Astronomy:NGC 3647
From HandWiki
| NGC 3647 | |
|---|---|
| File:NGC3647 - SDSS DR14.jpg | |
| Observation data | |
| Constellation | Leo |
| Right ascension | Template:Ra[1] |
| Declination | +02° 53′ 14″[1] |
| Redshift | 0.04985 0.00001 |
| Helio 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 | |
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
- ↑ 1.0 1.1 1.2 1.3 "New General Catalog Objects: NGC 3600 - 3649". https://cseligman.com/text/atlas/ngc36.htm.
- ↑ "NGC 3647 - Elliptical Galaxy in Leo | TheSkyLive.com". https://theskylive.com/sky/deepsky/ngc3647-object.
- ↑ 3.0 3.1 "Your NED Search Results". https://ned.ipac.caltech.edu/cgi-bin/objsearch?search_type=Obj_id&objid=26229&objname=1&img_stamp=YES&hconst=73.0&omegam=0.27&omegav=0.73&corr_z=1.
- ↑ "NGC 3647". https://simbad.u-strasbg.fr/simbad/sim-basic.
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