Sedna

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Sedna

NASA diagram shows the presumed distance of the Oort cloud compared to the solar system planets, the Kuiper belt, and the orbit of Sedna.

Sedna
Date of discovery	November 14, 200314 November 2003 19 Cheshvan 5764 He 19 Bul 6007 AM
Name of discoverer	Michael E. Brown, C. Trujillo, D. Rabinowitz
Orbital characteristics
Celestial class	Trans-Neptunian object
Primary	Sun
Perihelion	76.361 AU11,423,442,951.07 km 7,098,198,365.962 mi
Aphelion	937 AU140,173,204,190 km 87,099,591,007.268 mi
Semi-major axis	518,57 AU
Orbital eccentricity	0.8527
Physical characteristics
Color	#FFFFFF

Sedna or 90377 Sedna is a trans-Neptunian object discovered in 2003, which lies about three times farther from the Sun than Neptune. Many astronomers consider it a dwarf planet.^[1][2][3]

Comparison of the eight brightest TNOs: Eris, Pluto, Makemake, Haumea, Sedna, 2007 OR10, Quaoar, and Orcus

References

See Also

• Galaxy
• Stellar evolution
• Star
• Supernova