矮行星
Sedna
Distant body in the outer Solar System
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Sedna离地球有多远？
123亿 km (82 AU)
它的光传到地球需要 11 小时 21 分钟。
距太阳 124亿 km (82.8 AU)。
在 3D 中查看数据一览
- 半径
- 500 km
- 距太阳
- 124亿 km (82.8 AU)
位置和轨道来自 JPL Horizons
Sedna (dwarf planet)
Sedna is a dwarf planet in the outermost reaches of the Solar System, orbiting the Sun far beyond the orbit of Neptune. It was discovered in 2003, and is roughly 1,000 km in diameter. Spectroscopic analysis has revealed its surface to be a mixture of the solid ices of water, carbon dioxide, and ethane, along with sedimentary deposits of methane-derived, reddish-colored tholins, a chemical makeup similar to the surfac…
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