Cosmic Exploration · galaxy
Andromeda (M31)
Barred spiral · 2.54 million ly
- Vz (km/s)
- 45.1
- Motion
- Infalling
- Morphology
- Barred spiral
- Mass
- 2.9835e+42
- Transverse velocity (km/s)
- 17
- Type
- Galaxy
- Vy (km/s)
- -76.3
- Dec (deg)
- 41.26875
- Distance from Earth
- 2540000
- Diameter (ly)
- 152000
- Radial velocity (km/s)
- -110
- RA (deg)
- 10.68471
- Vx (km/s)
- 66.1
- Subgroup
- Andromeda
- Coordinates
- 00h 42m 44.3s +41° 16′ 07.5″ · M 31 via Sc
Notes
The largest galaxy in the Local Group and the most distant thing visible to the naked eye. Hubble's Cepheids in it proved in 1924 that the spiral nebulae are other galaxies; it is approaching us at 110 km/s and will merge with the Milky Way in about 4.5 billion years.
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