Tuesday 8th of November 2016 ~ 03:34:47 UTC (22) Kalliope occult 4U 594-35744(mag 9.6)


  • Download the Google Earth File KMZ
  • green line is the central line of (22) Kalliope
  • blue lines show the estimate size of (22) Kalliope
  • red lines the 1-sigma error for the path
  • white lines show Linus

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event.2016-11-08.22_Kalliope.prediction.2016-11-04

event.2016-11-08.22_Kalliope.prediction.2016-10-06

Event
  • Max duration : 26.8 seconds
  • Mag drop : 1.4
  • Shadow velocity : 6.2 km/s
  • Ingress Earth : 2016-11-08 3h18
  • Egress Earth  : 2016-11-08 3h52
  • Moon illumination : 53%
  • Moon phase : First quarter
Asteroidal system
  • Name : (22) Kalliope
  • Mag : 10.9
  • Asteroid Diameter : 167 km
  • Geocentric distance : 1.962 AU
  • Number of satellite : 1
  • Satellite : Linus
  • Diameter : 28 km
  • Max duration : 4.5 sec
Occulted Star
  • Name : 4U 594-35744
  • Used RA   :   06:55:42.3930 J2000
  • Used DEC : +28:38:39.272 J2000
  • Mv : 9.6
  • VizieR - Aladin
Historic
  • 2015-06-30 : Create prediction
  • 2016-10-06 : Update prediction
  • 2016-11-04 : Update
Prediction for (22) Kalliope and Linus (wide views)

Kalliope

Kalliope

Kalliope

Kalliope

Linus

Linus

Linus

Linus
Ephemerides from IMCCE

Ephemeris for (22) Kalliope

Ephemeris for Linus

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

Orbitography for the (22) Kalliope system

Linus

Linus

Astrometric observations centered on (22) Kalliope.
Dot represents one observed position. The vector shows ephemeris position from observed position.

Linus

Linus

Geometry of orbit for the (22) Kalliope system view from Earth
  • Cyan circle show the position of the satellite Linus at the occultation date.
  • The black dots show next positions during almost a period
  • In the center, (22) Kalliope 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

    Linus

    Linus
    This figure represent 1997144 orbits computed to the occultation date. Each orbit is classify throw its performance, given an accuracy in kilometer :
    • 1-σ error = 113 km
    • 2-σ error = 121 km
    • 3-σ error = 133 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)