19521 Chaos

19521 Chaos
Discovery
Discovered by Deep Ecliptic
Survey
Discovery date 19 November 1998
Designations
MPC designation 19521 Chaos
Pronunciation /ˈkeɪ.ɒs/
Named after
 Chaos
1998 WH24
TNO (cubewano)[1]
Adjectives Chaotian
Orbital characteristics[2]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 3
Observation arc 5902 days (16.16 yr)
Aphelion 50.636 AU (7.5750 Tm)
Perihelion 40.957 AU (6.1271 Tm)
45.796 AU (6.8510 Tm)
Eccentricity 0.10567
309.92 yr (113199 d)
4.3931 km/s
337.2998°
0° 0m 11.449s / day
Inclination 12.0502°
50.0239°
58.4097°
Earth MOID 39.9896 AU (5.98236 Tm)
Jupiter MOID 35.8316 AU (5.36033 Tm)
Jupiter Tisserand parameter 5.884
Physical characteristics
Dimensions 600+140
−130 km [3]
3.985 d
0.050+0.030
−0.016 [3]
4.8[2]
5.0 [4]

    19521 Chaos /ˈkeɪ.ɒs/ 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.

    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. ↑ Marc W. Buie (2004-11-09). "Orbit Fit and Astrometric record for 19521". SwRI (Space Science Department). Retrieved 2008-09-28.
    2. 1 2 3 "JPL Small-Body Database Browser: 19521 Chaos (1998 WH24)" (2007-12-14 last obs). Retrieved 11 April 2016.
    3. 1 2 3 4 “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 15 September 2016.
    5. ↑ http://www.quantumvibe.com/strip?page=1013

    External links


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