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Astronomical data · SIMBAD
- Object type
- AG?
- Redshift
- z = 0.004597072736708174
- Morphology
- SA
- Coordinates
- RA 137.5839° · Dec 7.0380°
via SIMBAD · CDS Strasbourg
Key facts
- Constellation
- Cancer
- Right ascension
- 09 10 20.112
- Declination
- +07 ° 02 ′ 16.53 ″
- Redshift
- 0.004 500 ± 0.000 003 34
- Heliocentric radial velocity
- 1,316.4 ± 13.4 km/s
- Distance
- 67 Mly (20.5 Mpc )
- Type
- SAa or SA(r)ab
- Size
- ~79,000 ly (24.23 kpc ) (estimated)
- Apparent size v
- 4.3 ′ × 3.3 ′
via Wikipedia infobox
~2 min read
Encyclopedic overview
NGC 2775, also known as Caldwell 48, is a spiral galaxy in the constellation Cancer. It is 67 million light-years (20.5 megaparsecs) away from the Milky Way. It was discovered by German-British astronomer William Herschel on 19 December 1783.
This object has a morphological classification of SA(r)ab, which indicates an unbarred spiral galaxy (SA) with a prominent ring structure (r) and flocculent, tightly wound spiral arms (ab). The galaxy is inclined by an angle of 44° to the line of sight from the Earth. The galactic nucleus is not active and the large nuclear bulge, which extends out to an angular radius of 0.4′, is relatively gas free. An explanation for the latter could be a high supernova rate. Although star formation is taking place in the dusty outer ring, NGC 2775 does not display any current starburst activity, and the galactic nucleus is virtually free of any star formation whatsoever.
Excerpted from Wikipedia’s “Q249820” article, available under the CC BY-SA 4.0 licence.