(204966) 1990 QX3
Encyclopedia
1990 QX3 is a main-belt
minor planet
. It was discovered by Henry E. Holt
at the Palomar Observatory
in San Diego County
, California, on August 22, 1990.
Asteroid belt
The asteroid belt is the region of the Solar System located roughly between the orbits of the planets Mars and Jupiter. It is occupied by numerous irregularly shaped bodies called asteroids or minor planets...
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 Henry E. Holt
Henry E. Holt
Henry E. Holt is an American astronomer.He has discovered numerous asteroids. He is also a co-discoverer of periodic comets 121P/Shoemaker-Holt, 127P/Holt-Olmstead and 128P/Shoemaker-Holt....
at the Palomar Observatory
Palomar Observatory
Palomar Observatory is a privately owned observatory located in San Diego County, California, southeast of Pasadena's Mount Wilson Observatory, in the Palomar Mountain Range. At approximately elevation, it is owned and operated by the California Institute of Technology...
in San Diego County
San Diego County, California
San Diego County is a large county located in the southwestern corner of the US state of California. Hence, San Diego County is also located in the southwestern corner of the 48 contiguous United States. Its county seat and largest city is San Diego. Its population was about 2,813,835 in the 2000...
, California, on August 22, 1990.