World Library  
Flag as Inappropriate
Email this Article

19521 Chaos

Article Id: WHEBN0002350330
Reproduction Date:

Title: 19521 Chaos  
Author: World Heritage Encyclopedia
Language: English
Subject: Classical Kuiper belt object, Deep Ecliptic Survey, List of possible dwarf planets, List of trans-Neptunian objects, 28978 Ixion
Publisher: World Heritage Encyclopedia

19521 Chaos

19521 Chaos
Discovered by Deep Ecliptic
Discovery date November 19, 1998
MPC designation 19521 Chaos
Named after
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
Inclination 12.0550°
Physical characteristics
Dimensions 600+140
Sidereal rotation period
3.985 d
Albedo 0.050+0.030
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
,[3] making it, with its absolute magnitude (H) of 4.8,[2] 600+140
in diameter.[3] It is named after the primeval state of existence in Greek mythology, from which the first gods appeared.


  • 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]


  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. ^

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
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.