(covers information from several alternate timelines)
Andor was an inhabited planet. By the late 24th century, this Federation world was considered to be of comparable strategic importance as Berengaria, Vulcan and even perhaps Earth. (DS9: "In the Cards"). An array of subspace relay stations linked it to Rigel. (TNG: "Conspiracy", okudagram)
In 2293, the location of Andor in the Milky Way Galaxy was labeled in the star chart The Explored Galaxy, which was on display in Captain James T. Kirk's quarters aboard the USS Enterprise-A. (Star Trek VI: The Undiscovered Country, okudagram)
Some time before 2363, as a junior officer, Lisa Cusak was assigned as an attaché to the Federation embassy on Andor. She met an Andorian civilian who worked at the Andorian Agricultural Ministry. The two ended up dating for 6 years. (DS9: "The Sound of Her Voice")
In 2373, Kai Winn rhetorically asked Captain Benjamin Sisko if the Federation would be willing to sacrifice Andor, Vulcan, Berengaria or even Earth to protect Bajor from the Dominion if necessary. (DS9: "In the Cards")
In 2366, in an alternate timeline, during the Federation-Klingon War, the location of Andor was labeled on a tactical situation monitor in the ready room aboard the USS Enterprise-D (TNG: "Yesterday's Enterprise", okudagram)
See also Edit
Background information Edit
"an-DOOR" was the pronunciation for this planet's name from the script pronunciation guide for "In the Cards".
In Star Trek: Enterprise's season 4 DVD, writers Judith and Garfield Reeves-Stevens have said they made the Andorian homeworld a satellite of a gas giant to help explain why both names Andor and Andoria have been used interchangeably. Andor was the gas giant and Andoria was the moon. According to StarTrek.com, Andor was an alternate name for Andoria.
A newspaper article (It's Federation Day!) in the Picard family album created for Star Trek Generations suggests that a "Sarahd of Andor" was the Andorian representative present at the forming of the Federation in 2161, though the clipping was not seen on screen and is not considered canon.
According to Star Trek: Star Charts (p. 52), Andor was the name of Andoria's capital city.
According to the Stellar Cartography: The Starfleet Reference Library ("Federation Historical Highlights, 2161-2385"), Andor was both a name for the J-class gas giant and an alternate name for Andoria.
According to Worlds of Star Trek: Deep Space Nine, Volume 1, the difference between Andor and Andoria was the same as the difference between Terra and Earth. Andoria and Earth being the names preferred by the natives.