2015-01-20 3h46 to 4h4
(702) Alauda
Occulted star mag 11.3 V
Overview
- 2014-11-17 : Create prediction page
- 2014-11-24 : New orbit Model based on Period of observations = 865.4 days or 216.3 revolutions, last AO observation : 2009-12-07, uncertainty on vector Primary-satellite : 31 mas during period of the observations (2007 to 2009)
Prediction for (702) Alauda
- Download the Google Earth File KMZ
- green line is the central line of (702) Alauda
- blue lines show the estimate size of (702) Alauda
- red lines the 1-sigma error for the path
- white lines show Pichi Unem
Prediction for (702) Alauda and Pichi Unem (wide views)
Ephemeris
Ephemeris from Miriade for the date of occultation and geocenter frame. For more specific ephemeris please use the documentation of Miriade.
Geometry for the (702) Alauda system
- Red circle show the position of the satellite at the occultation date.
- The white dots show next positions during almost a period
| Pichi Unem |
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Propagation of the solutions
Last observation of Pichi Unem was in 2009, and the uncertainty on current position can reach 380 km. For this graph, Y axis are North celestial pole Equatorial J2000 and X on West. the shadow path move to the bottom.- Center at coordinates 0,0 is Alauda
- 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
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Contents
- Orbital solution fitted by Genoid project (Vachier F., Berthier J. & Carry B.) IMCCE/CNRS
- Ephemeris has made available with Miriade Project (Berthier J. & Vachier F.) IMCCE/CNRS
- Occultation Prediction by Vachier F. using Occult 4.1.3.0 (Occultation Prediction Software by D.Herald)
- Ephemeris and offset based on ASTORB (Edward Bowell)