NGC 495

Last updated
NGC 495
NGC495 - SDSS DR14.jpg
SDSS view of NGC 495
Observation data (J2000 [1] epoch)
Constellation Pisces [2]
Right ascension 01h 22m 56.0s [3]
Declination +33° 28′ 18″ [3]
Redshift +0.013679 ± 0.000073 [1]
Helio radial velocity (4073 ± 22) km/s [1]
Distance 184 Mly [4]
Apparent magnitude  (V)13.0 [2]
Characteristics
Type SB0-a [2]
Apparent size  (V)1.2' × 0.8' [2]
Other designations
PGC 5037, UGC 920, GC 278, MCG 5-4-35, 2MASS J01225595+3328171, H 3.156, [2] [1] [5]

NGC 495, also occasionally referred to as PGC 5037, UGC 920 or GC 278, is a barred spiral galaxy in the constellation Pisces. [2] It is located approximately 184 million light-years from the Solar System [4] and was discovered on 12 September 1784 by astronomer William Herschel. [5]

Contents

Observation history

The object was discovered by Herschel along with NGC 496 and NGC 499. He initially described the discovery as "Three [NGC 495 along with NGC 496 and 499], eS and F, forming a triangle.". As he observed the trio again the next night, he was able to make out more detail: "Three, forming a [right triangle]; the [right angle] to the south NGC 499, the short leg preceding [NGC 495], the long towards the north [NGC 496]. Those in the legs [NGC 495 and 496] the faintest imaginable; that at the rectangle [NGC 499] a deal larger and brighter, but still very faint." [6]

NGC 495 was later also observed by Heinrich d'Arrest and Herman Schultz [5] who first noted the object's accurate position. This position is also noted in the New General Catalogue. [6]

One supernova has been observed in NGC 495: SN 1999ej (type Ia, mag. 18.1). [7]

Description

John Dreyer, creator of the New General Catalogue, uses Herschel's initial notation to describe the position of NGC 495 ("very faint, small, 1st of 3"). [5]

Modern observations however call NGC 495 a bright central galaxy with an apparent size of about 1.2' by 0.8'. It also includes fainter outer extensions, about 2.6' by 1.5'. [5] The galaxy is also classified as a barred spiral galaxy of Hubble type SB0-a. [2]

See also

Related Research Articles

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<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 492</span> Barred spiral galaxy in the constellation Pisces

NGC 492, also occasionally referred to as PGC 4976 or GC 280, is a barred spiral galaxy in the constellation Pisces. It is located approximately 590 million light-years from Earth and was discovered on December 6, 1850 by Irish engineer Bindon Blood Stoney. Although John Dreyer, creator of the New General Catalogue, credits the discovery to astronomer William Parsons, 3rd Earl of Rosse, he notes that many of his claimed discoveries were made by one of his assistants. In the case of NGC 492, the discovery was made by Bindon Stoney, who discovered it along with NGC 486, NGC 490 and NGC 500 during his observation of NGC 488 using Lord Rosse's 72" telescope.

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NGC 494, also occasionally referred to as PGC 5035 or GC 282, is a barred spiral galaxy in the constellation Pisces. It is located approximately 227 million light-years from Earth and was discovered on 22 November 1827 by astronomer John Herschel. John Dreyer, creator of the New General Catalogue, described the galaxy as "very faint, pretty large, extended, 3 faint stars to south".

<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> Lenticular 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 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

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

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<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> Spiral galaxy in the constellation Andromeda

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<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 521</span> Spiral galaxy in the constellation Cetus

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

<span class="mw-page-title-main">NGC 522</span> Spiral galaxy in the constellation Pisces

NGC 522, also occasionally referred to as PGC 5218 or UGC 970, is a spiral galaxy located approximately 122 million light-years from the Solar System in the constellation Pisces. It was discovered on 25 September 1862 by astronomer Heinrich Louis d'Arrest.

<span class="mw-page-title-main">NGC 525</span> Lenticular 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> Lenticular galaxy in the constellation Sculptor

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References

  1. 1 2 3 4 "NGC 495" . Retrieved 2017-11-07.
  2. 1 2 3 4 5 6 7 "Revised NGC Data for NGC 495". spider.seds.org. Retrieved 2017-10-05.
  3. 1 2 "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2017-11-07.
  4. 1 2 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 4 5 "New General Catalog Objects: NGC 450 - 499". cseligman.com. Retrieved 2017-11-07.
  6. 1 2 "astronomy-mall.com/Adventures.In.Deep.Space/NGC%201-7840%20complete.htm". Astronomy Mall. Retrieved 2017-11-07.
  7. ↑ Transient Name Server entry for SN 1999ej. Retrieved 31 March 2023.


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