NGC 152
Open cluster in the constellation Tucana
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NGC 152 is an open cluster in the constellation Tucana. It was discovered by John Herschel on September 20, 1835.[5] It is located within the Small Magellanic Cloud.[1]
Rightascension00h 32m 56.26s[1]
Declination−73° 06′ 56.6″[1]
Apparent magnitude(V)12.26[1]
Apparent dimensions(V)3.00′ × 3.00′[2]
| NGC 152 | |
|---|---|
NGC 152 as seen from the Hubble Space Telescope | |
| Observation data (J2000 epoch) | |
| Right ascension | 00h 32m 56.26s[1] |
| Declination | −73° 06′ 56.6″[1] |
| Apparent magnitude (V) | 12.26[1] |
| Apparent dimensions (V) | 3.00′ × 3.00′[2] |
| Physical characteristics | |
| Mass | 2.5×104[3] M☉ |
| Estimated age | 1.40±0.20 Gyr[3] |
| Other designations | ESO 28-24[4] |
| Associations | |
| Constellation | Tucana |
NGC 152 is about 1.40 billion years old. Its estimated mass is 2.5×104 M☉, and its total luminosity is 8.0×104 L☉, leading to a mass-to-luminosity ratio of 0.31 M☉/L☉.[3] All else equal, older star clusters have a lower luminosity for the same mass; that is, their mass-to-luminosity ratios are higher.[3]
