Baptistina family

[1][2] It was briefly speculated that the Chicxulub impactor was part of the Baptistina family of asteroids, but this was disproven in 2011 using data from the Wide-field Infrared Survey Explorer (WISE).

The Baptistina family consists of darkly colored asteroids and meteoroids in similar orbits.

However, any conclusions taken from this were highly speculative, as very few members in the family were classified, and not even the albedo of the meteors was known at the time.

[10][11] Concerns were raised regarding the reputed link, in part because very few solid observational constraints existed of the asteroid or family.

[11] In 2011, data from the Wide-field Infrared Survey Explorer (WISE) revised the date of the proposed collision which broke up the Baptistina parent asteroid to about 80 million years ago.