NGC 998

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NGC 998
NGC998 - SDSS DR14.jpg
SDSS image of NGC 998
Observation data (J2000 epoch)
Constellation Cetus
Right ascension 02h 37m 16.50891s [1]
Declination +07° 20′ 08.7169″ [1]
Redshift 0.02184 [2]
Helio radial velocity 6476 km/s [2]
Distance 303.7 ± 21.4  Mly (93.11 ± 6.56  Mpc) [3]
Apparent magnitude  (B)14.6 [2]
Absolute magnitude  (V)-23.46 +/- 0.51 [2]
Characteristics
Type S? [2]
Other designations
MCG +01-07-015, PGC 9934 [2]

NGC 998 is a spiral galaxy in the constellation Cetus. It is estimated to be 294 million light years from the Milky Way and has a diameter of approximately 90,000 ly. Together with NGC 997, it forms a gravitationally bound pair of galaxies. NGC 998 was discovered by astronomer Albert Marth on 10 November 1863 using a 48-inch telescope. [4] [5] [6]

Contents

See also

Related Research Articles

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NGC 995 is a lenticular galaxy located in the constellation Andromeda about 178 million light years from the Milky Way. It was discovered by the French astronomer Édouard Stephan in 1871.

<span class="mw-page-title-main">NGC 820</span> Spiral galaxy in the constellation Aries

NGC 820 is a spiral galaxy located in the constellation Aries about 210 million light-years from the Milky Way. It was discovered by British astronomer John Herschel in 1828.

<span class="mw-page-title-main">NGC 830</span> Barred lenticular galaxy in the constellation Cetus

NGC 830 is a barred lenticular galaxy in the constellation Cetus. It is estimated to be about 170 million light-years from the Milky Way and has a diameter of approximately 70,000 light years.

<span class="mw-page-title-main">NGC 900</span> Lenticular galaxy in the constellation Aries

NGC 900 is a lenticular galaxy located in the constellation Aries about 430 million light-years from the Milky Way. It was discovered by the German astronomer Albert Marth in 1864.

<span class="mw-page-title-main">NGC 940</span> Lenticular galaxy in the constellation Triangulum

NGC 940 is a lenticular galaxy in the constellation Triangulum. It is estimated to be 222 million light-years from the Milky Way and has a diameter of approximately 80,000 ly. NGC 940 was discovered by Heinrich d'Arrest.

<span class="mw-page-title-main">NGC 980</span> Lenticular galaxy in the constellation Andromeda

NGC 980 is a lenticular galaxy located in the constellation Andromeda about 256 million light years from the Milky Way. It was discovered by the German - British astronomer William Herschel in 1786.

<span class="mw-page-title-main">NGC 530</span> Lenticular galaxy in the constellation Cetus

NGC 530, also known as IC 106, is a lenticular galaxy in the constellation Cetus. It is approximately 226 million light years from the Milky Way and has a diameter of around 100,000 light years. The object was discovered on November 20, 1886 by the American astronomer Lewis A. Swift, who listed it as NGC 530, and rediscovered on November 16, 1887 by Guillaume Bigourdan, who listed it as IC 106.

<span class="mw-page-title-main">NGC 825</span> Spiral galaxy in the constellation Cetus

NGC 825 is an unbarred spiral galaxy in the constellation Cetus, estimated to be 154 million light-years away. The object was discovered by the astronomer Albert Marth on November 18, 1863.

<span class="mw-page-title-main">NGC 811</span> Elliptical galaxy in the constellation Cetus

NGC 811 is an object in the New General Catalogue. It is an elliptical galaxy located in the constellation Cetus about 700 million light-years from the Milky Way. It was discovered by the American astronomer Francis Leavenworth in 1886. However, it is usually misidentified as a different object, the spiral galaxy PGC 7905.

