Lambda Aurigae
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| Observation data Equinox J2000 |
|
|---|---|
| Constellation | Auriga |
| Right ascension | 05h 19m 08.5s |
| Declination | +40° 05′ 57″ |
| Apparent magnitude (V) | 4.69 |
| Characteristics | |
| Spectral type | G1.5 IV-VFe-1 |
| U-B color index | 0.12 |
| B-V color index | 0.63 |
| Variable type | ? |
| Astrometry | |
| Radial velocity (Rv) | 66.4 km/s |
| Proper motion (μ) | RA: 519.33 mas/yr Dec.: -664.74 mas/yr |
| Parallax (π) | 79.08 ± 0.90 mas |
| Distance | 41.2 ± 0.5 ly (12.6 ± 0.1 pc) |
| Absolute magnitude (MV) | 4.18 |
| Other designations | |
Lambda Aurigae (λ Aur / λ Aurigae) is a binary star in the constellation Auriga. It is approximately 41.2 light-years from Earth.
The primary component, λ Aurigae A, is a yellow G-type subgiant with an apparent magnitude of +4.69. Its companion, λ Aurigae B, is 29 arcseconds away and has an apparent magnitude of +13.4. The binary star also has two optical companions, the 12th magnitude λ Aurigae C at 42 arcseconds and the magnitude +8.6 λ Aurigae D, 146 arcseconds from the primary.
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