| NGC 5866 | |
|---|---|
 NGC 5866, as observed by the Hubble Space Telescope (HST) | |
| Observation data (J2000 epoch) | |
| Constellation | Draco |
| Right ascension | 15h 06m 29.5s[1] |
| Declination | +55° 45′ 48″[1] |
| Redshift | 0.002518±0.000017[1] |
| Heliocentric radial velocity | 755±5 km/s[1] |
| Galactocentric velocity | 901±8 km/s[1] |
| Distance | 50 ± 3 Mly (15.3 ± 0.7 Mpc)[2] |
| Apparent magnitude (V) | 9.9[3] |
| Characteristics | |
| Type | SA0+; Sy[1][4] |
| Size | 23.44 kiloparsecs (76,000 light-years) (diameter; D25 isophote) |
| Apparent size (V) | 4.7′ × 1.9′[1] |
| Notable features | The galaxy is viewed edge on |
| Other designations | |
| Spindle Galaxy,[5] UGC 9723,[1] PGC 53933[1] | |
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NGC 5866 (also called the Spindle Galaxy) is a lenticular galaxy in the constellation Draco. NGC 5866 was most likely discovered by Pierre Méchain or Charles Messier in 1781, and independently found by William Herschel in 1788. Measured orbital velocities of its globular cluster system[6] imply that dark matter makes up only 34%±45% of the mass within 5 effective radii, a notable paucity.
- ^ a b c d e f g h i "NASA/IPAC Extragalactic Database". Results for NGC 5866. Retrieved 31 July 2024.
- ^ J. L. Tonry; A. Dressler; J. P. Blakeslee; E. A. Ajhar; et al. (2001). "The SBF Survey of Galaxy Distances. IV. SBF Magnitudes, Colors, and Distances". The Astrophysical Journal. 546 (2): 681–693. arXiv:astro-ph/0011223. Bibcode:2001ApJ...546..681T. doi:10.1086/318301. S2CID 17628238.
- ^ "Messier 102". SEDS Messier Catalog. Retrieved 30 April 2022.
- ^ De Vaucouleurs, Gerard; De Vaucouleurs, Antoinette; Corwin, Herold G.; Buta, Ronald J.; Paturel, Georges; Fouque, Pascal (1991). Third Reference Catalogue of Bright Galaxies. Bibcode:1991rc3..book.....D.
- ^ "NGC 5866". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 30 October 2006.
- ^ Adebusola B. Alabi; Duncan A. Forbes; Aaron J. Romanowsky; Jean P. Brodie; Jay Strader; Joachim Janz; Christopher Usher; Lee R. Spitler; Sabine Bellstedt; Anna Ferre-Mateu (20 May 2016). "The SLUGGS survey: the mass distribution in early-type galaxies within five effective radii and beyond". Monthly Notices of the Royal Astronomical Society. 460 (4): 3838–3860. arXiv:1605.06101. Bibcode:2016MNRAS.460.3838A. doi:10.1093/mnras/stw1213. S2CID 55054073.