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Keplerlaan 1, Postbus 299 2200 AG Noordwijk, The Netherlands Detlef.Koschny@esa.int + Astronomical Institute Utrecht, Pr

Meteor Research in the Research and Scientific Support Department (RSSD) of ESA D. Koschny, F. Bettonvil, H. Svedhem, J. Mc Auliffe, M. Gritsevich, H. Smit, C. Erd, C. v. d. Luijt. Keplerlaan 1, Postbus 299 2200 AG Noordwijk, The Netherlands Detlef.Koschny@esa.int

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Keplerlaan 1, Postbus 299 2200 AG Noordwijk, The Netherlands Detlef.Koschny@esa.int + Astronomical Institute Utrecht, Pr

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  1. Meteor Research in the Research and Scientific Support Department (RSSD) of ESAD. Koschny, F. Bettonvil, H. Svedhem, J. Mc Auliffe, M. Gritsevich,H. Smit, C. Erd, C. v. d. Luijt Keplerlaan 1, Postbus 2992200 AG Noordwijk, The Netherlands Detlef.Koschny@esa.int + Astronomical Institute Utrecht, Princetonplein 5, 3584 CC Utrecht CamerasStatus SILBOThe Virtual Meteor Observatory (VMO) Recent research – ATV, Perseid campaign, impact light, ablation models… MOD WS #03 - MET-RSSD-HO-057/1.0, 14 Apr 2010

  2. Introduction - 2 • Why are we interested in meteors? • Dust particles from comets/asteroids enter Earth’s atmosphere -> meteor • Counts vs. brightness -> particle flux vs. size • Light curves -> physical properties • Spectra -> chemical properties • Orbit -> parent object • Determining meteoroid properties allows constraining the propertiesof the parent object – ‘Meteor observations are a poor man’scomet mission’ UMi Perseid meteor 12/13 Aug 2009recorded with LIC1, Kanzelhohe, Austria Mg 518 Na 589 Star spectrum O 777 Zero order SPOSH image, Quadrantids 2008, with objective grating MOD WS #03 - MET-RSSD-HO-057/1.0, 14 Apr 2010

  3. Cameras • Different intensified cameras • Currently in use for IMO network: LIC4, intensified with XX1332 intensifiers + currently with Zeiss Planar 50 mm lens • Watec 120N (mainly used for s/w testing) MOD WS #03 - MET-RSSD-HO-057/1.0, 14 Apr 2010

  4. Status SILBO (*) Scientific goals • (a) To study physical and chemical properties of the meteoroids, and, taking into account the modifications of the meteoroid properties during their flight in the solar system, constrain the physical and chemical properties of their parent body. • (b) To study the variability of the background dust flux in the Earth environment during a complete year. How is it done? • Orbit determination • Lightcurves • Spectra (*): SILBO = Spanish Island Long Baseline Observatory MOD WS #03 - MET-RSSD-HO-057/1.0, 14 Apr 2010

  5. Status SILBO - 2 Automatic roll-off roof(Pier-Tech) • Produced automation software • Supported MetRec port to Windows • Currently setting up hardware MOD WS #03 - MET-RSSD-HO-057/1.0, 14 Apr 2010

  6. Virtual Meteor Observatory (VMO) • See http://vmo.imo.net MOD WS #03 - MET-RSSD-HO-057/1.0, 14 Apr 2010

  7. Recent research - ATV • Two of our cameras were used from airplanes to observe the ATV reentry in Sep 2008 • Allowed us to validate our meteor trajectory code ATV breaking apart. The vertical dots are reflections in the window – the trail to the right are real fragments! Jonathan + Christina Giannopapa (TEC) The DC8 airplane in which Jonathan flew The SPOSH camera head MOD WS #03 - MET-RSSD-HO-057/1.0, 14 Apr 2010

  8. ATV - 2 Reference height ( derived fromGPS data) MOD WS #03 - MET-RSSD-HO-057/1.0, 14 Apr 2010

  9. Still dreaming of a meteor camera in space SPOSH image, 120 deg FoV, -6 mag Perseid, 12 Aug 2009, 23h36m16s UTC • SPOSH (Smart Panoramic Camera Head) was developed under ESA contract to demonstrate a space-based ‘night-time imager’ • An IR version was developed • Still trying to find a flightopportunity Hakan Svedhem setting up the SPOSH-IR camera. MOD WS #03 - MET-RSSD-HO-057/1.0, 14 Apr 2010

  10. Recent research – impact light • Meteoroids hitting the Moon will generate a light flash • Observable size range from ground or space-based camera: cm to meters – not covered well by other methods -> interesting! • We have simulated the emitted light and estimate the number of flashes visible for a givencamera • Result: Using a SPOSH-typecamera from lunar orbit (asproposed for a German lunarmission) would allow seeing1 to 10 events per hour MOD WS #03 - MET-RSSD-HO-057/1.0, 14 Apr 2010

  11. Maria’s work on ablation models • An analytical model was produced to compute the path of a meteoroid in the Earth’s atmosphere • Some free parameters can be determined by comparing it with observations • This allows predictionof the end mass of theobject and therecoverable meteoritemass on ground □Příbram ●Lost City ○Innisfree MOD WS #03 - MET-RSSD-HO-057/1.0, 14 Apr 2010

  12. Check out http://www.rssd.esa.int/meteors MOD WS #03 - MET-RSSD-HO-057/1.0, 14 Apr 2010

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