NGC 3049
Spiral Galaxy in the constellation Leo
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NGC 3049 is a barred spiral galaxy located in the constellation Leo. Its velocity relative to the cosmic microwave background is 1793 ± 24 km/s, which corresponds to a Hubble distance of 26.4 ± 1.9 Mpc (~86.1 million ly).[2] NGC 3049 was discovered by French astronomer Édouard Stephan in 1882.[3]
| NGC 3049 | |
|---|---|
NGC 3049, as seen during the Sloan Digital Sky Survey | |
| Observation data (J2000 epoch) | |
| Constellation | Leo |
| Right ascension | 09h 54m 49.5648s[1] |
| Declination | +09° 16′ 15.940″[1] |
| Redshift | 0.004965[1] |
| Heliocentric radial velocity | 1488 ± 1 km/s[1] |
| Distance | 75.46 ± 6.67 Mly (23.136 ± 2.045 Mpc)[1] |
| Apparent magnitude (V) | 12.1 |
| Apparent magnitude (B) | 12.9 |
| Surface brightness | 13.4 mag/am2 |
| Characteristics | |
| Type | SB(rs)ab[1] |
| Other designations | |
| UGC 5325, MCG +02-25-055, PGC 28590[1] | |
The luminosity class of NGC 3049 is I-II and it has a broad HI line. It also contains regions of ionized hydrogen and is a starburst galaxy. NGC 3049 is also a field galaxy, that is to say it does not belong to a cluster or group and is therefore gravitationally isolated.[2] NGC 3049 is a galaxy whose core shines in the field of ultraviolet. It is listed in the Markarian catalog under the reference Mrk 710 (MK 710).[4]
To date, 11 non-redshift measurements yield a distance of 23.136 ± 6.782 Mpc (~75.5 million ly),[3] which is within the Hubble distance. 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 3049 could be approximately 19 .2 kpc (~62,600 ly) if Hubble distance was used to calculate it.[3]