Monday 26th of June 2017 ~ 21:01:42 UTC (624) Hektor occult 4UC 247-175146(mag 12.4)


  • Download the Google Earth File KMZ
  • green line is the central line of (624) Hektor
  • blue lines show the estimate size of (624) Hektor
  • red lines the 1-sigma error for the path
  • white lines show S/2006 (624) 1

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event.2017-06-26.624_Hektor.prediction.2016-07-27

Event
  • Max duration : 14.5 seconds
  • Mag drop : 2.2
  • Shadow velocity : 15.9 km/s
  • Ingress Earth : 2017-06-26 20h55
  • Egress Earth  : 2017-06-26 21h08
  • Moon illumination : 11%
  • Moon phase : Evening crescent
Asteroidal system
  • Name : (624) Hektor
  • Mag : 14.5
  • Asteroid Diameter : 231 km
  • Geocentric distance : 4.360 AU
  • Number of satellite : 1
  • Satellite : S/2006 (624) 1
  • Diameter : 12 km
  • Max duration : 0.8 sec
Occulted Star
  • Name : 4UC 247-175146
  • Used RA   :   19:33:30.6416 J2000
  • Used DEC : -40:47:13.394 J2000
  • Mv : 12.4
  • VizieR - Aladin
Historic
  • 2016-07-27 : Create prediction
Prediction for (624) Hektor and S/2006 (624) 1 (wide views)

Hektor

Hektor

S/2006 (624) 1

S/2006 (624) 1

Ephemerides from IMCCE

Ephemeris for (624) Hektor

Ephemeris for S/2006 (624) 1

Ephemeris from Miriade for the date of occultation and geocenter frame. For more specific ephemeris please use the documentation of Miriade.

Orbitography for the (624) Hektor system

S/2006 (624) 1

S/2006 (624) 1

Astrometric observations centered on (624) Hektor.
Dot represents one observed position. The vector shows ephemeris position from observed position.

S/2006 (624) 1

S/2006 (624) 1

Geometry of orbit for the (624) Hektor system view from Earth
  • Cyan circle show the position of the satellite S/2006 (624) 1 at the occultation date.
  • The black dots show next positions during almost a period
  • In the center, (624) Hektor represented by an ellipsoid
  • Propagation of the solutions
    We use all orbits from 1,2 and 3 sigma issued from Genetical algorithm, and we see where the satellite is for the occultation date. North on top, and East on right.
    • Center at coordinates 0,0 is Primary
    • Black dots show the orbit with the best solution at the date of occultation
    • Green zone show orbits covering 1-sigma error
    • Blue zone for 2-sigma
    • Red zone for 3-sigma

    S2006-624-1

    S2006-624-1
    This figure represent 1742698 orbits computed to the occultation date. Each orbit is classify throw its performance, given an accuracy in kilometer :
    • 1-σ error = 285 km
    • 2-σ error = 314 km
    • 3-σ error = 410 km
    Contents
    • Orbital solution fitted by Genoid project (Vachier F., Berthier J., Carry B. & Pajuelo M.) IMCCE/CNRS
    • Ephemeris has made available with Miriade Project (Berthier J. & Vachier F.) IMCCE/CNRS
    • Occultation Prediction by Vachier F. using Occult (Occultation Prediction Software by D.Herald)
    • Ephemeris and offset based on ASTORB (Edward Bowell)