Astronomical data · SIMBAD
- Object type
- GiG
- Redshift
- z = 0.0020902958996515952
- Morphology
- SA(s)cd
- Coordinates
- RA 39.8204° · Dec 40.8723°
via SIMBAD · CDS Strasbourg
Key facts
- Constellation
- Perseus
- Right ascension
- 02 39 16.893
- Declination
- +40 ° 52 ′ 20.25 ″
- Heliocentric radial velocity
- 624 km/s
- Distance
- 30.94 ± 1.40 Mly (9.486 ± 0.429 Mpc )
- Group or cluster
- NGC 1023 group
- Type
- SAcd
- Mass
- 299 +28, −26 × 10 M ☉
- Mass light ratio
- 0.70 +0.16, −0.15 M ☉ / L ☉
- Size
- ~63,000 ly (19.32 kpc ) (estimated)
- Notable features
- Warped disk
via Wikipedia infobox
~2 min read
Encyclopedic overview
NGC 1003 is a spiral galaxy at the western edge of the Perseus constellation. It is located at a distance of about 36 million light years from the Milky Way and is receding with a heliocentric radial velocity of 624 km/s. This galaxy was discovered by the Anglo-German astronomer William Herschel on October 6, 1784, who described it as "pretty faint, large, extended 90°±, much brighter middle, mottled but not resolved". It is a member of the NGC 1023 group of galaxies.
The morphological class of NGC 1003 is SAcd, which means it is an unbarred spiral galaxy (SA) with somewhat loosely-wound spiral arms (cd). It is inclined by an angle of 70° to the line of sight from the Earth, with the major axis aligned along a position angle of 276°. The visual disk of the galaxy shows a substantial warping in the eastern side, turning it almost face on. The estimated star formation rate is 0.40 M☉·yr. It has a virial mass of 3×10 M☉ and a mass-to-light ratio of 0.7.
Excerpted from Wikipedia’s “Q1040837” article, available under the CC BY-SA 4.0 licence.