3204 Lindgren, provisional designation , is a carbonaceous background
asteroid
An asteroid is a minor planet of the inner Solar System. Sizes and shapes of asteroids vary significantly, ranging from 1-meter rocks to a dwarf planet almost 1000 km in diameter; they are rocky, metallic or icy bodies with no atmosphere.
...
B-type asteroid
B-type asteroids are a relatively uncommon type of carbonaceous asteroid, falling into the wider C-group; the 'B' indicates these objects are spectrally blue. In the asteroid population, B-class objects can be found in the outer asteroid belt, an ...
has a
rotation period
The rotation period of a celestial object (e.g., star, gas giant, planet, moon, asteroid) may refer to its sidereal rotation period, i.e. the time that the object takes to complete a single revolution around its axis of rotation relative to the ...
of 5.6 hours. It was named after Swedish writer
Astrid Lindgren
Astrid Anna Emilia Lindgren (; ; 14 November 1907 – 28 January 2002) was a Swedish writer of fiction and screenplays. She is best known for several children's book series, featuring Pippi Longstocking, Emil of Lönneberga, Karlsson-on- ...