Astronomical data · SIMBAD
- Object type
- GiG
- Redshift
- z = 0.008682337172173593
- Coordinates
- RA 190.2301° · Dec -40.9764°
via SIMBAD · CDS Strasbourg
Key facts
- Constellation
- Centaurus
- Right ascension
- 12 40 55.195
- Declination
- –40 ° 58 ′ 35.05 ″
- Heliocentric radial velocity
- + 2561 km/s
- Distance
- 106.8 Mly (32.71 Mpc )
- Type
- SA(s)c
- Size
- 100,000 ly (diameter)
- Apparent size v
- 3′.4 × 2′.5
via Wikipedia infobox
Wikidata facts
- Instance of
- spiral galaxy
- Constellation
- Centaurus
- Distance from Earth
- 32.71
- Image
- NGC 4603.jpg
Show 11 more facts
- catalog code
- Gaia DR2 6146196851680414208
- galaxy morphological type
- Sc
- Commons category
- NGC 4603
- discoverer or inventor
- John Frederick William Herschel
- time of discovery or invention
- 1834-06-08
- apparent magnitude
- 8.366
- redshift
- 0.008546
- right ascension
- 190.23009387382810
- declination
- -40.97640776257400
- radial velocity
- 2562
- epoch
- J2000.0
Sources (1)
via Wikidata · CC0
~1 min read
Encyclopedic overview
NGC 4603 is a spiral galaxy located about 107 million light years away in the constellation Centaurus. It is a member of the Centaurus Cluster of galaxies, belonging to the section designated "Cen30". The morphological classification is SA(s)c, which indicates it is a pure spiral galaxy with relatively loosely wound arms.
During 1999, this galaxy was the subject of an extended study using the Hubble Space Telescope to locate Cepheid variable stars. A total of 43±7 were found, and the measurement of their periodicity gave a net distance estimate of 108.7+5.5 −4.9 Mly (33.3+1.7 −1.5 Mpc). This is consistent with the distance estimate determined through redshift measurements. As of the time of this study, NGC 4603 was the most distant galaxy for which a distance estimate had been made using Cepheid variable.
Excerpted from Wikipedia’s “Q1112804” article, available under the CC BY-SA 4.0 licence.