NGC 3647

NGC 3647 is a small elliptical galaxy in the Leo constellation.^[2] The galaxy was first discovered on March 22, 1865 by Albert Marth who was a German astronomer.^[1] It is approximately 747 million light-years away.^[3] Due to its close proximity to five other elliptical galaxies, there was a bit of confusion for Marth to identify which object is NGC 3647.^[1]

NGC 3647
Observation data
Constellation	Leo
Right ascension	11h 21m 32.6s[1]
Declination	+02° 53′ 14″[1]
Redshift	0.04985 0.00001
Heliocentric radial velocity	14,573 km/s
Distance	747 Mly
Apparent magnitude (V)	15.6
Characteristics
Type	E
Size	72,000 ly
Other designations
PGC 34816, 2MASX J11213813+0254119, Z 39-142, SDSS J112138+025411.4

According to SIMBAD, it is identified as PGC 34816.^[4] But in HyperLeda and by NASA/IPAC databases, NGC 3647 is identified as PGC 34815.^[3] The correct designation for this article, according sources from wikidata is PGC 34816. There is no evidence whether this galaxy has an active nucleus or not.