Jpl - marina macumba


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ʻOumuamua is the first known interstellar object to visit the Solar System and it appears to come from roughly the direction of the star Vega in the constellation Lyra . [26] [27] [31] [32] The incoming direction of motion of ʻOumuamua is 6° from the solar apex (the direction of the Sun's movement relative to local stars), which is the most likely direction for approaches from objects outside the Solar System. [31] [33] On 26 October, two precovery observations from the Catalina Sky Survey were found dated 14 and 17 October. [34] [24] A two-week observation arc had verified a strongly hyperbolic trajectory . [6] [21] It has a hyperbolic excess velocity (velocity at infinity, v ∞ {\displaystyle v_{\infty }\!} ) of  km/s (58,900 mph), its speed relative to the Sun when in interstellar space. [n 3]

"Radar has the ability to identify asteroids with surfaces made of highly reflective rocky or metallic materials," said Lance Benner, who led the radar observations at JPL. "We were able to show that radar scattering properties are consistent with a bright rocky surface, similar to a particular class of meteorites that reflect as much as 50 percent of the light falling on them."

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