Wikipedia:Today's featured article/requests/90377 Sedna

90377 Sedna

 * This is the archived discussion of the TFAR nomination for the article below. Subsequent comments should be made on the appropriate discussion page (such as Wikipedia talk:Today's featured article/requests). Please do not modify this page.

The result was: scheduled for Today's featured article/November 14, 2023 by Gog the Mild (talk) 17:41, 28 September 2023 (UTC)



Sedna is a trans-Neptunian object with the asteroid number 90377. It was discovered on November 14, 2003 by astronomers Michael Brown, Chad Trujillo, and David Rabinowitz. Sedna is currently 88 Astronomical units (AU) from the Sun, which is three times the distance between Neptune and the Sun. Sedna's orbit is an ellipse and its aphelion is estimated to be 937 AU. For most of its orbital period, Sedna is farther from the Sun than any known dwarf planet candidate and most comets. Sedna is one of the reddest objects in the solar system. It is mostly composed of water, methane, nitrogen ice, and tholin. It may be located within the same open cluster where the Sun was born, some astronomers suggest that Sedna is a celestial body captured by the Sun from another star system. Michael Brown considers it the most important trans-Neptunian object ever discovered, because its unusual orbit may yield information about the origin and early evolution of the Solar System.
 * Most recent similar article(s): I can't find any on astronomical objects in particular, though a handful of astronomy-related articles have been featured this year so far, such as the Space Shuttle Columbia disaster, Rhea Suddon, Apollo 10, and Jim Lovell.
 * Main editors: User:Serendipodous, User:Tycho Magnetic Anomaly-1, User:Praemonitus, User:Kheider, User:XOR'easter, et al.
 * Promoted: 2010-08-18
 * Reasons for nomination: Approaching the twentieth anniversary of discovery, a level-5 vital article in astronomy, certified its FA status in a recent assessment review, and has nearly doubled in size since its previous TFA appearance in 2010.
 * Support as nominator.  Johano ★   18:28, 28 June 2023 (UTC)
 * Support as the FAC nominator.  Serendi pod ous  20:01, 28 June 2023 (UTC)
 * Support ~ HAL  333  15:18, 19 September 2023 (UTC)
 * Coordinator comment. Copy edited and trimmed. (To meet the length requirement - hard limits of 925-1,025 characters including spaces.) Gog the Mild (talk) 17:14, 28 September 2023 (UTC)