NGC 2008
| NGC 2008 | |
|---|---|
 | |
| Observation data (J2000 epoch) | |
| Constellation | Pictor |
| Right ascension | 05h 35m 03s |
| Declination | -50° 58’ 00” |
| Distance | 425 million |
| Apparent magnitude (B) | 14.64 |
| Surface brightness | 23.27 mag/arcsec2 |
| Other designations | |
| |
NGC 2008 is a distant spiral galaxy located in the constellation Pictor. Its speed relative to the cosmic microwave background is 10,367 ± 11 km/s, which corresponds to a Hubble distance of 153 ± 11 Mpc (∼499 million ly).[1] NGC 2008 was discovered by British astronomer John Herschel in 1834. The luminosity class of NGC 2008 is III.[1]
To date, four non-redshift measurements yield a distance of 135.750 ± 10.521 Mpc (∼443 million ly), which is within the Hubble distance range. Note, however, that it is with the average value of independent measurements, when they exist, that the NASA/IPAC database[2] calculates the diameter of a galaxy and that consequently the diameter of NGC 2008 could be approximately 77 kpc (∼253,000 ly)[2] if we used the Hubble distance to calculate it.[2]
According to Soares and his colleagues, NGC 2007 and NGC 2008 form a pair of galaxies. However, the Hubble distance of NGC 2007 is 67.57 ± 4.73 Mpc (∼220 million ly). These two galaxies therefore form a purely optical pair.[3]
See also[edit]
External links[edit]
References[edit]
- ^ a b "By Name | NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu. Retrieved 2024-06-02.
- ^ a b c astrovalleyfield.ca http://astrovalleyfield.ca/AstronomieCompl/NGC%20et%20autres/WolfgangS/N2000_exc_web.htm. Retrieved 2024-06-02.
{{cite web}}: Missing or empty|title=(help) - ^ "New General Catalog Objects: NGC 2000 - 2049". cseligman.com. Retrieved 2024-06-02.