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NGC 4782
NGC 4782 (lower) with NGC 4783 (upper)
Observation data (J2000 epoch)
Constellation	Corvus
Right ascension	12 54 35.7318
Declination	−12° 34′ 07.420″
Redshift	0.015437
Heliocentric radial velocity	4,628±19 km/s
Distance	238.7 ± 16.8 Mly (73.18 ± 5.15 Mpc)
Apparent magnitude (V)	11.7
Characteristics
Type	E0 pec
Size	~217,500 ly (66.69 kpc) (estimated)
Apparent size (V)	1.8′ × 1.7′
Other designations
HOLM 485A, MCG -02-33-050, PGC 43924, VV 201a

NGC 4782 is an elliptical galaxy in the constellation of Corvus. Its velocity with respect to the cosmic microwave background for is 4,962±30 km/s, which corresponds to a Hubble distance of 238.7 ± 16.8 Mly (73.18 ± 5.15 Mpc). However, nine non-redshift measurements give a closer distance of 189.86 ± 22.21 Mly (58.211 ± 6.811 Mpc). It was discovered by German-British astronomer William Herschel on 27 March 1786.

NGC 4782 along with NGC 4783 are listed together as Holm 485 in Erik Holmberg's A Study of Double and Multiple Galaxies Together with Inquiries into some General Metagalactic Problems, published in 1937. They are also listed as VV 201 in the Vorontsov-Vel'yaminov Interacting Galaxies catalogue. However, since NGC 4782 is about 31.1 Mly (9.54 Mpc) farther away than NGC 4783 (using Hubble distance), the grouping is purely optical.

The SIMBAD database lists NGC 4782 as a radio galaxy, i.e. it has giant regions of radio emission extending well beyond its visible structure.

Supernovae

Two supernovae have been observed in NGC 4782:

• SN 1956B (type unknown, mag. 18.6) was discovered by Fritz Zwicky on 8 April 1956.
• SN 2015B (type Ia, mag. 15) was discovered by the Italian Supernovae Search Project on 5 January 2015.

See also

• List of NGC objects (4001–5000)

References

1. ^ "Results for object NGC 4782". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 22 December 2024.
2. "Distance Results for NGC 4782". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 22 December 2024.
3. Seligman, Courtney. "New General Catalogue Objects: NGC 4782". Celestial Atlas. Retrieved 22 December 2024.
4. Holmberg, Erik (1937). "A Study of Double and Multiple Galaxies Together with Inquiries into some General Metagalactic Problems". Annals of the Observatory of Lund. 6: 1. Bibcode:1937AnLun...6....1H.
5. "NGC 4782". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 22 December 2024.
6. Kowal, C. T.; Sargent, W. L. W.; Zwicky, F. (1970). "The 1969 Palomar Supernova Search". Publications of the Astronomical Society of the Pacific. 82 (487): 736. Bibcode:1970PASP...82..736K. doi:10.1086/128951.
7. "SN 1956B". Transient Name Server. IAU. Retrieved 22 December 2024.
8. Leonini, S.; Conti, M.; Guerrini, G.; Rosi, P.; Tinjaca Ramirez, L. M.; Caimmi, M.; Tomasella, L.; Benetti, S.; Cappellaro, E.; Elias-Rosa, N.; Ochner, P.; Pastorello, A.; Terreran, G.; Tartaglia, L.; Turatto, M. (2015). "Supernova 2015B in NGC 4782 = PSN J12543553-1234186". Central Bureau Electronic Telegrams. 4046: 1. Bibcode:2015CBET.4046....1L.
9. "SN 2015B". Transient Name Server. IAU. Retrieved 22 December 2024.

External links

• Media related to NGC 4782 at Wikimedia Commons
• NGC 4782 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images

v t e Constellation of Corvus
List of stars in Corvus Corvus in Chinese astronomy
Stars	Bayer α (Alchiba) β (Kraz) γ (Gienah) δ (Algorab) ε (Minkar) ζ η Flamsteed 3 6 Variable R W RV SX TT TU TV TY (31 Crt) VV HR 4699 HD 103774 104067 111031 Other EC 11507-2253 Ross 695 DENIS-P J1228.2−1547 LHS 2520 Stargate VHS J1256–1257
Exoplanets HD 104067 b
Nebulae NGC 4361
Galaxies	NGC 4027 Other Antennae Galaxies (NGC 4038/4039) * Corvus A Dwarf Galaxy
Galaxy clusters NGC 4038 Group
Astronomical events SN 2004gt SN 2007sr
Category

• NGC objects
• Principal Galaxies Catalogue objects
• MCG objects
• Corvus (constellation)
• Astronomical objects discovered in 1786
• Discoveries by William Herschel
• Elliptical galaxies
• Radio galaxies