• Processing (Info)

    • MPEC 2018-A32 : 2018 AU

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    M.P.E.C. 2018-A32                                Issued 2018 Jan.  9, 17:34 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 AU

Observations:
     K18A00U* C2018 01 05.24475 03 15 56.747+06 32 14.79         21.6 wUEA032F51
     K18A00U  C2018 01 05.25611 03 15 59.823+06 32 45.03         21.6 wUEA032F51
     K18A00U  C2018 01 05.26744 03 16 02.866+06 33 15.05         21.8 wUEA032F51
     K18A00U  C2018 01 05.27880 03 16 05.943+06 33 45.08         21.6 wUEA032F51
     K18A00U  C2018 01 06.11939303 20 07.36 +07 10 47.5          20.6 GUEA032H01
     K18A00U  C2018 01 06.12663103 20 09.36 +07 11 06.7          21.5 GUEA032H01
     K18A00U  C2018 01 06.13605703 20 11.95 +07 11 31.7          21.5 GUEA032H01
     K18A00U  C2018 01 06.14009203 20 13.05 +07 11 42.4          21.0 GUEA032H01
     K18A00U KC2018 01 07.07170903 24 43.36 +07 52 49.0          21.6 VuEA032H21
     K18A00U KC2018 01 07.08227703 24 46.30 +07 53 17.2          21.8 VuEA032H21
     K18A00U KC2018 01 07.09405303 24 49.60 +07 53 48.4          21.5 VuEA032H21
     K18A00U  C2018 01 08.12517 03 29 52.31 +08 39 18.6                UEA032I52
     K18A00U  C2018 01 08.12848 03 29 53.24 +08 39 27.1          21.6 GUEA032I52
     K18A00U  C2018 01 08.13179 03 29 54.16 +08 39 35.0          22.1 GUEA032I52
     K18A00U  C2018 01 08.13510 03 29 55.15 +08 39 44.7                UEA032I52

Observer details:
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.
H01 Magdalena Ridge Observatory, Socorro.  Observers W. H. Ryan, E. V. Ryan.
    Measurer W. H. Ryan.  2.4-m f/8.9 reflector + 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.
I52 Steward Observatory, Mt. Lemmon Station.  Observer R. A. Kowalski.
    Measurers E. J. Christensen, D. C. Fuls, A. R. Gibbs, A. D. Grauer,
    J. A. Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard, R. G. Matheny,
    R. L. Seaman, F. C. Shelly.  1.0-m reflector + CCD.

Orbital elements:
2018 AU                                                  Earth MOID = 0.1417 AU
Epoch 2017 Sept. 4.0 TT = JDT 2458000.5                 MPC
M 332.99955              (2000.0)            P               Q
n   0.24331732     Peri.  318.79788     +0.13377554     -0.98861464
a   2.5410938      Node   123.40586     +0.92948832     +0.10105711
e   0.5617546      Incl.    4.73332     +0.34373765     +0.11148342
P   4.05           H   22.7           G   0.15           U   6
Residuals in seconds of arc
180105 F51  0.5-  0.1-    180106 H01  0.4-  0.0     180107 H21  0.4-  0.0
180105 F51  0.4-  0.0     180106 H01  0.4-  0.0     180108 I52  0.8-  0.2+
180105 F51  0.6-  0.1-    180106 H01  0.5-  0.1-    180108 I52  0.9-  0.0
180105 F51  0.5-  0.2-    180107 H21  0.5-  0.2-    180108 I52  1.0-  0.9-
180106 H01  0.5-  0.0     180107 H21  0.7-  0.0     180108 I52  0.1-  0.1+

Ephemeris:
2018 AU                  a,e,i = 2.54, 0.56, 5                   q = 1.1136
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2017 12 10    01 39 56.1 -09 20 09   0.2440  1.1266   119.9    49.3    21.7
...
2017 12 25    02 27 08.4 -01 23 27   0.2272  1.1137   119.7    50.1    21.6
...
2018 01 02    03 00 51.2 +04 09 36   0.2259  1.1191   121.9    48.3    21.5
...
2018 01 08    03 29 14.9 +08 34 01   0.2301  1.1286   124.1    46.2    21.5
2018 01 09    03 34 10.7 +09 17 53   0.2313  1.1306   124.5    45.8    21.5
2018 01 10    03 39 09.2 +10 01 28   0.2327  1.1328   124.9    45.4    21.5
...
2018 01 16    04 09 42.4 +14 11 53   0.2443  1.1483   127.3    43.0    21.6
...
2018 01 24    04 50 55.8 +18 56 44   0.2693  1.1754   129.9    40.0    21.8
...
2018 02 08    06 02 32.0 +24 29 43   0.3455  1.2432   131.7    36.4    22.3

A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-A32

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