• Processing (Info)

    • MPEC 2018-A71 : 2018 AF3

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    M.P.E.C. 2018-A71                                Issued 2018 Jan. 14, 20:41 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@CFA.HARVARD.EDU
            URL https://www.minorplanetcenter.net/    ISSN 1523-6714

                                   2018 AF3

Observations:
     K18A03F* C2018 01 10.44956 08 53 33.486+07 43 03.83         21.7 wUEA071F51
     K18A03F  C2018 01 10.46370 08 53 32.292+07 43 21.91         22.0 wUEA071F51
     K18A03F  C2018 01 10.49201 08 53 29.884+07 43 58.00         21.8 wUEA071F51
     K18A03F KC2018 01 12.36791 08 51 03.42 +08 25 02.3          22.1 RoEA071291
     K18A03F KC2018 01 12.37668 08 51 02.68 +08 25 14.2          21.2 RoEA071291
     K18A03F  C2018 01 12.56682 08 50 46.359+08 29 38.00         21.8 wUEA071F51
     K18A03F  C2018 01 12.58023 08 50 45.124+08 29 56.31         22.3 wUEA071F51
     K18A03F KC2018 01 13.34489 08 49 42.02 +08 47 32.7                oEA071711
     K18A03F KC2018 01 13.34869 08 49 41.67 +08 47 37.9                oEA071711
     K18A03F KC2018 01 13.35255 08 49 41.30 +08 47 43.4                oEA071711
     K18A03F KC2018 01 13.39792 08 49 37.19 +08 48 46.0                oEA071691
     K18A03F KC2018 01 13.40724 08 49 36.35 +08 48 58.9                oEA071691
     K18A03F KC2018 01 13.41659 08 49 35.42 +08 49 11.8                oEA071691
     K18A03F KC2018 01 14.33414 08 48 16.25 +09 11 00.9                oEA071711
     K18A03F KC2018 01 14.33866 08 48 15.82 +09 11 07.4                oEA071711
     K18A03F KC2018 01 14.34303 08 48 15.40 +09 11 14.2                oEA071711
     K18A03F KC2018 01 14.39616 08 48 10.35 +09 12 30.0                oEA071691
     K18A03F KC2018 01 14.40945 08 48 09.04 +09 12 49.2                oEA071691
     K18A03F KC2018 01 14.42274 08 48 07.74 +09 13 08.2                oEA071691

Observer details:
291 LPL/Spacewatch II.  Observer R. A. Mastaler.  1.8-m f/2.7 reflector + CCD.
691 Steward Observatory, Kitt Peak.  Observer M. T. Read.  0.9-m f/3 reflector
    + CCD.
711 McDonald Observatory.  Observer J. G. Ries.  2.1-m reflector + CCD + focal
    reducer.
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. Lilly, E. Magnier, R. Wainscoat, C. Waters, R. Weryk.  1.8-m
    Ritchey-Chretien + CCD.

Orbital elements:
2018 AF3                                                 Earth MOID = 0.1107 AU
Epoch 2017 Sept. 4.0 TT = JDT 2458000.5                 MPC
M  74.84293              (2000.0)            P               Q
n   0.74469081     Peri.  170.29576     +0.55818986     +0.82403949
a   1.2054579      Node   133.55928     -0.76992892     +0.55794102
e   0.0669483      Incl.    7.68175     -0.30924673     +0.09828902
P   1.32           H   22.8           G   0.15           U   8
Residuals in seconds of arc
180110 F51  0.0   0.0     180113 711  0.2-  0.5+    180114 711  0.1+  0.1-
180110 F51  0.0   0.0     180113 711  0.1-  0.4+    180114 711  0.3+  0.3+
180110 F51  0.0   0.0     180113 711  0.1-  0.5+    180114 691  0.1-  0.0
180112 291  0.3-  0.1+    180113 691  0.2-  0.0     180114 691  0.1-  0.0
180112 291  0.6+  0.1+    180113 691  0.5+  0.1-    180114 691  0.0   0.2-
180112 F51  0.0   0.1-    180113 691  0.2-  0.3-
180112 F51  0.0   0.0     180114 711  0.1-  0.1-

Ephemeris:
2018 AF3                 a,e,i = 1.21, 0.07, 8                   q = 1.1248
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2017 12 15    09 02 54.0 +02 54 34   0.4285  1.2771   124.5    39.4    23.1
...
2017 12 30    09 03 16.9 +04 33 54   0.3633  1.2827   139.9    29.6    22.4
...
2018 01 07    08 57 25.6 +06 34 53   0.3355  1.2846   149.9    22.6    22.1
...
2018 01 13    08 50 11.2 +08 39 40   0.3193  1.2855   158.2    16.5    21.8
2018 01 14    08 48 45.6 +09 03 09   0.3171  1.2856   159.6    15.4    21.7
2018 01 15    08 47 16.6 +09 27 21   0.3150  1.2857   161.1    14.3    21.6
...
2018 01 21    08 37 21.0 +12 05 29   0.3056  1.2861   169.9     7.7    21.3
...
2018 01 29    08 22 31.9 +15 57 25   0.3022  1.2859   174.3     4.4    21.1
...
2018 02 13    07 57 40.0 +22 47 43   0.3232  1.2835   152.9    20.5    21.9

A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-A71

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