NGC 2613
Spiral galaxy in the constellation Pyxis
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NGC 2613 is a spiral galaxy in the southern constellation of Pyxis, next to the western constellation border with Puppis. It was discovered by the German-born astronomer William Herschel on November 20, 1784.[8] With an apparent visual magnitude of 10.5, the galaxy is faintly visible using a telescope with a 100 mm (4 in) aperture. It appears spindle-shaped as it is almost edge-on to observers on Earth.[9]
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| NGC 2613 | |
|---|---|
NGC 2613 imaged by ESO's 1.5-metre Danish telescope | |
| Observation data (J2000 epoch) | |
| Constellation | Pyxis |
| Right ascension | 08h 33m 22.841s[1] |
| Declination | −22° 58′ 25.21″[1] |
| Redshift | 0.005591[2] |
| Heliocentric radial velocity | 1,675 km/s[3] |
| Distance | 78 Mly (24 Mpc)[3] |
| Apparent magnitude (V) | 11.6[2] |
| Characteristics | |
| Type | SA(s)b[4] |
| Mass | (7.50±0.87)×1011 M☉.[5] M☉ |
| Size | 59.56 kiloparsecs (194,200 light-years) (diameter; 25.0 mag/arcsec2 B-band isophote)[2] |
| Apparent size (V) | 7.59′ × 1.70′[6] |
| Notable features | Edge-on galaxy |
| Other designations | |
| ESO 495- G 018, IRAS 08311-2248, UGCA 141, MCG -04-21-003, PGC 23997[7] | |
The morphological classification of NGC 2613 is SA(s)b,[4] indicating a spiral galaxy with no bar or ring, and moderately tightly-wound spiral arms. It is inclined by an angle of approximately 79° to the line of sight from the Earth[5] and is oriented with the long axis along a position angle of 133°.[4] The radius of neutral hydrogen in the galaxy is about 35 kpc,[10] and the mass of the neutral hydrogen is (8.73±0.32)×109 M☉. The galaxy has a combined dynamic mass of (7.50±0.87)×1011 M☉.[5]
NGC 2613 has an active galactic nucleus that is deeply embedded in obscuring gas and dust.[5] Emission data collected by the Very Large Array shows a feature resembling a tidal tail along the southeast side of the galaxy, which was most likely produced by an interaction with the small companion galaxy, ESO 495-G017, now located to the northwest of NGC 2613.[10]
One supernova has been observed in NGC 2613. SN 2023dtc (Type Ib, mag. 18.604) was discovered by ATLAS on 20 March 2023.[11]
