Difference between revisions of "4769 Castalia"
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'''4769 Castalia''' is a near-Earth object of the Apollo group of asteroids. It was discovered by [[w:Eleanor Helin]] at [[w;Palomar Observatory]] on 9 August 1969, and on 28 August 1989, Castalia was observed by radar at [[w:Arecibo Observatory]], the first asteroid modeled by radar. | '''4769 Castalia''' is a near-Earth object of the Apollo group of asteroids. It was discovered by [[w:Eleanor Helin]] at [[w;Palomar Observatory]] on 9 August 1969, and on 28 August 1989, Castalia was observed by radar at [[w:Arecibo Observatory]], the first asteroid modeled by radar. | ||
| − | + | == Physical Characteristics in Orbiter == | |
| − | In [[Orbiter]] Castalia has a diameter of about 1800 meters and a mass of 5×10<sup>11</sup> kg. | + | In [[Orbiter]] Castalia has a diameter of about 1800 meters and a mass of 5×10<sup>11</sup> kg. Surface Gravity is about 0.00001 m/s<sup>2</sup>, and escape velocity is about 0.2 m/s. |
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| + | == Orbital characteristics in Orbiter == | ||
| + | The orbit of Castalia varies from inside the orbit of [[Venus]] to just outside that of [[Mars]], Semimajor axis is about 159 million Km at an eccentricity 0.483, inclination is of Orbital period is about 400 days. | ||
Revision as of 11:44, 16 April 2024
4769 Castalia is a near-Earth object of the Apollo group of asteroids. It was discovered by w:Eleanor Helin at w;Palomar Observatory on 9 August 1969, and on 28 August 1989, Castalia was observed by radar at w:Arecibo Observatory, the first asteroid modeled by radar.
Physical Characteristics in Orbiter
In Orbiter Castalia has a diameter of about 1800 meters and a mass of 5×1011 kg. Surface Gravity is about 0.00001 m/s2, and escape velocity is about 0.2 m/s.
Orbital characteristics in Orbiter
The orbit of Castalia varies from inside the orbit of Venus to just outside that of Mars, Semimajor axis is about 159 million Km at an eccentricity 0.483, inclination is of Orbital period is about 400 days.