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Eta
Its story
Eta Arae is an orange giant with 575 times the Sun's luminosity and a radius forty times greater, an aged star of five billion years anchored in the Altar's southern frame. It spins so slowly that a single rotation takes more than eleven Earth years. Its copper-colored light has been traveling for three centuries before reaching tonight's sky.
- Constellation
- Ara
- Apparent magnitude
- 3.77
- Distance
- 299.3 light years
- Coordinates (J2000)
- RA 252.446° · Dec -59.041°
- Catalogue
- HIP 82363 · HD 151249
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