Galaxy NGC 7640

NGC 7640
NGC 7640: Galaxie in Andromeda; 500 mm Cassegrain 5800mm f11.4; SBIG STL11K; 90-10-10-10 min LRGB; Bernese Highlands; © 2005 Radek Chromik [32]

History

The galaxy NGC 7640 was discovered in 1784 with his home-made 18.7 inch f/12.8 reflecting telescope in Slough, England. On 17 October 1786 he cataloged it as II 600. [277, 464]

Physical Properties

Distance measurements of this SBc-type galaxy range from 8.4 Mpc to 11.9 Mpc. [145] There are indications, that the increased star formation is due to a recent interaction with a smaller galaxy. [431]

Revised+Historic NGC/IC Version 22/9, © 2022 Dr. Wolfgang Steinicke [277]
Designation NGC 7640
Type Gx (SBc)
Right Ascension (J2000.0) 23h 22m 06.6s
Declination (J2000.0) +40° 50' 42"
Diameter 10.5 × 1.8 arcmin
Photographic (blue) magnitude 11.9 mag
Visual magnitude 11.3 mag
Surface brightness 14.5 mag·arcmin-2
Position Angle 167°
Redshift (z) 0.001231
Distance derived from z 5.20 Mpc
Metric Distance 8.510 Mpc
Identification, Remarks WH II 600; h 2236; GC 4950; UGC 12554; MCG 7-48-2; CGCG 532-17; CGCG 533-1; IRAS 23197+4034

Finder Chart

The galaxy NGC 7640 is located in the constellation Andromeda. The best observation time is June to February, when it is highest at night.

Finder Chart Galaxy NGC 7640
Galaxy NGC 7640 in constellation Andromeda. Charts created using SkySafari 6 Pro and STScI Digitized Sky Survey. Limiting magnitudes: Constellation chart ~6.5 mag, DSS2 close-ups ~20 mag. [149, 160]

Objects Within a Radius of 15°

References