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2004 XR190
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Number
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-
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Provisional name
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2004 XR190
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Class
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SDO
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Discovery date
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11.12.2004
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Discovery chart
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Discovery position
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11° Gemini 22' Rx
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Time of announcement
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12.12.2005 - 23:35 UT
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Orbital period
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430.7 years
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Orbit
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Aphelion
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63.535 AU
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Perihelion
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51.146 AU
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Semimajor axis
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57.340 AU
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Magnitude
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4.5
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Diameter
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240 - 740 km
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This object has been nicknamed "Buffy". It is orbiting about twice as far from the Sun as Neptune and it is the first known object with a nearly circular orbit beyond 50 AU. It has an extreme orbital tilt (about 47 degrees). |
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