90377 Sedna (pronúnciese sed'-nə) es un Sedna's precise orbital period is not yet known, but it is calculated at between 10.5 and 12.0 thousand years. It should reach perihelion in late 2075[1][2]​ to mid 2076.[3]​ Sedna will overtake Eris as the furthest known spheroid orbiting the Sun in 2114.[3]

(90377) Sedna

  1. Lowell DES Perihelion Epoch = 2000.0 + (2479283.2236 − 2451545.0)/365.25 = 2075.9431 = (2076-1-1 - 20.7768 days) = 2075-12-11
  2. Error en la cita: Etiqueta <ref> no válida; no se ha definido el contenido de las referencias llamadas DES
  3. a b «Horizons Output for Sedna 2076/2114». Consultado el 19 de noviembre de 2007.  Horizons