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NGC 7331

Index NGC 7331

NGC 7331 (also known as Caldwell 30) is an unbarred spiral galaxy about away in the constellation Pegasus. [1]

29 relations: Barred spiral galaxy, Calar Alto Observatory, Caldwell catalogue, California Institute of Technology, Constellation, Elliptical galaxy, Epoch (astronomy), Lenticular galaxy, Light-year, Messier 94, Milky Way, Milton L. Humason, New General Catalogue, NGC 1512, NGC 7331 Group, Orders of magnitude (length), Palomar Observatory, Parsec, Pegasus (constellation), Principal Galaxies Catalogue, Retrograde and prograde motion, Second, Spain, Spitzer Space Telescope, Supernova, Type Ib and Ic supernovae, Unbarred spiral galaxy, Uppsala General Catalogue, William Herschel.

Barred spiral galaxy

A barred spiral galaxy is a spiral galaxy with a central bar-shaped structure composed of stars.

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Calar Alto Observatory

The Calar Alto Observatory (Centro Astronómico Hispano-Alemán or Deutsch-Spanisches Astronomisches Zentrum, respectively "Spanish–German Astronomical Centre" and "German–Spanish Astronomical Centre") is an astronomical observatory located in Almería province in Spain on Calar Alto, a mountain in the Sierra de Los Filabres range.

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Caldwell catalogue

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

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California Institute of Technology

The California Institute of Technology (abbreviated Caltech)The university itself only spells its short form as "Caltech"; other spellings such as.

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Constellation

A constellation is a group of stars that are considered to form imaginary outlines or meaningful patterns on the celestial sphere, typically representing animals, mythological people or gods, mythological creatures, or manufactured devices.

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Elliptical galaxy

An elliptical galaxy is a type of galaxy having an approximately ellipsoidal shape and a smooth, nearly featureless image.

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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.

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Lenticular galaxy

A lenticular galaxy (denoted S0) is a type of galaxy intermediate between an elliptical (denoted E) and a spiral galaxy in galaxy morphological classification schemes.

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Light-year

The light-year is a unit of length used to express astronomical distances and measures about 9.5 trillion kilometres or 5.9 trillion miles.

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Messier 94

Messier 94 (also known as NGC 4736) is a spiral galaxy in the constellation Canes Venatici.

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Milky Way

The Milky Way is the galaxy that contains our Solar System.

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Milton L. Humason

Milton La Salle Humason (August 19, 1891 – June 18, 1972) was an American astronomer.

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New General Catalogue

The New General Catalogue of Nebulae and Clusters of Stars (abbreviated as NGC) is a catalogue of deep-sky objects compiled by John Louis Emil Dreyer in 1888.

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NGC 1512

NGC 1512 is a barred spiral galaxy approximately 38 million light-years away from Earth in the constellation Horologium.

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NGC 7331 Group

NGC 7331 Group is a group of galaxies in the constellation Pegasus.

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Orders of magnitude (length)

The following are examples of orders of magnitude for different lengths.

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Palomar Observatory

Palomar Observatory is an astronomical observatory located in San Diego County, California, United States, southeast of Los Angeles, California, in the Palomar Mountain Range.

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Parsec

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

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Pegasus (constellation)

Pegasus is a constellation in the northern sky, named after the winged horse Pegasus in Greek mythology.

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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.

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Retrograde and prograde motion

Retrograde motion in astronomy is, in general, orbital or rotational motion of an object in the direction opposite the rotation of its primary, that is the central object (right figure).

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Second

The second is the SI base unit of time, commonly understood and historically defined as 1/86,400 of a day – this factor derived from the division of the day first into 24 hours, then to 60 minutes and finally to 60 seconds each.

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Spain

Spain (España), officially the Kingdom of Spain (Reino de España), is a sovereign state mostly located on the Iberian Peninsula in Europe.

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Spitzer Space Telescope

The Spitzer Space Telescope (SST), formerly the Space Infrared Telescope Facility (SIRTF), is an infrared space telescope launched in 2003 and still operating as of 2018.

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Supernova

A supernova (plural: supernovae or supernovas, abbreviations: SN and SNe) is a transient astronomical event that occurs during the last stellar evolutionary stages of a star's life, either a massive star or a white dwarf, whose destruction is marked by one final, titanic explosion.

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Type Ib and Ic supernovae

Type Ib and Type Ic supernovae are categories of supernovae that are caused by the core collapse of massive stars.

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Unbarred spiral galaxy

An unbarred spiral galaxy is a type of spiral galaxy without a central bar, or one that is not a barred spiral galaxy.

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Uppsala General Catalogue

The Uppsala General Catalogue of Galaxies (UGC) is a catalogue of 12,921 galaxies visible from the northern hemisphere.

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William Herschel

Frederick William Herschel, (Friedrich Wilhelm Herschel; 15 November 1738 – 25 August 1822) was a German-born British astronomer, composer and brother of fellow astronomer Caroline Herschel, with whom he worked.

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Redirects here:

Caldwell 30, NGC7331, Spiral Galaxy NGC 7331.

References

[1] https://en.wikipedia.org/wiki/NGC_7331

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