<span class="mw-page-title-main">NGC 912</span> Lenticular galaxy in the constellation Andromeda

NGC 912 is a compact lenticular galaxy located in the constellation Andromeda about 197 million light years from the Milky Way. It was discovered by French astronomer Édouard Stephan in 1878.

<span class="mw-page-title-main">NGC 913</span> Lenticular galaxy in the constellation Andromeda

NGC 913 is a lenticular galaxy located in the constellation Andromeda about 224 million light years from the Milky Way. It was discovered by French astronomer Édouard Stephan in 1878.

<span class="mw-page-title-main">NGC 781</span> Spiral galaxy in the constellation Aries

NGC 781 is a spiral galaxy in the constellation Aries. It is estimated to be about 154 million light years from the Milky Way and has a diameter of approximately 70,000 light years. NGC 781 was discovered on October 16, 1784 by the German-British astronomer William Herschel.

<span class="mw-page-title-main">NGC 991</span> Intermediate spiral galaxy in the constellation Cetus

NGC 991 is an intermediate spiral galaxy the constellation Cetus. This galaxy was discovered by astronomer William Herschel in 1785.

<span class="mw-page-title-main">NGC 938</span> Elliptical galaxy in the constellation Aries

NGC 938 is an elliptical galaxy located in the constellation Aries, approximately 184 million light years from the Milky Way. It was discovered by the Prussian astronomer Heinrich d'Arrest in 1863.

<span class="mw-page-title-main">NGC 534</span> Lenticular galaxy in the constellation Sculptor

NGC 534 is a lenticular galaxy located in the constellation of Sculptor about 260 million light years from the Milky Way. It was discovered by the British astronomer John Herschel in 1835.

<span class="mw-page-title-main">NGC 822</span> Elliptical galaxy in the constellation Phoenix

NGC 822 is an elliptical galaxy in the constellation Phoenix. It is estimated to be about 233 million light-years from the Milky Way and has a diameter of approximately 80,000 light-years. NGC 822 was discovered on September 5, 1834, by astronomer John Herschel.

<span class="mw-page-title-main">NGC 721</span> Barred Spiral galaxy in the constellation Andromeda

NGC 721 is a barred spiral galaxy located in the constellation Andromeda about 250 million light years from the Milky Way. It was discovered by the Prussian astronomer Heinrich d'Arrest in 1862.

<span class="mw-page-title-main">NGC 608</span> Lenticular galaxy in the constellation Triangulum

NGC 608 is a lenticular galaxy in the constellation Triangulum. It is estimated to be about 230 million light-years from the Milky Way. It has a diameter of approximately 130,000 light-years. NGC 608 was discovered on November 22, 1827, by astronomer John Herschel.

<span class="mw-page-title-main">NGC 713</span> Spiral galaxy in the constellation Cetus

NGC 713 is a spiral galaxy located in the constellation of Cetus about 234 million light years from the Milky Way. It was discovered by the American astronomer Francis Leavenworth in 1886.

<span class="mw-page-title-main">NGC 862</span> Elliptical galaxy in the constellation Phoenix

NGC 862 is an elliptical galaxy located in the constellation of Phoenix about 241 million light years from the Milky Way. It was discovered by the British astronomer John Herschel in 1834.

References

  1. 1 2 Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics . 616. A1. arXiv: 1804.09365 . Bibcode: 2018A&A...616A...1G . doi: 10.1051/0004-6361/201833051 .
  2. 1 2 3 4 5 6 "NGC 998". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2020-06-03.
  3. ↑ "Results for object NGC 0998 (NGC 998)". NASA/IPAC Extragalactic Database. California Institute of Technology. Retrieved 2020-06-03.
  4. ↑ "Revised NGC Data for NGC 998". spider.seds.org. Retrieved 2020-03-24.
  5. ↑ "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2020-03-24.
  6. ↑ Ford, Dominic. "The galaxy NGC 998 - In-The-Sky.org". in-the-sky.org. Retrieved 2020-03-24.


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