Global InformationNGC 4017 information
| NGC 4017 | |
|---|---|
 | |
| Observation data (J2000 epoch) | |
| Constellation | Coma Berenices |
| Right ascension | 11h 58m 45s |
| Declination | +27° 27′ 08″ |
| Apparent magnitude (B) | 13.5 |
| Surface brightness | 22.48 mag/arcsec^2 |
| Characteristics | |
| Type | SAbc |
NGC 4017 is an intermediate spiral radio galaxy located in the constellation Coma Berenices. Its speed relative to the cosmic microwave background is 3,748 ± 21 km/s, which corresponds to a Hubble distance of 55.3 ± 3.9 Mpc (~180 million ly).[1] NGC 4017 was discovered by German-British astronomer William Herschel in 1785.[2]
It is difficult to see a bar in the center of NGC 4017 in the image obtained from the SDSS survey data. The intermediate spiral classification from the NASA/IPAC database seems to fit this galaxy better.[1]
The luminosity class of NGC 4017 is II-III and it has a broad HI line.[3]
To date, four non-redshift measurements yield a distance of 73.850 ± 14.580 Mpc (~241 million ly), which is just outside the Hubble distance values. Note, however, 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 4017 could be approximately 29.3 kpc (~95,600 ly) if we used the Hubble distance to calculate it.[3][1]
- ^ a b c "By Name | NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu. Retrieved 2024-06-07.
- ^ astrovalleyfield.ca http://astrovalleyfield.ca/AstronomieCompl/NGC%20et%20autres/WolfgangS/N4000_exc_web.htm. Retrieved 2024-06-07.
{{cite web}}: Missing or empty|title=(help) - ^ a b "HyperLeda -object description". atlas.obs-hp.fr. Retrieved 2024-06-07.