NGC 521

Last updated
NGC 521
NGC521 Spiral Galaxy from the Mount Lemmon SkyCenter Schulman Telescope courtesy Adam Block.jpg
NGC 521 as seen on an image recorded the Mount Lemmon Observatory using the 32-inch Schulman reflecting telescope in 2015
Observation data (J2000 [1] epoch)
Constellation Cetus [2]
Right ascension 01h 24m 33.8s [3]
Declination +01° 24′ 33.8″ [3]
Redshift 0.016902 [1]
Heliocentric radial velocity 5024.3 km/s [1]
Distance 224 Mly [4]
Apparent magnitude  (V)11.7 [2]
Apparent magnitude  (B)12.5 [2]
Characteristics
Type SBbc [2]
Apparent size  (V)2.7' × 2.4' [2]
Other designations
PGC 5190, UGC 962, GC 304, MGC +00-04-118, 2MASS J01243377+0143532, h 115, IRAS 01219+0128 [1] [5]
NGC 521's location in the Cetus constellation Cetus y Mira.png
NGC 521's location in the Cetus constellation

NGC 521, also occasionally referred to as PGC 5190 or UGC 962, is a barred spiral galaxy located approximately 224 million light-years from the Solar System [4] in the constellation Cetus. [2] It was discovered on 8 October 1785 by astronomer William Herschel. [5]

Contents

Observation history

Historic observation

Herschel described his discovery as "faint, pretty large, irregular round, brighter middle". Further observations were made by both his son, John Herschel, who simply noted "big" on his first and "very faint" on his second observation, as well as R. J. Mitchell, who noted "pretty big, spiral galaxy, disc enveloped in faint outlying neby and looks like an unresolved cluster." [6] NGC 521 was later catalogued by John Louis Emil Dreyer in the New General Catalogue, where the galaxy was described as "faint, pretty large, round, gradually brighter middle". [5]

Supernovae

A total of three supernovae have been assigned to NGC 521, with SN 1966G being the first to be observed in 1966, [7] followed by SN 1982O in 1982 [8] and the most recent being SN 2006G in 2006. [9]

Description

The galaxy's large apparent size can be attributed to the fact that it is face-on. Despite its size, it only has an apparent visual magnitude of 11.7. It can be classified as spiral galaxy of type SBbc using the Hubble Sequence. [2] The object's distance of roughly 220 million light-years from the Solar System can be estimated using its redshift and Hubble's law. [4]

See also

Related Research Articles

<span class="mw-page-title-main">NGC 500</span> Galaxy in the constellation Pisces

NGC 500 is a type E-SO lenticular galaxy located in the Pisces constellation. It has an apparent size of .8 by .6 arcminutes and an apparent magnitude of 14.2. It was first discovered in 1850 by Bindon Blood Stoney during his time at Birr Castle in Ireland.

<span class="mw-page-title-main">NGC 174</span> Barred spiral or lenticular galaxy in Sculptor

NGC 174 is a barred spiral or lenticular galaxy around 159 million light-years away in the constellation Sculptor. It was discovered on 27 September 1834 by astronomer John Herschel.

<span class="mw-page-title-main">NGC 485</span> Spiral galaxy in the constellation Pisces

NGC 485, also commonly referred to as PGC 4921 or GC 270, is a spiral galaxy in the constellation Pisces. It is located approximately 86 million light-years from Earth and was discovered on January 8, 1828 by astronomer William Herschel. It was later also observed by Heinrich d'Arrest and Herman Schultz. When NGC 485 was originally categorized in the New General Catalogue by John Louis Eil Dreyer in 1888, it was incorrectly described as a "considerably faint, pretty large, round, 8th magnitude star 3 1/2 arcmin to southwest".

<span class="mw-page-title-main">NGC 493</span> Galaxy in the constellation Cetus

NGC 493, also occasionally referred to as PGC 4979 or GC 281, is a barred spiral galaxy in the constellation Cetus. It is located approximately 90 million light-years from Earth and was discovered on December 20, 1786 by astronomer William Herschel. It was later also observed by his son, John Herschel. John Dreyer, creator of the New General Catalogue, described the galaxy as "very faint, large, much extended 60°" with "a little brighter middle".

<span class="mw-page-title-main">NGC 495</span> Galaxy in the constellation Pisces

NGC 495, also occasionally referred to as PGC 5037, UGC 920 or GC 278, is a barred spiral galaxy in the constellation Pisces. It is located approximately 184 million light-years from the Solar System and was discovered on 12 September 1784 by astronomer William Herschel.

<span class="mw-page-title-main">NGC 496</span> Spiral galaxy in the constellation Pisces

NGC 496, also occasionally referred to as PGC 5037, UGC 927 or GC 288, is a spiral galaxy in the constellation Pisces. It is located approximately 250 million light-years from the Solar System and was discovered on 12 September, 1784 by astronomer William Herschel.

<span class="mw-page-title-main">NGC 499</span> Galaxy in the constellation Pisces

NGC 499, also occasionally referred to as PGC 5060, IC 1686 or GC 289, is a lenticular galaxy in the constellation Pisces. It is located approximately 197 million light-years from the Solar System and was discovered on 12 September, 1784 by astronomer William Herschel.

