692 Hippodamia, provisional designation 1901 HD, is a stony

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. ...

from the outer region of the asteroid belt, about 45 kilometers in diameter. It was discovered on 5 November 1901, by the German astronomers

Max Wolf Maximilian Franz Joseph Cornelius Wolf (21 June 1863 – 3 October 1932) was a German astronomer and a pioneer in the field of astrophotography. He was the chairman of astronomy at the University of Heidelberg and director of the Heidelberg-K� ...

and August Kopff at

Heidelberg Observatory Heidelberg (; Palatine German: ') is a city in the German state of Baden-Württemberg, situated on the river Neckar in south-west Germany. As of the 2016 census, its population was 159,914, of which roughly a quarter consisted of students. ...

in southern Germany. Nine years later, the body was rediscovered by August Kopff at its apparition in 1910.

Description

The

S-type asteroid S-type asteroids are asteroids with a spectral type that is indicative of a siliceous (i.e. stony) mineralogical composition, hence the name. They have relatively high density. Approximately 17% of asteroids are of this type, making it the second ...

orbits the Sun at a distance of 2.8–4.0 AU once every 6 years and 3 months (2,272 days). Its orbit is tilted by 26 degrees to the plane of the ecliptic and shows an eccentricity of 0.17. Based on its orbital elements, it is a member of the Cybele family. Named after the

65 Cybele Cybele, minor planet designation 65 Cybele, is one of the List of notable asteroids#Largest by diameter, largest asteroids in the Solar System. It is located in the outer asteroid belt. It is thought to be a remnant primordial body. It gives its ...

, the group consists of relatively low-eccentric asteroids, which have a

semi-major axis In geometry, the major axis of an ellipse is its longest diameter: a line segment that runs through the center and both foci, with ends at the two most widely separated points of the perimeter. The semi-major axis (major semiaxis) is the long ...

around 3.4 AU, dwelling in-between the

Hungaria Hungaria or Hungária may refer to: *Latin for Hungary, a European country **For historical entities (from 895) see: Hungary (disambiguation) *Lady of Hungaria, the national personification of Hungary * ''Hungaria'' (Liszt), a symphonic poem by Fra ...

and the outermost

Hilda Hilda is one of several female given names derived from the name ''Hild'', formed from Old Norse , meaning 'battle'. Hild, a Nordic-German Bellona, was a Valkyrie who conveyed fallen warriors to Valhalla. Warfare was often called Hild's Game. Th ...

family of asteroids. According to the surveys carried out by the Infrared Astronomical Satellite,

IRAS The Infrared Astronomical Satellite (Dutch: ''Infrarood Astronomische Satelliet'') (IRAS) was the first space telescope to perform a survey of the entire night sky at infrared wavelengths. Launched on 25 January 1983, its mission lasted ten mo ...

, the Japanese Akari satellite, and the

Wide-field Infrared Survey Explorer Wide-field Infrared Survey Explorer (WISE, observatory code C51, Explorer 92 and SMEX-6) is a NASA infrared astronomy space telescope in the Explorers Program. It was launched in December 2009, and placed in hibernation mode in February 2011, ...

with its subsequent NEOWISE mission, the body has an

albedo Albedo (; ) is the measure of the diffuse reflection of sunlight, solar radiation out of the total solar radiation and measured on a scale from 0, corresponding to a black body that absorbs all incident radiation, to 1, corresponding to a body ...

between 0.18 and 0.20, and several independent and concurring photometric light-curve analysis rendered a well-defined

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 8.99 hours. The minor planet was named after

Hippodamia Hippodamia (, ; also Hippodamea and Hippodameia; Ancient Greek: Ἱπποδάμεια "she who masters horses" derived from ''hippos'' "horse" and ''damazein'' "to tame") was a Greek mythological figure. She was the queen of Pisa as the wife ...

, a figure from

Greek mythology A major branch of classical mythology, Greek mythology is the body of myths originally told by the Ancient Greece, ancient Greeks, and a genre of Ancient Greek folklore. These stories concern the Cosmogony, origin and Cosmology#Metaphysical co ...

. It is believed the naming might have been influenced by the two letters of the

provisional designation Provisional designation in astronomy is the naming convention applied to astronomical objects immediately following their discovery. The provisional designation is usually superseded by a permanent designation once a reliable orbit has been calcu ...

"1901 HD", a common practice of the discoverers. Hippodamia is the daughter of King

Oenomaus In Greek mythology, King Oenomaus (also Oenamaus; grc-gre, Οἰνόμαος, ''Oἱnómaos'') of Pisa, was the father of Hippodamia and the son of Ares. His name ''Oinomaos'' denotes a wine man. Family Oenomaeus' mother was either naiad Har ...

of Pisa and wife of Pelops. She bribed Myrtilus, her father's charioteer, to remove a spoke from the royal chariot wheels so that Pelops could win her. Oenomaus had already defeated and killed 13 other suitors whom he had challenged to chariot races. After killing Oenomaus, Pelops murdered Myrtilus. These murders were primal sins, all paid for later by the many troubles of the house of Atreus. 692 Hippodamia has been observed to

occult The occult, in the broadest sense, is a category of esoteric supernatural beliefs and practices which generally fall outside the scope of religion and science, encompassing phenomena involving otherworldly agency, such as magic and mysticism a ...

three stars, between 2020 and 2022.

References

External links

Asteroid Lightcurve Database (LCDB)
query form

)
Dictionary of Minor Planet Names
Google books

– Observatoire de Genève, Raoul Behrend

– Minor Planet Center * * {{DEFAULTSORT:Hippodamia 000692 Discoveries by Max Wolf Discoveries by August Kopff Named minor planets 000692 19011105