NGC 2573
Sign in to saveAlso known as Polarissima Australis
barred spiral galaxy in the constellation Octans
Key facts
- Constellation
- Octans
- Right ascension
- 01 41 38.0019
- Declination
- −89 ° 20 ′ 04.2723 ″
- Redshift
- 0.008102 ± 0.000017
- Heliocentric radial velocity
- 2,429 ± 5 km/s
- Distance
- 25.8 megaparsecs (84 Mly)
- Apparent magnitude v
- 13.25 ± 0.09
- Apparent magnitude b
- 14.15 ± 0.09
- Absolute magnitude v
- −19.30 ± 0.67
- Type
- SAB(s)cd:
- Mass
- 3.229 × 10 M ☉
- Size
- 23,860 parsecs (77,800 ly)
- Apparent size v
- 0.85′ × 0.34′
- Notable features
- Closest NGC object to the south celestial pole .
via Wikipedia infobox
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Encyclopedic overview
NGC 2573, also known as Polarissima Australis, is a barred spiral galaxy located in the constellation Octans. It has an apparent magnitude of 13.25, making it readily visible in medium-sized telescopes, but not to the naked eye. The object is located relatively far at a distance of 84 million light years and it is currently receding with a heliocentric radial velocity of 2495 km/s. Using a redshift of z = 0.08102 yields a greater distance of 109 million light years.
The galaxy was discovered on March 29th, 1837 by English astronomer John Herschel. It is the closest NGC object to the south celestial pole, hence the nickname "Polarissima Australis".
Excerpted from Wikipedia’s “NGC 2573” article, available under the CC BY-SA 4.0 licence.
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