NGC 5530
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| NGC 5530 | |
|---|---|
 NGC 5530 imaged by the Hubble Space Telescope | |
| Observation data (J2000 epoch) | |
| Constellation | Lupus |
| Right ascension | 14h 18m 27.30s[1] |
| Declination | −43° 23′ 22.0″[1] |
| Redshift | 0.003979 ± 0.000007 [1] |
| Heliocentric radial velocity | 1,193 ± 2 km/s[1] |
| Distance | 39.7 ± 4.6 Mly (12.2 ± 1.4 Mpc)[1] |
| Apparent magnitude (V) | 11.0 [2] |
| Characteristics | |
| Type | SA(rs)c [1] |
| Size | ~74,100 ly (22.72 kpc) (estimated)[1] |
| Apparent size (V) | 4.2′ × 1.9′ [1] |
| Other designations | |
| ESO 272- G 003, IRAS 14152-4309, MCG -07-29-013, PGC 51106[1] | |
NGC 5530 is a spiral galaxy located in the constellation Lupus. It is located at a distance of about 40 million light years from Earth, which, given its apparent dimensions, means that NGC 5530 is about 60,000 light years across.[1] It was discovered by John Herschel on April 7, 1837.[3]
NGC 5530 is a member of the NGC 5643 Group, named after NGC 5643.[4]
NGC 5530 has a flocculent spiral pattern, with multiple spiral arms and spiral fragments with many knots.[5][6] Dust lanes associated with spiral arms are visible across the disk.[5] The galaxy has a small nucleus[5] with a magnitude 13 field star superimposed. In H-alpha images some faint HII regions are visible, but are hard to distinguish among the starry field.[7] In blue filter the galaxy has an inner pseudoring which has a diameter of 4.6 kpc and accounts for 14% of the total H-alpha emission of the galaxy. The star formation rate of the galaxy is estimated to be 1.0±0.4 M☉ based on H-alpha emission.[8] In the nucleus lies a nuclear star cluster which has a radius of 2.6 arcseconds.[9]
