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19521 Chaos

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Title: 19521 Chaos  
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19521 Chaos

19521 Chaos
Discovery
Discovered by Deep Ecliptic
Survey
Discovery date November 19, 1998
Designations
MPC designation 19521 Chaos
Pronunciation
Named after
Chaos
1998 WH24
TNO (cubewano)[1]
Adjectives Chaotian
Orbital characteristics[2]
Epoch January 30, 2005 (JD 2453400.5)
Aphelion 50.269 AU
Perihelion 40.929 AU
45.599 AU
Eccentricity 0.102
309.1006 yr
Average orbital speed
4.3931 km/s
324.2844°
Inclination 12.0550°
50.0103°
58.6836°
Physical characteristics
Dimensions 600+140
−130
 km
[3]
Sidereal rotation period
3.985 d
Albedo 0.050+0.030
−0.016
[3]
4.8 [2]
5.0 [4]

19521 Chaos is a cubewano, a Kuiper-belt object not in resonance with any planet. It is a likely dwarf planet. Chaos was discovered in 1998 by the Deep Ecliptic Survey with Kitt Peak's 4 m telescope. Its albedo is 0.050+0.030
−0.016
,[3] making it, with its absolute magnitude (H) of 4.8,[2] 600+140
−130
 km
in diameter.[3] It is named after the primeval state of existence in Greek mythology, from which the first gods appeared.

Contents

  • Orbit and rotation 1
  • In fiction 2
  • References 3
  • External links 4

Orbit and rotation

19521 Chaos has an orbital period of approximately 309 years. Its orbit is not much more eccentric than the orbit of Pluto. 19521 Chaos's orbit is inclined approximately 12° to the ecliptic. Its orbit never crosses the orbit of Neptune.

Left: The orbit of 19521 Chaos (blue) compared to those of the four giant planets: Jupiter, Saturn, Uranus and Neptune (red). Right: 19521 Chaos‍ '​s size compared to several other trans-Neptunian objects (TNOs) and to the Earth's Moon.

In fiction

In the online comic Quantum Vibe the lead characters hide on a secret base they have constructed on Chaos to perform experiments undetected.[5]

References

  1. ^  
  2. ^ a b c "JPL Small-Body Database Browser: 19521 Chaos (1998 WH24)" (2007-12-14 last obs). Retrieved 2010-03-13. 
  3. ^ a b c d “TNOs are Cool”: A survey of the trans-Neptunian region VI. Herschel/PACS observations and thermal modeling of 19 classical Kuiper belt objects E. Vilenius, C. Kiss, M. Mommert, T. Müller, P. Santos-Sanz, A. Pal, J. Stansberry, M. Mueller, N. Peixinho, S. Fornasier, E. Lellouch, A. Delsanti, A. Thirouin, J. L. Ortiz, R. Duffard, D. Perna, N. Szalai, S. Protopapa, F. Henry, D. Hestroffer, M. Rengel, E. Dotto, & P. Hartogh
  4. ^ How many dwarf planets are there in the outer solar system?""". Michael E. Brown. Retrieved 31 August 2015. 
  5. ^ http://www.quantumvibe.com/strip?page=1013

External links

  • Orbital simulation from JPL (Java) / Horizons Ephemeris
  • Original Minor Planet Electronic Circular (1998-X08) for 19521 Chaos
  • Revised Minor Planet Electronic Circular (1999-V03) 19521 Chaos
  • AstDys
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