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    • MPEC 2019-H17 : 2017 FL91

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    Read MPEC 2019-H16 Read MPEC 2019-H18 

    M.P.E.C. 2019-H17                                Issued 2019 Apr. 18, 23:39 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

                                   2017 FL91

                          Revision to MPEC 2017-F153

Additional Observations:
     K17F91L  C2006 04 19.21841 12 01 56.60 -00 26 41.9          20.1 VrEH017G96
     K17F91L  C2006 04 19.22961 12 01 55.38 -00 27 05.5          20.1 VrEH017G96
     K17F91L  C2006 04 19.24081 12 01 54.19 -00 27 29.3          19.9 VrEH017G96
     K17F91L  C2006 04 19.25207 12 01 52.96 -00 27 52.9          20.0 VrEH017G96
     K17F91L  C2017 01 31.48800211 54 20.555+30 23 07.74         22.2 GVEH017F51
     K17F91L  C2017 01 31.49915611 54 20.510+30 23 13.05         22.1 GVEH017F51
     K17F91L  C2017 01 31.51039111 54 20.475+30 23 18.18         22.4 GVEH017F51
     K17F91L  C2017 02 18.44108911 44 54.063+32 30 20.86         21.8 GVEH017F51
     K17F91L  C2017 02 19.42226611 43 46.645+32 35 39.88         21.8 GVEH017F51
     K17F91L  C2017 02 20.59124211 42 20.095+32 41 33.59         20.9 GVEH017F51
     K17F91L  C2017 02 20.62080811 42 17.702+32 41 41.18         21.8 GVEH017F51
     K17F91L  C2017 02 20.63209811 42 16.775+32 41 44.03         21.5 GVEH017F51
     K17F91L  C2017 02 20.64335011 42 15.868+32 41 46.49         21.6 GVEH017F51
     K17F91L  C2017 02 23.40077611 38 34.743+32 53 24.88         21.7 GVEH017F51
     K17F91L  C2017 02 23.41192811 38 33.735+32 53 27.91         21.5 GVEH017F51
     K17F91L  C2017 02 23.42339111 38 32.671+32 53 30.64         22.1 GVEH017F51
     K17F91L  C2017 02 23.43527511 38 31.577+32 53 33.41         21.6 GVEH017F51
     K17F91L  C2017 03 06.39212211 19 44.969+32 56 22.18         21.4 GVEH017F51
     K17F91L  C2017 03 06.40356411 19 43.553+32 56 19.49         20.8 GVEH017F51
     K17F91L  C2017 03 15.43527311 01 42.527+31 49 11.68         21.2 GVEH017F51
     K17F91L  C2017 03 15.44747111 01 40.953+31 49 03.34         21.3 GVEH017F51
     K17F91L  C2017 03 15.45972211 01 39.372+31 48 54.69         21.3 GVEH017F51
     K17F91L  C2017 03 15.47199011 01 37.833+31 48 46.10         21.1 GVEH017F51
     K17F91L  C2017 03 30.26551310 35 34.780+27 29 08.03         21.1 GVEH017F51
     K17F91L  C2017 04 16.35499110 21 26.231+19 43 21.88         21.4 GVEH017F51
     K17F91L  C2017 04 16.36723610 21 25.966+19 42 59.50         21.3 GVEH017F51
     K17F91L  C2017 04 16.37949410 21 25.706+19 42 37.55         21.2 GVEH017F51
     K17F91L  C2017 04 16.39175710 21 25.487+19 42 15.12         21.7 GVEH017F51
     K17F91L  C2018 12 12.51667807 30 28.244+46 45 16.43         23.6 GVEH017F51
     K17F91L  C2018 12 12.53022807 30 27.270+46 45 26.72         24.0 GVEH017F51
     K17F91L  C2018 12 12.55731207 30 25.182+46 45 47.96         24.5 GVEH017F51
     K17F91L  C2019 01 03.45798806 51 06.462+50 21 04.04         23.2 GVEH017F51
     K17F91L  C2019 01 03.47088606 51 04.708+50 21 07.17         23.4 GVEH017F51
     K17F91L  C2019 01 04.45093706 48 53.058+50 25 41.28         21.6 GVEH017F51
     K17F91L  C2019 01 12.41219506 31 03.629+50 41 46.68         21.8 GVEH017F51
     K17F91L  C2019 01 12.43859806 31 00.118+50 41 45.49         23.4 GVEH017F51
     K17F91L  C2019 01 12.45184706 30 58.251+50 41 45.17               VEH017F51

Observer details:
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, K. Chambers, T. Lowe,
    E. Magnier, A. Schultz, M. Willman.  Measurers S. Chastel, M. Huber,
    Y. Ramanjooloo, R. Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
G96 Mt. Lemmon Survey.  Observer R. A. Kowalski.  Measurers E. C. Beshore,
    E. J. Christensen, G. J. Garradd, A. R. Gibbs, A. D. Grauer, R. E. Hill,
    R. A. Kowalski, S. M. Larson, R. H. McNaught.  1.5-m reflector + CCD.

Orbital elements:
2017 FL91                                                Earth MOID = 0.2758 AU
Epoch 2019 Apr. 27.0 TT = JDT 2458600.5                 MPC
M 303.41482              (2000.0)            P               Q
n   0.44618273     Peri.  211.43816     -0.60395356     +0.79198958
a   1.6961368      Node    21.81637     -0.67222268     -0.44590866
e   0.2554523      Incl.   13.91980     -0.42820178     -0.41703473
P   2.21           H   20.9           G   0.15           U   4
From 48 observations 2017 Mar. 23-Apr. 28, mean residual 0".34.

Ephemeris:
2017 FL91                a,e,i = 1.70, 0.26, 14                  q = 1.2629
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2019 03 19    06 15 53.5 +40 59 52   1.2756  1.6857    95.1    36.0    24.0
...
2019 04 03    06 41 55.5 +38 17 34   1.3651  1.6342    86.0    37.6    24.2
...
2019 04 11    06 58 02.5 +36 46 27   1.4100  1.6064    81.6    38.1    24.2
...
2019 04 17    07 10 54.2 +35 34 47   1.4420  1.5855    78.6    38.4    24.2
2019 04 18    07 13 06.1 +35 22 30   1.4471  1.5820    78.1    38.4    24.2
2019 04 19    07 15 18.8 +35 10 07   1.4522  1.5785    77.6    38.4    24.2
...
2019 04 25    07 28 51.6 +33 53 30   1.4820  1.5576    74.8    38.5    24.3
...
2019 05 03    07 47 33.4 +32 04 30   1.5190  1.5298    71.3    38.6    24.3
...
2019 05 18    08 24 01.7 +28 15 55   1.5799  1.4787    65.4    38.4    24.3

A. U. Tomatic                (C) Copyright 2019 MPC           M.P.E.C. 2019-H17

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