Key facts
- Constellation
- Triangulum
- Right ascension
- 02 28 14.5
- Declination
- +31 ° 18 ′ 42 ″
- Redshift
- 0.016652 ± 0.000020
- Heliocentric radial velocity
- 4,992 ± 6 km/s
- Distance
- 159 ± 30 Mly (48.7 ± 9.3 Mpc )
- Type
- Sbc
- Apparent size v
- 3.9 ′ × 0.8 ′
- Notable features
- Seyfert galaxy
via Wikipedia infobox
Wikidata facts
- Instance of
- spiral galaxy
- Constellation
- Triangulum
- Distance from Earth
- 67.26
- Image
- NGC 931 imaged by Legacy Surveys.jpg
Show 13 more facts
- Commons category
- NGC 931
- time of discovery or invention
- 1865-09-26
- discoverer or inventor
- Heinrich Louis d'Arrest
- catalog code
- Gaia DR2 132514485705558912
- radial velocity
- 4858
- redshift
- 0.0164
- galaxy morphological type
- Sbc
- apparent magnitude
- 13.505
- right ascension
- 37.06028770103240
- declination
- 31.31151879841050
- epoch
- J2000.0
- right ascension component of proper motion
- -0.349
- declination component of proper motion
- 0.223
via Wikidata · CC0
~3 min read
Encyclopedic overview
NGC 931 is a spiral galaxy located in the constellation Triangulum. It is located at a distance of circa 200 million light-years from Earth, which, given its apparent dimensions, means that NGC 931 is about 200,000 light years across. It was discovered by Heinrich d'Arrest on September 26, 1865. It is classified as a Seyfert galaxy.
Characteristics
Excerpted from Wikipedia’s “NGC 931” article, available under the CC BY-SA 4.0 licence.
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