(5646) 1990 TR
Encyclopedia
1990 TR is an Amor-type
near-Earth
minor planet
. It was discovered by Seiji Ueda
and Hiroshi Kaneda
in Kushiro, Hokkaidō
, Japan, on October 11, 1990.
Amor asteroid
The Amor asteroids are a group of near-Earth asteroids named after the asteroid 1221 Amor. They approach the orbit of the Earth from beyond, but do not cross it. Most Amors do cross the orbit of Mars...
near-Earth
Near-Earth object
A near-Earth object is a Solar System object whose orbit brings it into close proximity with the Earth. All NEOs have a perihelion distance less than 1.3 AU. They include a few thousand near-Earth asteroids , near-Earth comets, a number of solar-orbiting spacecraft, and meteoroids large enough to...
minor planet
Minor planet
An asteroid group or minor-planet group is a population of minor planets that have a share broadly similar orbits. Members are generally unrelated to each other, unlike in an asteroid family, which often results from the break-up of a single asteroid...
. It was discovered by Seiji Ueda
Seiji Ueda
is a Japanese astronomer. He is a prolific discoverer of asteroids. Between 1987 and 2000, Ueda discovered 705 asteroids. Asteroid 4676 Uedaseiji, discovered in 1990, is named for him....
and Hiroshi Kaneda
Hiroshi Kaneda
is a Japanese astronomer. He is the eighth most prolific individual discoverer of asteroids. Between 1987 and 2000, Kaneda discovered 705 asteroids. Asteroid 4677 Hiroshi, discovered in 1990, is named after him. Along with being an astronomer, Kaneda has worked as a computer programmer who "has...
in Kushiro, Hokkaidō
Kushiro, Hokkaido
is a city located in Kushiro Subprefecture, Hokkaidō, Japan. It is the capital city of Kushiro Subprefecture, as well as the most populous city in eastern Hokkaidō....
, Japan, on October 11, 1990.