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Messier Index/M108

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Messier 108 (also known as NGC 3556) is an edge-on w:spiral galaxy in the w:constellation Ursa Major. It was discovered by w:Pierre Méchain in 1781 or 1782.[4]

Messier 108
A w:Hubble Space Telescope (HST) image of M 108.
Credit: HST/w:NASA/w:ESA.
Observation data (w:J2000 epoch)
Constellationw:Ursa Major[1]
Right ascension11h 11m 31.0s[2]
Declination+55° 40′ 27″[2]
Redshift699 ± 9 km/s[2]
Distance14.1 Mpc[3]
TypeSB(s)cd[2]
Apparent dimensions (V)8′.7 × 2′.2[2]
Apparent magnitude (V)10.7[2]
Other designations
NGC 3556,[2] PGC 34030,[2] UGC 6225[2]
Amateur Image of Messier 108 Courtesy Hunter Wilson

References

  1. ↑ R. W. Sinnott, editor (1988). The Complete New General Catalogue and Index Catalogue of Nebulae and Star Clusters by J. L. E. Dreyer. Sky Publishing Corporation and Cambridge University Press. ISBN 0-933-34651-4. {{cite book}}: |author= has generic name (help)
  2. ↑ a b c d e f g h i "NASA/IPAC Extragalactic Database". Results for NGC 3556. Retrieved 2007-06-21.
  3. ↑ Q. Daniel Wang et al., [http://arxiv.org/abs/astro-ph/0308150v1 Chandra Observation of the Edge-on Galaxy NGC 3556 (M 108): Violent Galactic Disk-halo Interaction Revealed]
  4. ↑ Kepple, George Robert (1998). The Night Sky Observer's Guide, Volume 2. Willmann-Bell, Inc. p. 399. ISBN 0-943396-60-3. {{cite book}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)
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