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Barred spiral galaxy in the constellation Libra From Wikipedia, the free encyclopedia
NGC 5885 is an intermediate barred spiral galaxy located in the constellation Libra. Its speed relative to the cosmic microwave background is 2,185 ± 13 km/s, which corresponds to a Hubble distance of 32.3 ± 2.3 Mpc (~105 million ly).[1] NGC 5885 was discovered by German-British astronomer William Herschel in 1784.[2]
| NGC 5885 | |
|---|---|
NGC 5885 as seen by the Sloan Digital Sky Survey (SDSS) | |
| Observation data (J2000 epoch) | |
| Constellation | Libra |
| Right ascension | 15h 15m 03s |
| Declination | -10° 05′ 09″ |
| Redshift | 0.006671 |
| Heliocentric radial velocity | 2,000 km/s |
| Distance | 105 Mly (32.23 Mpc) |
| Apparent magnitude (V) | 11.8 |
| Apparent magnitude (B) | 12.3 |
| Surface brightness | 23.37 mag/arcsec2 |
| Characteristics | |
| Type | SAB(r)c |
| Size | 3.5' x 3.1' |
| Other designations | |
| IRAS 15123-0954, PGC 54429, MCG -02-039-013 | |
The luminosity class of NGC 5885 is III and it has a broad HI line. It also contains regions of ionized hydrogen.[1] With a surface brightness equal to 14.39 mag/am2, we can qualify NGC 5885 as a low surface brightness galaxy (LSB). LSB galaxies are diffuse galaxies with a surface brightness less than one magnitude lower than that of the ambient night sky.[3]
To date, 11 non-redshift measurements yield a distance of 22.055 ± 5.687 Mpc[4] (~71.9 million ly),[5] which is outside the distance values of Hubble. Note that it is with the average value of independent measurements, when they exist, that the NASA/IPAC database calculates the diameter of a galaxy and that consequently the diameter of NGC 5885 could be approximately 37, 5 kpc (~122,000 ly) if we used the Hubble distance to calculate it.
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