Discovery of Sedna
Descubrimiento de Sedna
- Date
- 2003 · confidence high
- Place
- Palomar Observatory, California, United States
- Credited to
- Michael E. Brown, Chad Trujillo, David Rabinowitz
- Field
- Cosmos & Earth
What was discovered
The Brown, Trujillo and Rabinowitz team detected this extremely distant, reddish object, whose orbit extends far beyond the Kuiper belt, pointing to a region of the outer solar system still unexplained.
What it led to
- Debate over a possible inner scattered-disc population
- Hypothesis of a massive ninth planet perturbing its orbit
- Expansion of the known map of the outer solar system