NGC 7647

NGC 7647
NGC 7647
Observation data (J2000 epoch)
Constellation	Pegasus
Right ascension	23h 23m 57.4331s
Declination	+16° 46′ 38.122″
Redshift	0.041091
Heliocentric radial velocity	12,319 km/s
Distance	575 Mly
Characteristics
Type	cD;E;BrCIG
Size	~315,400 ly (96.70 kpc) (estimated)
Other designations
	Abell 2589 [ZAC2011] BCG, GIN 681, PGC 71325, CGCG 0454-063, MCG +03-59-055, PGC 71335
	References:

NGC 7647 is a giant elliptical galaxy of type cD located in the constellation Pegasus. The redshift of the galaxy is (z) 0.041 and it was discovered by German-British astronomer William Herschel on 29 November 1785.

Supernovae

Two supernovae have been observed in NGC 7647:

SN 2009hi (Type Ia, mag. 18.0) was discovered by Kōichi Itagaki, and independently by the Lick Observatory Supernova Search (LOSS), on 10 July 2009.
SN 2026abud (Type Ia, mag. 20.1) was discovered by GOTO on 14 September 2026.

References

1 2 3 4 5 6 7 8 "NED Search results for NGC 7647". NASA/IPAC Extragalactic Database. Retrieved 2025-12-29.
↑ "NGC 7647 - Elliptical Galaxy in Pegasus". Retrieved 29 December 2025.
↑ "New General Catalog Objects: NGC 7600 - 7649". Retrieved 29 December 2025.
↑ Nakano, S.; Itagaki, K.; Li, W.; Cenko, S. B.; Filippenko, A. V. (2009). "Supernova 2009hi in NGC 7647". Central Bureau Electronic Telegrams (1872): 1. Bibcode:2009CBET.1872....1N.
↑ "SN 2009hi". Transient Name Server. IAU. Retrieved 5 March 2026.
↑ "SN 2026abud". Transient Name Server. IAU. Retrieved 23 September 2026.

[ned-1] 1 2 3 4 5 6 7 8 "NED Search results for NGC 7647". NASA/IPAC Extragalactic Database. Retrieved 2025-12-29.

[2] "NGC 7647 - Elliptical Galaxy in Pegasus". Retrieved 29 December 2025.

[3] "New General Catalog Objects: NGC 7600 - 7649". Retrieved 29 December 2025.

[CBET1872-4] Nakano, S.; Itagaki, K.; Li, W.; Cenko, S. B.; Filippenko, A. V. (2009). "Supernova 2009hi in NGC 7647". Central Bureau Electronic Telegrams (1872): 1. Bibcode:2009CBET.1872....1N.

[TNS-2009hi-5] "SN 2009hi". Transient Name Server. IAU. Retrieved 5 March 2026.

[TNS-2026abud-6] "SN 2026abud". Transient Name Server. IAU. Retrieved 23 September 2026.

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7801 to 7840	7806 7808 7812 7814 7816 7822 7828 7829 7836 7837 7838 7840
Astronomical catalog List of NGC objects 7001–7840

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