[Iaude] MPEC P78: 2018 PC20 [a=1.71,e=0.40,i=9.0,H=25.3]

mpec at mpcdb1.cfa.harvard.edu mpec at mpcdb1.cfa.harvard.edu
Sun Aug 12 17:17:17 EDT 2018


M.P.E.C. 2018-P78                                Issued 2018 Aug. 12, 21:13 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 PC20
 
Observations:
     K18P20C* C2018 08 10.52233 21 38 04.60 -06 21 50.9          19.0 oUEP078T08
     K18P20C  C2018 08 10.52335 21 38 05.78 -06 22 07.6          18.4 oUEP078T08
     K18P20C  C2018 08 10.53335 21 38 17.82 -06 24 42.2          18.8 oUEP078T08
     K18P20C  C2018 08 10.53381 21 38 18.33 -06 24 48.8          18.3 oUEP078T08
     K18P20C  C2018 08 10.54391 21 38 30.47 -06 27 24.9          18.6 oUEP078T08
     K18P20C  C2018 08 10.55540 21 38 44.24 -06 30 21.7          18.4 oUEP078T08
     K18P20C KC2018 08 10.92175521 46 40.59 -08 04 07.5          18.4 G EP078J95
     K18P20C KC2018 08 10.92485821 46 44.23 -08 04 53.1          18.6 G EP078J95
     K18P20C KC2018 08 10.92765121 46 47.49 -08 05 34.0          18.5 G EP078J95
     K18P20C KC2018 08 10.93947121 46 59.04 -08 08 14.3          18.8 GVEP078L01
     K18P20C KC2018 08 10.94169721 47 01.57 -08 08 46.6          18.7 GVEP078L01
     K18P20C KC2018 08 10.94482721 47 05.18 -08 09 32.5          19.0 GVEP078L01
     K18P20C KC2018 08 10.94708321 47 07.80 -08 10 05.3          19.1 GVEP078L01
     K18P20C KC2018 08 10.94919021 47 10.19 -08 10 36.2          18.9 GVEP078L01
     K18P20C KC2018 08 10.95151421 47 12.86 -08 11 09.8          19.1 GVEP078L01
     K18P20C KC2018 08 10.96678 21 47 30.73 -08 14 54.2          18.2 RqEP078K51
     K18P20C KC2018 08 10.96928 21 47 33.60 -08 15 30.2          18.2 RqEP078K51
     K18P20C KC2018 08 10.97178 21 47 36.46 -08 16 06.3          18.1 RqEP078K51
     K18P20C KC2018 08 10.97896 21 47 44.85 -08 17 45.1          18.4 GVEP078104
     K18P20C KC2018 08 10.98262 21 47 49.00 -08 18 38.3          18.3 GVEP078104
     K18P20C KC2018 08 10.98679 21 47 53.75 -08 19 38.8          18.3 GVEP078104
     K18P20C KC2018 08 10.98932 21 47 56.69 -08 20 15.1          17.7 RVEP078K63
     K18P20C KC2018 08 10.99098 21 47 58.50 -08 20 39.2          18.0 GVEP078104
     K18P20C KC2018 08 10.99153 21 47 59.21 -08 20 47.2          17.7 RVEP078K63
     K18P20C KC2018 08 10.99333 21 48 01.24 -08 21 13.4          17.8 RVEP078K63
     K18P20C KC2018 08 11.04989 21 49 21.61 -08 29 33.6          18.2 VUEP078I19
     K18P20C KC2018 08 11.07038 21 49 44.97 -08 34 30.5          18.1 VUEP078I19
     K18P20C KC2018 08 11.07271 21 49 47.66 -08 35 04.8          18.5 VUEP078I19
     K18P20C KC2018 08 11.25002 21 53 08.32 -09 21 14.0          18.7 RqEP078850
     K18P20C KC2018 08 11.26409 21 53 23.56 -09 24 28.4          18.5 RqEP078850
     K18P20C KC2018 08 11.27127 21 53 31.33 -09 26 07.4          18.0 RqEP078850
     K18P20C KC2018 08 11.27846 21 53 39.12 -09 27 46.0          18.2 RqEP078850
     K18P20C KC2018 08 11.28609 21 53 47.35 -09 29 31.1          18.2 RqEP078850
     K18P20C KC2018 08 11.29711 21 53 59.29 -09 32 01.8          19.3 RqEP078850
     K18P20C KC2018 08 11.95324 22 06 14.75 -11 54 09.1          17.8 RqEP078K61
     K18P20C KC2018 08 11.95372 22 06 15.28 -11 54 15.5          17.9 RqEP078K61
     K18P20C KC2018 08 11.95490 22 06 16.47 -11 54 30.1          17.9 RqEP078K61
     K18P20C KC2018 08 12.18122 22 10 16.83 -12 38 53.3          18.7 VqEP078W34
     K18P20C KC2018 08 12.18934 22 10 24.61 -12 40 29.1          18.9 VqEP078W34
     K18P20C KC2018 08 12.20424 22 10 38.78 -12 43 24.2          18.9 VqEP078W34
     K18P20C KC2018 08 12.29580022 12 06.22 -13 01 15.0          19.1 VuEP078H21
     K18P20C KC2018 08 12.29816922 12 08.45 -13 01 42.0          19.1 VuEP078H21
     K18P20C  C2018 08 12.54089 22 16 05.26 -13 46 00.2          19.3 cUEP078T05
     K18P20C  C2018 08 12.55167 22 16 14.98 -13 47 56.9          18.9 cUEP078T05
     K18P20C  C2018 08 12.56246 22 16 24.62 -13 49 52.6          19.1 cUEP078T05
     K18P20C  C2018 08 12.57330 22 16 34.36 -13 51 49.0          19.4 cUEP078T05
 
