Lambda Tucanae
The Bayer designation Lambda Tucanae (λ Tuc, λ Tucanae) is shared by two star systems, λ¹ Tucanae and λ² Tucanae, in the constellation Tucana. They are separated by 0.23° in the sky.
λ¹ Tucanae
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Tucana |
| Right ascension | 00h 52m 24.3s |
| Declination | −69° 30' 16" |
| Apparent magnitude (V) | +6.67 |
| Distance | 200 ± 19 ly (61 ± 6 pc) |
| Spectral type | F7IV-V |
| Other designations | |
Lambda-1 Tucanae is a binary star approximately 206 light years from Earth. The primary component, Lambda-1 Tucanae A, is a yellow-white F-type subgiant with an apparent magnitude of +6.22. It has an 8th magnitude companion, Lambda-1 Tucanae B, which is 20 arcseconds from the primary.
λ² Tucanae
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Tucana |
| Right ascension | 00h 55m 00.3s |
| Declination | −69° 31' 37" |
| Apparent magnitude (V) | +5.45 |
| Distance | 210 ± 7 ly (64 ± 2 pc) |
| Spectral type | K2III |
| Other designations | |
Lambda-2 Tucanae is an orange K-type giant with an apparent magnitude of +5.46. It is approximately 220 light years from Earth.[1]
References
- ↑ "Lambda 2 Tucanae - Red Giant Branch Star". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 20 October 2013.
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