NGC 2613

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]

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☉
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]

See also

• List of NGC objects (2001–3000)