| NGC 5495 | |
|---|---|
 NGC 5495 imaged by theHubble Space Telescope | |
| Observation data (J2000epoch) | |
| Constellation | Hydra |
| Right ascension | 14h 12m 23.3522s[1] |
| Declination | −27° 06′ 29.777″[1] |
| Redshift | 0.022472[1] |
| Heliocentric radial velocity | 6,737±9 km/s[1] |
| Distance | 336.2 ± 23.5 Mly (103.08 ± 7.22 Mpc)[1] |
| Apparent magnitude (V) | 13.5 |
| Apparent magnitude (B) | 13.53 |
| Surface brightness | 23.02 mag/arcsec^2 |
| Characteristics | |
| Type | (R')SAB(r)c[1] |
| Size | ~259,500 ly (79.56 kpc) (estimated)[1] |
| Apparent size (V) | 1.4′ × 1.1′[1] |
| Other designations | |
| ESO 510-10, AM 1409-265,IRAS 14095-2652,MCG -04-34-001,PGC 50729[1] | |
NGC 5495 is a very largebarred spiral galaxy located in theconstellation Hydra.[2] Its speed relative to thecosmic microwave background is 6,989 ± 20 km/s, corresponding to aHubble distance of 103.1 ± 7.2 Mpc (~336 million ly).[3] NGC 5495 was discovered by British astronomerJohn Herschel on 13 May 1834.[4]
Theluminosity class of NGC 5495 is III and it has a broad HI line. It also contains regions ofionized hydrogen, and is classified as an activeSeyfert 2 type galaxy.[1]
Additionally, NGC 5495 is known to host amegamaser.[5] Further evidence shows signs of H2O maser emission,[6] detected via 70mNASA Deep Space Network antennas inAustralia andSpain. The source spectra in NGC 5495 is said to have an emission signature originating from itsaccretion disk with anorbital velocity of ~400 km s−1.[7]
The galaxy was showcased as ESA/HUBBLE's Picture of the Week on 26 September 2022.[8] The magnitude 12.2 star near the galaxy's Eastern edge is catalogued asTYC 6738-702-1.[9]
