NGC 998

NGC 998
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]
Heliocentric 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]}

See also

• List of NGC objects (1–1000)

References

1. 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. "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.

External links

• Media related to NGC 998 at Wikimedia Commons