Introduction4 Data acquisition and analysis8 Results17 Conclusion24 ASTEROID PHOTOMETRY GROUP, VSA 2011 2.

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Presentation transcript:

Introduction4 Data acquisition and analysis8 Results17 Conclusion24 ASTEROID PHOTOMETRY GROUP, VSA

MAIN GOALS: determination of asteroids’ physical characteristics - rotation periods and shapes SIDE GOALS : using a remote telescope observation planning and candidate selection CCD imaging techniques and image reduction dynamics of minor bodies of the Solar system astrometry of comets and reporting to the MPC familiarising with the southern sky 3 ASTEROID PHOTOMETRY GROUP, VSA 2011 Messier 8, 150 sec RGB composite, , San Pedro de Atacama

asteriods - small celestial bodies that are orbiting around the Sun asteroid belt – between Mars and Jupiter ASTEROID PHOTOMETRY GROUP, VSA

divided in about 35 groups by differences in their orbits NEO (Near Earth Object) MBA (Main Belt Asteroid) Trojans Hildas TNO … ASTEROID PHOTOMETRY GROUP, VSA

ASTROMETRY = precise measurements of the positions and movements of celestial bodies PHOTOMETRY = measuring luminous intensity using photometry we can find out shape of the asteroid, rotation period and constitution ASTEROID PHOTOMETRY GROUP, VSA

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online database of all minor bodies of the Solar system it is used for reporting new asteroid data and contains all orbital informations about known objects in our Solar system ASTEROID PHOTOMETRY GROUP, VSA

11 San Pedro de Atacama Instrument: ASH2 D = 407 mm F = 1510 mm, f/3,7 Mount: AP1200 CCD: STL11000XMC1 Field of view: ~ 1º×1,5º Site: San Pedro de Atacama, Chile Distance from Višnjan: ~11300 km Instrument: ASH2 D = 407 mm F = 1510 mm, f/3,7 Mount: AP1200 CCD: STL11000XMC1 Field of view: ~ 1º×1,5º Site: San Pedro de Atacama, Chile Distance from Višnjan: ~11300 km

ASTEROID PHOTOMETRY GROUP, VSA

ASTEROID PHOTOMETRY GROUP, VSA

ASTEROID PHOTOMETRY GROUP, VSA reduced frame dark frame raw frame flat field

ASTEROID PHOTOMETRY GROUP, VSA

ASTEROID PHOTOMETRY GROUP, VSA

ASTEROID PHOTOMETRY GROUP, VSA Aug 10/11/17, 2011 Period: 3,39 ± 0,01h Magnitude change Synodic phase

ASTEROID PHOTOMETRY GROUP, VSA Synodic phase Aug 10/11/12, 2011 Period: ± 0.77 h Magnitude change

ASTEROID PHOTOMETRY GROUP, VSA Aug 11/12/13/ Period: 16,31 ± 0,54 h Magnitude change Synodic phase

ASTEROID PHOTOMETRY GROUP, VSA Jul 25/26/28, 2011 Jul 25/26/28, 2011 Period: 16.3 ± 0.1h Period: 16.3 ± 0.1h Synodic phaseMagnitude change

ASTEROID PHOTOMETRY GROUP, VSA P/Van Ness

ASTEROID PHOTOMETRY GROUP, VSA 2011

observed for 7 clear nights effective exposure time: s = 154,5 min = 25,7 h total amount data: 29,5 GB = 1027 images made light curves and determined rotation periods of 4 asteroids done astrometry of 3 asteroids and 1 comet ASTEROID PHOTOMETRY GROUP, VSA

We have learned about asteroids controling the telescope remotely photometric and astrometric analysing the data We have succeeded to determine the rotation period of asteroids The moon was the main problem of our observing !!! ASTEROID PHOTOMETRY GROUP, VSA

ASTEROID PHOTOMETRY GROUP, VSA CONTACTS: Danko Marušić – Stefan Cikota – Rajna Racz – Klaudija Molnar – Mateja Šola - Vasilije Perović – FINAL PRESENTATION ON VSA VISNJAN

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