NGC 3647

NGC 3647
Observation data
ConstellationLeo
Right ascension11h 21m 32.6s[1]
Declination+02° 53′ 14″[1]
Redshift0.04985 0.00001
Heliocentric radial velocity14,573 km/s
Distance747 Mly
Apparent magnitude (V)15.6
Characteristics
TypeE
Size72,000 ly
Other designations
PGC 34816, 2MASX J11213813+0254119, Z 39-142, SDSS J112138+025411.4

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]

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.

References

  1. ^ a b c d "New General Catalog Objects: NGC 3600 - 3649". cseligman.com. Retrieved 2024-04-16.
  2. ^ "NGC 3647 - Elliptical Galaxy in Leo | TheSkyLive.com". theskylive.com. Retrieved 2024-04-16.
  3. ^ a b "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2024-04-16.
  4. ^ "NGC 3647". simbad.u-strasbg.fr. Retrieved 2024-04-16.
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