astro.wikisort.org - Galaxy

NGC 5523 is an unbarred spiral galaxy in the constellation of Boötes, registered in New General Catalogue (NGC).[1] The galaxy forms an equilateral triangle with NGC 5641 and NGC 5466 when observed using a telescope from the ground.[4]

NGC 5523
SDSS image of NGC 5523
Observation data (J2000 epoch)
Constellation	Boötes
Right ascension	14h 14m 52.31s[1]
Declination	+25° 19′ 3.41″[1]
Redshift	0.003488[1]
Helio radial velocity	1044 km/s[1]
Galactocentric velocity	1093 km/s[2]
Distance	49 ± 3 Mly (15.0 ± 1.0 Mpc)[2]
Apparent magnitude (V)	12.75[2]
Absolute magnitude (V)	-18.1[nb 1]
Characteristics
Type	SA(s)cd[3]
Apparent size (V)	4.6' x 1.3'[2]
Other designations
UGC 9119, MCG +04-34-008, PGC 50895[1]

Observation history

NGC 5523 was discovered by William Herschel on 19 May 1784 using 18.7-inch f/13 speculum telescope.[5][6] It was described as "faint, pretty large, pretty much extended 90°, 10th magnitude star to northwest".[5]

General

The galaxy was originally thought to be isolated due to its lack of interaction with other galaxies in the past 1 to 3 billion years. However, a 2016 study reported that some irregularities of the contour of the discs and nucleated bulge at the center of the galaxy suggested that the galaxy previously had soft collisions with other galaxies.[3]

Notes

References

На других языках

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[de] NGC 5523

NGC 5523 ist eine 12,2 mag helle Spiralgalaxie vom Hubble-Typ Sc im Sternbild Bärenhüter und etwa 49 Millionen Lichtjahre von der Milchstraße entfernt.

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- [en] NGC 5523

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[ru] NGC 5523

NGC 5523 (другие обозначения — UGC 9119, MCG 4-34-8, ZWG 133.18, KARA 621, IRAS14125+2533, PGC 50895) — спиральная галактика (Sc) в созвездии Волопас.

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