12   0.2558  1.2483   159.1    16.7    23.3

A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-P113