![]() ![]() Among those discovered at Farra Observatory the first numbered, (6501), has become "Isonzo" to represent all those contribute made possible the birth and the growth of CCAF. In this case all takes place after years from first observation when the new orbit becames paricularly stable (well determined). Another unusual astreoid is 1996 AX1, with a particular eccentric orbit, while (9431) e (13387) are two Trojans, minor planets that move synchronous before or after Jupiter in particular stable balance points (Lagrangian).Īs often happens in many scientific field asteoird discoverers are allowed to give a nomination to the object discovered. Among these, 1997 AQ18 is the first and only NEO discovered in Italy in the Apollo class, objects considered very dangerous for the Earth. To discover and monitor continuously all asteroids non-professional astronomers all around the world are necessary.ĬCAF, involved in this field from more than 10 years, contributed with the identification (discovery) of more than 140 new asteroids. The discovery and control of this kind of objects, for scientists NEOs (Near Earth Objects), is very important due to the catastrophic chain of events in the terrestrial byosphere inducted by the impact with Earth of a body of only less than a mile in diameter. Nowaday almost two thousand asteroids are found "able" to cross terrestrial orbit and thus potentially dangerous for us. Minor planets are studied to know their number, their physical properties, their spatial distribution, to understand how ana when they are born (first stages of the evolution of our Solar system), to evaluete the probabilities and possibilities of collision with our Earth. Physicist estimate that this belt contains some hundred of thousand asteroids, but we know with precision the orbit of only twenty thousend of them. The majority is turning aroun the Sun in a belt between the orbits of Mars and Jupiter, distant more than one hundred million of miles from Earth. ![]() Why to follow with difficulty these small object that seem so meaningless ?Īsteroids, or minor planets, are irregular shape celestial bodies with dimensions that only for the few geatests of them can reach hundred of miles. Applied to the comets and asteroids becames Solar system Minor bodies Astrometry. 44.Astrometry is that part of Astronomy that takes care of meausuring the position of all celestial bodies in the sky. Zacharias N, Finch CT, Girard TM, Henden A, Bartlett JL, Monet DG, Zacharias MI (2013) The fourth US Naval Observatory CCD astrograph catalog (UCAC4). Warner BD, Stephens RD, Harris AW (2011) Save the light curves. Walsh K, Delbo M, Bottke W, Vokrouhlicky D, Lauretta D (2013) Introducing the Eulalia and New Polana asteroid families: re-assessing primitive asteroid families in the inner Main Belt, Icarus 225, 283–297. Astrophysics Source Code Library, record ascl:1203.012. Astrometrica: astrometric data reduction of CCD images. ![]() Oszkiewicz DA, Bowell E, Wasserman LH, Muinonen K, Penttilä A, Pieniluoma T, Trilling DE, Thomas CA (2012) Asteroid taxonomic signatures from photometric phase curves, Icarus 219, 283–296. ![]() Hergenrother CW, Nolan MC, Binzel RP, Cloutis EA, Barucci MA, Michel P, Scheeres D, d’Aubigny CD, Lazzaro D, Pinilla-Alonso N, Campins H, Licandro J, Clark BE, Rizk B, Beshore EC, Lauretta LS (2013) Light curve, color and phase function photometry of the OSIRIS-REx target asteroid (101955) Bennu, Icarus 226, 663–670. Hergenrother CW, Hill D (2013) The OSIRIS-REx Target Asteroids! project: A small telescope initiative to characterize potential spacecraft mission target asteroids, Minor Planet Bulletin 40, p. Belskaya IN, Shevchenko VG (2000) Opposition effect of asteroids, Icarus 147, p. ![]()
0 Comments
Leave a Reply. |