NGC 2935

NGC 2935
NGC 2935 imaged by Legacy Surveys
Observation data (J2000 epoch)
Constellation	Hydra
Right ascension	09h 36m 44.8615s[1]
Declination	−21° 07′ 41.53″[1]
Redshift	0.007575[1]
Heliocentric radial velocity	2271 ± 3 km/s[1]
Distance	90.97 ± 2.40 Mly (27.890 ± 0.736 Mpc)[1]
Apparent magnitude (V)	12.1[1]
Surface brightness	23.9 mag/arcsec^2
Characteristics
Type	(R')SAB(s)b[1]
Size	~185,200 ly (56.79 kpc) (estimated)[1]
Apparent size (V)	3.7′ × 2.8′[1]
Other designations
ESO 565- G 023, IRAS 09344-2054, UGCA 169, MCG -03-25-011, PGC 27351[1]

NGC 2935 is a large intermediate spiral galaxy located in the constellation Hydra. Its speed relative to the cosmic microwave background is 2,601 ± 23 km/s, which corresponds to a Hubble distance of 38.4 ± 2.7 Mpc (~125 million ly). It was discovered by German-British astronomer William Herschel on 20 March 1786.^[1][2]

NGC 2935 was used by Gérard de Vaucouleurs as a galaxy of morphological type (R2')SAB(s)b in his galaxy atlas. The luminosity class of NGC 2935 is II and it has a broad HI line. In addition, it is a star-forming burst galaxy.^[3]

To date, 29 studies and measurements based on redshift give a distance of 27.890 ± 3.962 Mpc (~91 million ly),^[4] which is outside the Hubble distance values. Note 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 2935 could be approximately 78, 1 kpc (~255,000 ly) if we used the Hubble distance to calculate it.^[5]

Observations from the Hubble Space Telescope have concluded that a star-forming disk is present around the core of NGC 2935. The size of its semi-major axis is estimated at 530 pc (~1730 light years) at the estimated distance of this galaxy.^[6]

Four supernovae have been discovered in NGC 2935:

• SN 1975F (type unknown, mag. 15) was discovered on 11 June 1975, by Yvonne Dunlap and Justus R. Dunlap of the Corralitos Observatory at Northwestern University.^[7][8]
• SN 1996Z (type Ia, mag. 16) was discovered on 16 May 1996 by Wayne Johnson.^[9][10]
• SN 2021mwj (type II, mag. 17.7) was discovered on 21 May 2021 by ATLAS. ^[11]
• SN 2021aczp (type II, mag. 18.9) was discovered on 1 November 2021 by ATLAS.^[12]

NGC 2935 is part of a small group of three galaxies named after it. The other two galaxies in the NGC 2935 group are NGC 2983 and NGC 2986.^[13]

• List of NGC objects (2001–3000)
• New General Catalogue
• List of spiral galaxies

• NGC 2935 at NASA/IPAC
• NGC 2935 at SIMBAD
• NGC_2935 at LEDA