NGC 330
Sign in to saveyoung open cluster in the Small Magellanic Cloud
In the Vinony graph
Within Vinony's link graph, NGC 330 is referenced by 810 other articles, and connects out to list of NGC objects (1–1000), Tucana and epoch.
It sits within the topics Astronomical objects discovered in 1826, Discoveries by James Dunlop and NGC objects.
Its subject is documented across 34 Wikipedia language editions.
Key facts
- Right ascension
- 00 56 17.6
- Declination
- −72 ° 27 ′ 47 ″
- Apparent dimensions v
- 2.8′ × 2.5′
- Mass
- 5.4 × 10 M ☉
- Estimated age
- 0.09 ± 0.05 Gyr
- Other designations
- ESO 029-SC 024.
- Constellation
- Tucana
via Wikipedia infobox
Wikidata facts
- Instance of
- open cluster
- Part of
- Small Magellanic Cloud
- Constellation
- Tucana
- Image
- NGC330 - HST - Potw2126a.jpg
Show 8 more facts
- catalog code
- ESO 29-24
- Commons category
- NGC 330
- discoverer or inventor
- James Dunlop
- time of discovery or invention
- 1826-08-01
- apparent magnitude
- 8.89
- right ascension
- 14.085792
- declination
- -72.453472
- epoch
- J2000.0
via Wikidata · CC0
~1 min read
Encyclopedic overview
NGC 330 is an open cluster in the Small Magellanic Cloud. It is located in the constellation Tucana. It was discovered on 1 August 1826 by James Dunlop. It was described by Dreyer as "a globular cluster, very bright, small, a little extended, stars from 13th to 15th magnitude." At an aperture of 31.0 arcseconds, the apparent V-band magnitude is 9.60, but at this wavelength, it also has 0.36 magnitudes of interstellar extinction.
NGC 330 is quite young, at about 40 million years old, and has a large proportion of Be stars. Its estimated mass is 5.4×10 M☉, and its total luminosity is 8.93×10 L☉, leading to a mass-to-luminosity ratio of 0.06 M☉/L☉. All else equal, older star clusters have higher mass-to-luminosity ratios; that is, they have lower luminosities for the same mass. About 34% of the massive star population in NGC 330 is estimated to be in a close binary star system; this is lower than clusters in the Large Magellanic Cloud and the Milky Way, but it is unknown if this is because NGC 330 is metal-poor or is older than the compared clusters.
Excerpted from Wikipedia’s “NGC 330” article, available under the CC BY-SA 4.0 licence.