19521 Chaos
Template:Short description Template:Use dmy dates Script error: No such module "infobox".Script error: No such module "Check for unknown parameters".
19521 Chaos 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.
Occultations suggest it is a compact or contact binary equivalent to a sphere 400 to 500 km in diameter.[1] On 20 November 2020, Chaos occulted a magnitude 16.8 star. Three observers detected the occultation, finding that the object is likely smaller than Script error: No such module "val". in diameter.[2] Another occultation was recorded on 14 January 2022; full results on size, shape, geometric albedo, and the spin-axis orientation have not been releasedTemplate:Update inline.[3] A further occultation occurred on 28 September 2023, with a shadow crossing most of North America. This occultation was observed by over 30 observers;[4] preliminary analysis suggests that Chaos is a binary (possibly a contact binary).[5]
Name
It is named after the primeval state of existence in Greek mythology, from which the first gods appeared.
Planetary symbols are no longer much used in astronomy, so Chaos never received a symbol in the astronomical literature. There is no standard symbol for Chaos used by astrologers either. Michael Moorcock's Symbol of Chaos (File:Chaos symbol (fixed width).svg) has been used.[6]
.svg){kind=link}
Orbit
19521 Chaos has an orbital period of approximately 309 years. Its orbit is longer, but less 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. Currently, the closest approach possible to Neptune (MOID) is Script error: No such module "convert"..[7]
Chaos will come to perihelion at around December 2033,[8] coming as close as 40 AUs from Earth. Its brightest magnitude will be 20.8.
References
<templatestyles src="Reflist/styles.css" />
- ↑ Cite error: Script error: No such module "Namespace detect".Script error: No such module "Namespace detect".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "Citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Cite error: Script error: No such module "Namespace detect".Script error: No such module "Namespace detect".
Cite error: <ref> tag with name "jpldata" defined in <references> is not used in prior text.
Cite error: <ref> tag with name "Thayer1994" defined in <references> is not used in prior text.
Cite error: <ref> tag with name "Buie" defined in <references> is not used in prior text.
Cite error: <ref> tag with name "TNOsCool6" defined in <references> is not used in prior text.
Cite error: <ref> tag with name "K08O05" defined in <references> is not used in prior text.
<ref> tag with name "Doressoundiram2002" defined in <references> is not used in prior text.Script error: No such module "Check for unknown parameters".
External links
- Script error: No such module "citation/CS1".
- Script error: No such module "citation/CS1".
- Template:AstDys
- Template:PAGENAMEBASE at the JPL Small-Body DatabaseTemplate:EditAtWikidata
Script error: No such module "Navbox". Script error: No such module "Navbox". Template:Trans-Neptunian objects Template:Authority control