19521 Chaos
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Discovery
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Discovered by | Deep Ecliptic Survey |
Discovery date | November 19, 1998 |
Designations
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MPC designation | 19521 Chaos |
Alternative names | 1998 WH24 |
Minor planet category |
TNO (cubewano) |
Epoch January 30, 2005 (JD 2453400.5) | |
Aphelion | 50.269 AU |
Perihelion | 40.929 AU |
Semi-major axis | 45.599 AU |
Eccentricity | 0.102 |
Orbital period | 309.1006 y |
Average orbital speed | 4.3931 km/s |
Mean anomaly | 324.2844° |
Inclination | 12.0550° |
Longitude of ascending node | 50.0103° |
Argument of perihelion | 58.6836° |
Physical characteristics
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Dimensions | ~560 km |
Sidereal rotation period |
3.985 (days) |
Absolute magnitude | 4.755 |
19521 Chaos (pronounced /ˈkeɪɒs/, from Greek: Χάος, formerly known as 1998 WH24) is a cubewano, a Kuiper belt object not in resonance with any planet. Chaos was discovered in 1998 by the Deep Ecliptic Survey, with Kitt Peak's 4 m telescope. It is large at about 560 km, and bright at H=4.755. It is named after the primeval state of existence in Greek mythology, from which the first gods appeared.
[edit] References
- Catchall Catalog of Minor Planets
- original MPEC circular 1998-X08and the revision, 1999-V03
- AstDys
- NASA JPL Small-Body Database Browser on 19521 Chaos
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