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Borasisi
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Number
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66652
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Provisional name
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1999 RZ253
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Class
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Cubewano
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Discovery
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08.09.1999, 07:15:46 UT, Mauna Kea, Hawaii, USA
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Discovery chart
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Discovery position
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25° Aquarius 32' Rx
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Time of announcement
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22.07.2000 - 02:42 UT
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Naming
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September 2007
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Orbital period
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290.3 years
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Orbit
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Aphelion
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48.045 AU
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Perihelion
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39.911 AU
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Semimajor axis
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43.978 AU
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Magnitude
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5.9
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Diameter
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126 - 390 km
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Inclination
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0.6
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Borasisi has a binary companion. |
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Satellite
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Pabu
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Discovery
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images 23.04.2003, 02:25:26 - 04:20:38 UT, Hubble Space Telescope
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Time of announcement
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06.06.2003 IAU circular 8143
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Naming
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September 2007
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Distance between pair
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4660 km +/- 170 km
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Orbital period
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46.263 +0.006/-0.074 d
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The name comes from Kurt Vonnegut's novel Cat's Cradle.
"... wherein Borasisi, the sun, held Pabu, the moon, in his arms, and hoped that Pabu would bear him a fiery child. "But poor Pabu gave birth to children that were cold, that did not burn; and Borasisi threw them away in disgust. These were the planets, who circled their terrible father at a safe distance. "Then poor Pabu herself was cast away, and she went to live with her favorite child, which was Earth. Earth was Pabu's favorite because it had people on it; and the people looked up at her and loved her and sympathized." The Books of Bokonon from Cat's Cradle Bokononism, the fictional religion |