Eta Capricorni
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| Observation data Epoch J2000.0 |
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|---|---|
| Constellation | Capricornus |
| Right ascension | 21h04m24.3s |
| Declination | −19°51′18″ |
| Apparent magnitude (V) | +4.82 |
| Distance | 158 ± 11 ly (48 ± 3 pc) |
| Spectral type | A5V |
| Other designations | |
Eta Capricorni (η Cap / η Capricorni) is a binary star in the constellation Capricornus. It also has the traditional star name Arm. It is approximately 158 light years from Earth.
The primary component, η Capricorni A, is a white A-type main sequence dwarf with an apparent magnitude of +4.82. Its companion, η Capricorni B, has an apparent magnitude of +6.5 and is located 0.34 arcseconds from the primary.
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