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Encyclopedia > Sextans A
Sextans A
Galaxy List of galaxies
Irregular galaxy Sextans A. The bright Milky Way foreground stars appear yellowish in this view. Beyond them lie the stars of Sextans A with young blue star clusters clearly visible.
Irregular galaxy Sextans A. The bright Milky Way foreground stars appear yellowish in this view. Beyond them lie the stars of Sextans A with young blue star clusters clearly visible.

Sextans A NGC 4414, a typical spiral galaxy in the constellation Coma Berenices, is about 56,000 light-years in diameter and approximately 60 million light-years distant. ... List of galaxies: Abell 1835 IR1916 AM 0644-741 Andromeda Galaxy (M31/NGC 224) Andromeda I Andromeda II Andromeda III Aquarius Dwarf Barnards Galaxy (NGC 6822) Black Eye Galaxy (M64/NGC 4826) Bodes Galaxy (M81/NGC 3031) Canis Major Dwarf Galaxy Carina Dwarf Centaurus A Galaxy Draco Dwarf Fornax... A member of the local group of galaxies which includes the massive spirals Andromeda and our own Milky Way, Sextans A is about 10 million light years distant. ... A member of the local group of galaxies which includes the massive spirals Andromeda and our own Milky Way, Sextans A is about 10 million light years distant. ... The Milky Way (a translation of the Latin Via Lactea, in turn derived from the Greek Γαλαξίας (Galaxias), sometimes referred to simply as the Galaxy), is a barred spiral galaxy of the Local Group. ...

Observation data
(Epoch J2000)
Constellation Sextans
Right ascension 10h 11m 00.8s[1]
Declination -04° 41′ 34″[1]
Redshift 324 ± 2 km/s[1]
Distance 4.31 ± 0.13 Mly (1.32 ± 0.04 Mpc)[2][3][4]
Type IBm[1]
Apparent dimensions (V) 5′.9 × 4′.9[1]
Apparent magnitude (V) 11.9[1]
Notable features -
Other designations
UGCA 205,[1] DDO 75,[1] PGC 29653[1]

Sextans A ( as known as UGCA 205 ), is a tiny dwarf[citation needed] irregular galaxy. It span is 5000 light-years across, and is located within the Local Group, 4.3 million light-years away from the Earth. Sextans A is one of most distant members of the Local Group. In astronomy, an epoch is a moment in time for which celestial coordinates or orbital elements are specified. ... The J2000. ... This article or section does not cite its references or sources. ... For the Ancient Roman coin denomination, see sextans (coin). ... Equatorial Coordinates Right ascension (abbrev. ... In astronomy, declination (dec) is one of the two coordinates of the equatorial coordinate system, the other being either right ascension or hour angle. ... Redshift of spectral lines in the optical spectrum of a supercluster of distant galaxies (right), as compared with that of the Sun (left). ... A kilometer (Commonwealth spelling: kilometre), symbol: km is a unit of length in the metric system equal to 1,000 metres (from the Greek words χίλια (khilia) = thousand and μέτρο (metro) = count/measure). ... This article is about the unit of time. ... (Redirected from 1 E22 m) Categories: Orders of magnitude (length) ... A light-year, symbol ly, is the distance light travels in one year: exactly 9. ... Stellar parallax motion The parsec (symbol pc) is a unit of length used in astronomy. ... Astronomers classify galaxies based on their overall shape (elliptical, spiral or barred spiral) and further by the specific properties of the individual galaxy (for example degree of ellipse, number of spirals or definition of bar). ... The angular diameter of an object as seen from a given position is the diameter measured as an angle. ... // Headline text HEY!! HOW ARE YOU ALL?? Its nice of you to come read this page. ... David Dunlap Observatory Catalogue, known as the DDO or A Catalogue of Dwarf Galaxies, is a catalogue of dwarf galaxies that was published in 1959 (and later expanded in 1966) by Sidney van den Bergh. ... The Principal Galaxies Catalogue (PGC) is an astronomical catalogue that contains all available primary information for each of the known galaxies: morphological type, major and minor axes, magnitude, radial velocity and position angle. ... Wikipedia does not have an article with this exact name. ... It has been suggested that this article or section be merged with Sextans A. (Discuss) The Sextans Dwarf Spheroidal is a dwarf spheroidal galaxy that was discovered in 1990 by Mike Irwin, M.T. Bridgeland, P.S. Bunclark and R.G. McMahon as the 8th satellite of the Milky Way... A dwarf galaxy is a small galaxy composed of up to several billion stars, a small number compared to our own Milky Ways 200-400 billion stars. ... NGC1427A, an example of an irregular galaxy. ... NGC 4414, a typical spiral galaxy in the constellation Coma Berenices, is about 56,000 light-years in diameter and approximately 60 million light-years distant. ... A member of the Local Group of galaxies, irregular galaxy Sextans A is 4. ...


References

  1. ^ a b c d e f g h i NASA/IPAC Extragalactic Database. Results for Sextans A. Retrieved on 2006-11-18.
  2. ^ Dolphin, Andrew E. et al (March 2003). "Deep Hubble Space Telescope Imaging of Sextans A. II. Cepheids and Distance". The Astronomical Journal 125: 1261.
  3. ^ I. D. Karachentsev, V. E. Karachentseva, W. K. Hutchmeier, D. I. Makarov (2004). "A Catalog of Neighboring Galaxies". Astronomical Journal 127: 2031-2068.
  4. ^ Karachentsev, I. D.; Kashibadze, O. G. (2006). "Masses of the local group and of the M81 group estimated from distortions in the local velocity field". Astrophysics 49 (1): 3-18.

 
 

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