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JKCS 041 is a
JKCS 041 is a cluster
may refer to:
Science and technology Astronomy
* Cluster (spacecraft), constellation of four European Space Agency spacecraft
* Cluster II (spacecraft), a European Space Agency mission to study the magnetosphere
* Asteroid cluster, a small ...
of galaxies
A galaxy is a system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity. The word is derived from the Greek ' (), literally 'milky', a reference to the Milky Way galaxy that contains the Solar Sys ...
with the distinction, as of 2009, of being the farthest galaxy cluster
A galaxy cluster, or a cluster of galaxies, is a structure that consists of anywhere from hundreds to thousands of galaxies that are bound together by gravity, with typical masses ranging from 1014 to 1015 solar masses. Clusters consist of galax ...
observed from Earth. It is estimated to be 10.2 billion light-year
A light-year, alternatively spelled light year (ly or lyr), is a unit of length used to express astronomical distances and is equal to exactly , which is approximately 9.46 trillion km or 5.88 trillion mi. As defined by the International Astr ...
s away, seen at redshift
In physics, a redshift is an increase in the wavelength, and corresponding decrease in the frequency and photon energy, of electromagnetic radiation (such as light). The opposite change, a decrease in wavelength and increase in frequency and e ...
1.9. The cluster is located in the constellation Cetus
Cetus () is a constellation, sometimes called 'the whale' in English. The Cetus (mythology), Cetus was a sea monster in Greek mythology which both Perseus and Heracles needed to slay. Cetus is in the region of the sky that contains other water- ...
at a photometrically determined redshift of z=1.9 at right ascension declination (J2000.0
In astronomy, an epoch or reference epoch is a moment in time used as a reference point for some time-varying astronomical quantity. It is useful for the celestial coordinates or orbital elements of a celestial body, as they are subject to pe ...
). There are at least 19 members in the cluster.
See also
*List of the most distant astronomical objects
This article documents the most distant Astronomical object, astronomical objects discovered and verified so far, and the time periods in which they were so classified.
For comparisons with the light travel distance of the astronomical objects li ...
References
{{DEFAULTSORT:Jkcs 041 Galaxy clusters Cetus Articles containing video clips