Observer details:
104 San Marcello Pistoiese.  Observers P. Bacci, M. Maestripieri, M. D. Grazia.
    Measurers P. Bacci, L. Tesi, G. Fagioli.  0.6-m f/4.0 reflector + CCD.
850 Cordell-Lorenz Observatory, Sewanee.  Observer D. T. Durig.  0.3-m f/9.4
    Schmidt-Cassegrain + CCD.
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes.  0.61-m f/4.5
    astrograph + CCD.
I19 Observatorio El Gato Gris, Tanti.  Observer C. Colazo.  0.36-m f/10.70
    Schmidt-Cassegrain + CCD.
J95 Great Shefford.  Observer P. Birtwhistle.  0.41-m f/6.3 Schmidt-Cassegrain
    + CCD.
K51 Osservatorio del Celado, Castello Tesino.  Observers M. Campestrin,
    R. Broccato.  Measurer M. Campestrin.  0.80-m f/4 reflector + CCD.
K61 Rokycany Observatory.  Observer M. Adamovsky.  0.51-m f/6.8 reflector
    + CCD.
K63 G. Pascoli Observatory, Castelvecchio Pascoli.  Observer R. Bacci.  0.41-m
    f/3.2 Newtonian reflector + CCD.
L01 Visnjan Observatory, Tican.  Observers K. Korlevic, D. Ivanic, M. Rakitic,
    L. Gelo, J. Minic, F. Hrzenjak, E. Pettarin.  Measurers M. Rakitic,
    J. Minic.  1.0-m f/2.9 reflector + CCD.
T05 ATLAS-HKO, Haleakala.  Observers L. Denneau, H. Flewelling, A. Heinze,
    H. Weiland, J. Tonry.  Measurers L. Denneau, H. Flewelling, A. Heinze,
    J. Tonry, A. Fitzsimmons, D. Young.  0.5-m f/2.0 Schmidt + CCD.
T08 ATLAS-MLO, Mauna Loa.  Observers L. Denneau, H. Flewelling, A. Heinze,
    H. Weiland, J. Tonry.  Measurers L. Denneau, H. Flewelling, A. Heinze,
    J. Tonry, A. Fitzsimmons, D. Young.  0.5-m f/2.0 Schmidt + CCD.
W34 Squirrel Valley Observatory, Columbus.  Observer R. L. Flynn.  0.20-m f/10
    Schmidt-Cassegrain + CCD + f/7.0 focal reducer.
 
