258 Tyche
Encyclopedia
258 Tyche is a relatively large main belt
asteroid
discovered in 1886. It is classified as an S-type
. Tyche orbits very close to the Eunomia family
of asteroids, and could be a member based on composition. However, it is larger than all family members apart from 15 Eunomia
while lying at the very edge of the family group. Hence, there is a good chance that it is an unrelated interloper.
There is some uncertainty regarding Tyche's rotation period. Various authors give values from 9.983 to 10.041 hours.
It was discovered by Robert Luther
on May 4, 1886 in Düsseldorf
and was named after Greek
goddess Tyche
. Tyche's Roman
equivalent is Fortuna, who also has an asteroid named after her (19 Fortuna
).
This asteroids perihelion (closest approach to the Sun) is 2AU
.
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...
asteroid
Asteroid
Asteroids are a class of small Solar System bodies in orbit around the Sun. They have also been called planetoids, especially the larger ones...
discovered in 1886. It is classified as an S-type
S-type asteroid
S-type asteroids are of a stony composition, hence the name. Approximately 17% of asteroids are of this type, making it the second most common after the C-type.-Characteristics:...
. Tyche orbits very close to the Eunomia family
Eunomia family
The Eunomia family of asteroids is a large grouping of S-type asteroids named after the Greek goddess Eunomia. It is the most prominent family in the intermediate main belt...
of asteroids, and could be a member based on composition. However, it is larger than all family members apart from 15 Eunomia
15 Eunomia
15 Eunomia is a very large asteroid in the inner asteroid belt. It is the largest of the stony asteroids, and somewhere between the 8th-to-12th-largest main-belt asteroid overall...
while lying at the very edge of the family group. Hence, there is a good chance that it is an unrelated interloper.
There is some uncertainty regarding Tyche's rotation period. Various authors give values from 9.983 to 10.041 hours.
It was discovered by Robert Luther
Karl Theodor Robert Luther
Karl Theodor Robert Luther , normally published as Robert Luther, was a German astronomer who searched for asteroids while working in Düsseldorf....
on May 4, 1886 in Düsseldorf
Düsseldorf
Düsseldorf is the capital city of the German state of North Rhine-Westphalia and centre of the Rhine-Ruhr metropolitan region.Düsseldorf is an important international business and financial centre and renowned for its fashion and trade fairs. Located centrally within the European Megalopolis, the...
and was named after Greek
Greek mythology
Greek mythology is the body of myths and legends belonging to the ancient Greeks, concerning their gods and heroes, the nature of the world, and the origins and significance of their own cult and ritual practices. They were a part of religion in ancient Greece...
goddess Tyche
Tyche
In ancient Greek city cults, Tyche was the presiding tutelary deity that governed the fortune and prosperity of a city, its destiny....
. Tyche's Roman
Roman mythology
Roman mythology is the body of traditional stories pertaining to ancient Rome's legendary origins and religious system, as represented in the literature and visual arts of the Romans...
equivalent is Fortuna, who also has an asteroid named after her (19 Fortuna
19 Fortuna
19 Fortuna is one of the largest main-belt asteroids. It has a composition similar to 1 Ceres: a darkly colored surface that is heavily space-weathered with the composition of primitive organic compounds, including tholins....
).
This asteroids perihelion (closest approach to the Sun) is 2AU
Astronomical unit
An astronomical unit is a unit of length equal to about or approximately the mean Earth–Sun distance....
.
External links
- Orbital simulation from JPL (Java) / Ephemeris