<span class="mw-page-title-main">NGC 501</span> Elliptical galaxy in the constellation Pisces

NGC 501, also occasionally referred to as PGC 5082 or GC 284, is an elliptical galaxy in the constellation Pisces. It is located approximately 224 million light-years from the Solar System and was discovered on 28 October 1856 by Irish astronomer R. J. Mitchell.

<span class="mw-page-title-main">NGC 503</span> Elliptical galaxy in the constellation Pisces

NGC 503, also occasionally referred to as PGC 5086 or GC 5169, is an elliptical galaxy in the constellation Pisces. It is located approximately 265 million light-years from the Solar System and was discovered on 13 August 1863 by German astronomer Heinrich Louis d'Arrest.

<span class="mw-page-title-main">NGC 504</span> Lenticular galaxy in the constellation Pisces

NGC 504, also occasionally referred to as PGC 5084 or UGC 935, is a lenticular galaxy located approximately 189 million light-years from the Solar System in the constellation Pisces. It was discovered on 22 November 1827 by astronomer John Herschel. The object was listed twice in the General Catalogue, precursor of the New General Catalogue, as both GC 291 and GC 292.

<span class="mw-page-title-main">NGC 508</span> Galaxy in the constellation Pisces

NGC 508, also occasionally referred to as PGC 5099 or UGC 939, is an elliptical galaxy in the constellation Pisces. It is located approximately 247 million light-years from the Solar System and was discovered on 12 September 1784 by British astronomer William Herschel.

<span class="mw-page-title-main">NGC 511</span> Elliptical galaxy in the constellation Pisces

NGC 511, also occasionally referred to as PGC 5103 or UGC 936, is an elliptical galaxy in the constellation Pisces. It is located approximately 499 million light-years from the Solar System and was discovered on 26 October 1876 by French astronomer Édouard Stephan.

<span class="mw-page-title-main">NGC 512</span> Spiral galaxy in the constellation Andromeda

NGC 512, also occasionally referred to as PGC 5132 or UGC 944, is a spiral galaxy in the constellation Andromeda. It is located approximately 217 million light-years from the Solar System and was discovered on 17 November 1827 by astronomer John Herschel.

<span class="mw-page-title-main">NGC 513</span> Galaxy in the constellation Andromeda

NGC 513, also occasionally referred to as PGC 5174 or UGC 953, is a spiral galaxy in the constellation Andromeda. It is located approximately 262 million light-years from the Solar System and was discovered on 13 September 1784 by astronomer William Herschel.

<span class="mw-page-title-main">NGC 515</span> Galaxy in the constellation Pisces

NGC 515, also occasionally referred to as PGC 5201 or UGC 956, is a lenticular galaxy located approximately 228 million light-years from the Solar System in the constellation Pisces. It was discovered on 13 September 1784 by astronomer William Herschel.

<span class="mw-page-title-main">NGC 517</span> Lenticular galaxy in the constellation Pisces

NGC 517, also occasionally referred to as PGC 5214 or UGC 960, is a lenticular galaxy located approximately 188 million light-years from the Solar System in the constellation Pisces. It was discovered on 13 September 1784 by astronomer William Herschel.

<span class="mw-page-title-main">NGC 519</span> Elliptical galaxy in the constellation Cetus

NGC 519, also occasionally referred to as PGC 5182, is an elliptical galaxy located approximately 242 million light-years from the Solar System in the constellation Cetus. It was discovered on 20 November 1886 by astronomer Lewis Swift.

<span class="mw-page-title-main">NGC 525</span> Galaxy in the constellation Pisces

NGC 525, also occasionally referred to as PGC 5232 or UGC 972 is a lenticular galaxy located approximately 95.6 million light-years from the Solar System in the constellation Pisces. It was discovered on 25 September 1862 by astronomer Heinrich d'Arrest.

<span class="mw-page-title-main">NGC 527</span> Galaxy in the constellation Sculptor

NGC 527, also occasionally referred to as PGC 5128 or PGC 5141, is a lenticular galaxy located approximately 259 million light-years from the Solar System in the constellation Sculptor. It was discovered on 1 September 1834 by astronomer John Herschel.

<span class="mw-page-title-main">NGC 918</span> Barred spiral galaxy in the constellation Aries

NGC 918 is a barred spiral galaxy in the constellation Aries, about 67 million light years from the Milky Way. It was discovered by John Herschel on Jan 11, 1831.

References

  1. 1 2 3 4 "NGC 521". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2017-12-09.
  2. 1 2 3 4 5 6 7 "Revised NGC Data for NGC 521". spider.seds.org. Retrieved 2017-10-05.
  3. 1 2 "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2017-10-05.
  4. 1 2 3 An object's distance from Earth can be determined using Hubble's law: v=Ho is Hubble's constant (70±5 (km/s)/Mpc). The relative uncertainty Δd/d divided by the distance is equal to the sum of the relative uncertainties of the velocity and v=Ho
  5. 1 2 3 "New General Catalog Objects: NGC 500 - 549". cseligman.com. Retrieved 2017-10-16.
  6. ↑ "astronomy-mall.com/Adventures.In.Deep.Space/NGC%201-7840%20complete.htm".
  7. ↑ "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2018-01-24.
  8. ↑ "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2018-01-24.
  9. ↑ "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2018-01-24.


This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.