Orbital elements:
2018 PC20                                                Earth MOID = 0.0282 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5                 MPC
M 307.89165              (2000.0)            P               Q
n   0.44130717     Peri.  153.39441     +0.39013376     +0.91514063
a   1.7086065      Node   139.34666     -0.87011683     +0.40250109
e   0.4041053      Incl.    8.96797     -0.30115170     +0.02259418
P   2.23           H   25.3           G   0.15           U   6
Residuals in seconds of arc
180810 T08  0.4+  0.2+    180810 K51  0.3+  0.1-    180811 850  0.5-  0.0
180810 T08  0.2-  0.7-    180810 K51  0.4+  0.1+    180811 850  0.0   0.1+
180810 T08  0.5+  0.3-    180810 104  0.2+  0.1+    180811 K61  0.1+  0.7+
180810 T08  0.1-  0.2+    180810 104  0.0   0.1-    180811 K61  0.8+  0.1+
180810 T08  0.1+  0.3+    180810 104  0.1+  0.3-    180811 K61  1.0+  0.0
180810 T08  0.6-  0.8+    180810 K63  0.0   0.0     180812 W34  0.1+  0.3+
180810 J95  0.2-  0.0     180810 104  0.1-  0.1-    180812 W34  0.3+  0.3+
180810 J95  0.0   0.0     180810 K63  0.1+  0.2-    180812 W34  0.1-  0.5+
180810 J95  0.1-  0.1+    180810 K63  0.1-  0.4-    180812 H21  0.1-  0.1+
180810 L01  0.0   0.1-    180811 I19  0.8+  0.4+    180812 H21  0.0   0.2+
180810 L01  0.4-  0.1+    180811 I19  0.3-  0.3-    180812 T05  0.2-  0.1-
180810 L01  0.1-  0.1-    180811 I19  0.3+  1.0-    180812 T05  0.4+  0.5-
180810 L01  0.4+  0.0     180811 850  0.1-  0.2+    180812 T05  0.5-  0.3-
180810 L01  0.0   0.1-    180811 850  0.4-  0.2+    180812 T05  0.9-  0.6-
180810 L01  0.2+  0.1+    180811 850  0.4-  0.1+
180810 K51  0.1+  0.4-    180811 850  0.2-  0.4+

Ephemeris:
2018 PC20                a,e,i = 1.71, 0.40, 9                   q = 1.0181
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2018 07 13    14 34 32.4 +38 28 22   0.1146  1.0203    88.6    84.9    23.6
...
2018 07 28    16 06 50.7 +37 59 14   0.05373 1.0228    96.3    80.7    21.8
...
2018 08 05    19 03 58.8 +22 39 36   0.02991 1.0345   131.3    47.5    19.5
...
2018 08 11    21 48 08.4 -08 19 17   0.03456 1.0477   170.4     9.2    18.7
2018 08 12    22 07 00.8 -12 00 02   0.03742 1.0503   169.5    10.1    18.9
2018 08 13    22 23 25.4 -15 04 03   0.04064 1.0529   167.0    12.5    19.2
...
2018 08 19    23 25 22.1 -25 09 47   0.06438 1.0708   154.8    23.7    20.6
...
2018 08 27    23 59 28.7 -29 33 26   0.1012  1.0993   150.1    27.3    21.8
...
2018 09 11    00 16 59.6 -31 02 45   0.1786  1.1650   150.0    25.6    23.1

A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-P78



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