| NGC 4565 | |
|---|---|
 NGC 4565 | |
| Observation data (J2000 epoch) | |
| Constellation | Coma Berenices |
| Right ascension | 12h 36m 20.8s[1] |
| Declination | +25° 59′ 16″[1] |
| Redshift | 0.004103[1] |
| Heliocentric radial velocity | 1230 ± 5 km/s[1] |
| Distance | 42.7 ± 12 Mly (13.1 ± 3.7 Mpc)[2] 53 ± 4 Mly (16.2 ± 1.3 Mpc)[3] |
| Apparent magnitude (V) | 10.42[1] |
| Characteristics | |
| Type | SA(s)b?[1] |
| Apparent size (V) | 15.90′ × 1.85′[1] |
| Other designations | |
| UGC 7772,[1] PGC 42038,[1] Caldwell 38 | |
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NGC 4565 (also known as the Needle Galaxy or Caldwell 38) is an edge-on spiral galaxy about 30 to 50 million light-years away in the constellation Coma Berenices.[2] It lies close to the North Galactic Pole and has a visual magnitude of approximately 10. It is known as the Needle Galaxy for its narrow profile.[4] First recorded in 1785 by William Herschel, it is a prominent example of an edge-on spiral galaxy.[5]
- ^ a b c d e f g h i "Results for NGC 4565". NASA/IPAC Extragalactic Database. Retrieved 2006-10-12.
- ^ a b "Distance Results for NGC 4565". NASA/IPAC Extragalactic Database. Retrieved 2010-05-02.
- ^ Jensen, Joseph B.; Tonry, John L.; Barris, Brian J.; Thompson, Rodger I.; et al. (February 2003). "Measuring Distances and Probing the Unresolved Stellar Populations of Galaxies Using Infrared Surface Brightness Fluctuations". Astrophysical Journal. 583 (2): 712–726. arXiv:astro-ph/0210129. Bibcode:2003ApJ...583..712J. doi:10.1086/345430. S2CID 551714.
- ^ "NGC4565 at". apod.nasa.gov.
- ^ Spiral Galaxy NGC 4565 at http://www.eso.org/public/images/eso0525a/