Logo
Unionpedia
Communication
Get it on Google Play
New! Download Unionpedia on your Android™ device!
Download
Faster access than browser!
And Ads-free!

NGC 147

NGC 147 (also known as DDO3 or Caldwell 17) is a dwarf spheroidal galaxy about 2.58 Mly away in the constellation Cassiopeia. [1]

28 relations: Andromeda Galaxy, Asymptotic giant branch, Caldwell catalogue, Cassiopeia (constellation), Constellation, David Dunlap Observatory Catalogue, Dwarf spheroidal galaxy, Epoch (astronomy), H I region, Interstellar medium, John Herschel, Light-year, List of Andromeda's satellite galaxies, Local Group, Los Angeles, Metallicity, Monthly Notices of the Royal Astronomical Society, Mount Wilson (California), New General Catalogue, NGC 185, Parsec, Principal Galaxies Catalogue, Satellite galaxy, Second, Telescope, Tip of the red-giant branch, Uppsala General Catalogue, Walter Baade.

Andromeda Galaxy

The Andromeda Galaxy, also known as Messier 31, M31, or NGC 224, is a spiral galaxy approximately 780 kiloparsecs (2.5 million light-years) from Earth.

New!!: NGC 147 and Andromeda Galaxy · See more »

Asymptotic giant branch

The asymptotic giant branch is the region of the Hertzsprung–Russell diagram populated by evolving low- to medium-mass stars.

New!!: NGC 147 and Asymptotic giant branch · See more »

Caldwell catalogue

The Caldwell Catalogue is an astronomical catalog of 109 star clusters, nebulae, and galaxies for observation by amateur astronomers.

New!!: NGC 147 and Caldwell catalogue · See more »

Cassiopeia (constellation)

Cassiopeia is a constellation in the northern sky, named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivalled beauty.

New!!: NGC 147 and Cassiopeia (constellation) · See more »

Constellation

In modern astronomy, a constellation is a specific area of the celestial sphere as defined by the International Astronomical Union (IAU).

New!!: NGC 147 and Constellation · See more »

David Dunlap Observatory Catalogue

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.

New!!: NGC 147 and David Dunlap Observatory Catalogue · See more »

Dwarf spheroidal galaxy

Dwarf spheroidal galaxy (dSph) is a term in astronomy applied to low luminosity galaxies that are companions to the Milky Way and to the similar systems that are companions to the Andromeda Galaxy (M31).

New!!: NGC 147 and Dwarf spheroidal galaxy · See more »

Epoch (astronomy)

In astronomy, an epoch is a moment in time used as a reference point for some time-varying astronomical quantity, such as the celestial coordinates or elliptical orbital elements of a celestial body, because these are subject to perturbations and vary with time.

New!!: NGC 147 and Epoch (astronomy) · See more »

H I region

An H I region is a cloud in the interstellar medium composed of neutral atomic hydrogen (H I), in addition to the local abundance of helium and other elements.

New!!: NGC 147 and H I region · See more »

Interstellar medium

In astronomy, the interstellar medium (ISM) is the matter that exists in the space between the star systems in a galaxy.

New!!: NGC 147 and Interstellar medium · See more »

John Herschel

Sir John Frederick William Herschel, 1st Baronet (7 March 1792 – 11 May 1871) was an English polymath, mathematician, astronomer, chemist, inventor, and experimental photographer, who in some years also did valuable botanical work.

New!!: NGC 147 and John Herschel · See more »

Light-year

A light-year (abbreviation: ly), sometimes written light year, is a unit of length used informally to express astronomical distances.

New!!: NGC 147 and Light-year · See more »

List of Andromeda's satellite galaxies

The Andromeda Galaxy (M31) has satellite galaxies just like the Milky Way.

New!!: NGC 147 and List of Andromeda's satellite galaxies · See more »

Local Group

The Local Group is the galaxy group that includes the Milky Way.

New!!: NGC 147 and Local Group · See more »

Los Angeles

Los Angeles, officially the City of Los Angeles and often known by its initials L.A., is the second-largest city in the United States, the most populous city in the U.S. state of California, and the county seat of Los Angeles County.

New!!: NGC 147 and Los Angeles · See more »

Metallicity

In astronomy and physical cosmology, the metallicity or Z, is the fraction of mass of a star or other kind of astronomical object, beyond hydrogen (X) and helium (Y).

New!!: NGC 147 and Metallicity · See more »

Monthly Notices of the Royal Astronomical Society

Monthly Notices of the Royal Astronomical Society (MNRAS) is a peer-reviewed scientific journal covering research in astronomy and astrophysics.

New!!: NGC 147 and Monthly Notices of the Royal Astronomical Society · See more »

Mount Wilson (California)

Mount Wilson is one of the better-known peaks of the San Gabriel Mountains, located within the San Gabriel Mountains National Monument and Angeles National Forest in Los Angeles County, California.

New!!: NGC 147 and Mount Wilson (California) · See more »

New General Catalogue

The New General Catalogue of Nebulae and Clusters of Stars (abbreviated as NGC) is a well-known catalogue of deep-sky objects in astronomy compiled by John Louis Emil Dreyer in 1888, as a new version of John Herschel's Catalogue of Nebulae and Clusters of Stars.

New!!: NGC 147 and New General Catalogue · See more »

NGC 185

NGC 185 (also known as Caldwell 18) is a dwarf spheroidal galaxy about 2.08 million light-years away in the constellation Cassiopeia.

New!!: NGC 147 and NGC 185 · See more »

Parsec

A parsec (symbol: pc) is a unit of length used to measure the astronomically large distances to objects outside the Solar System.

New!!: NGC 147 and Parsec · See more »

Principal Galaxies Catalogue

The Catalogue of Principal Galaxies (PGC) is an astronomical catalog published in 1989 that lists B1950 and J2000 equatorial coordinates and cross-identifications for 73,197 galaxies.

New!!: NGC 147 and Principal Galaxies Catalogue · See more »

Satellite galaxy

A satellite galaxy is a galaxy that orbits a larger galaxy due to gravitational attraction.

New!!: NGC 147 and Satellite galaxy · See more »

Second

The second (symbol: s) (abbreviated s or sec) is the base unit of time in the International System of Units (SI).

New!!: NGC 147 and Second · See more »

Telescope

A telescope is an instrument that aids in the observation of remote objects by collecting electromagnetic radiation (such as visible light).

New!!: NGC 147 and Telescope · See more »

Tip of the red-giant branch

Tip of the red-giant branch (TRGB) is a primary distance indicator used in astronomy.

New!!: NGC 147 and Tip of the red-giant branch · See more »

Uppsala General Catalogue

The Uppsala General Catalogue of Galaxies (UGC) is a catalogue of 12921 galaxies visible from the northern hemisphere.

New!!: NGC 147 and Uppsala General Catalogue · See more »

Walter Baade

Wilhelm Heinrich Walter Baade (March 24, 1893 – June 25, 1960) was a German astronomer who worked in the USA from 1931 to 1959.

New!!: NGC 147 and Walter Baade · See more »

References

[1] https://en.wikipedia.org/wiki/NGC_147

OutgoingIncoming
Hey! We are on Facebook now! »