Galaxy · constellation UMa
M 101
NGC 5457M 101MCG +09-23-028PGC 50063UGC 8981
Catalogue data
- Right ascension
- 14h 03m 12.5s
- Declination
- +54° 20' 56"
- Size
- 24.0′ × 23.1′
- Position angle
- 28°
- Magnitude
- 7.9 (V)
- Surface brightness
- 23.97 mag/arcsec²
- Hubble type
- SABc
- Difficulty
- 4/5
- Suggested techniques
- LRGB, RGB, OSC
- Data source
- OpenNGC
M102 may be a duplicate obs. of M101; see Sawyer, JRASC 41, Nos 7&8, 1947.
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