Lambda Geminorum
From Infogalactic: the planetary knowledge core
| Observation data Epoch J2000.0 Equinox J2000.0 |
|
|---|---|
| Constellation | Gemini |
| Right ascension | 07h 18m 05.57977s[1] |
| Declination | +16° 32′ 25.3905″[1] |
| Apparent magnitude (V) | 3.571[2] |
| Characteristics | |
| Spectral type | A3V[3] |
| U−B color index | +0.167[2] |
| B−V color index | +0.113[2] |
| Astrometry | |
| Radial velocity (Rv) | –7.40[4] km/s |
| Proper motion (μ) | RA: –44.43[1] mas/yr Dec.: –36.61[1] mas/yr |
| Parallax (π) | 32.33 ± 0.20[1] mas |
| Distance | 100.9 ± 0.6 ly (30.9 ± 0.2 pc) |
| Details | |
| Mass | 2.098[3] M☉ |
| Radius | 2.7773 ± 0.0469[3] R☉ |
| Luminosity | 27.3901 ± 0.3416[3] L☉ |
| Temperature | 7,932 ± 62[3] K |
| Rotational velocity (v sin i) | 154[5] km/s |
| Age | 0.8[3] Gyr |
| Other designations | |
Lambda Geminorum (λ Gem, λ Geminorum) is a class A3, fourth-magnitude star in the constellation Gemini. Lambda Geminorum is a variable star located about 95 light-years from Earth. It has 2.8 times the radius of the Sun and is radiating 27 times the Sun's luminosity. It has 2.1 times the mass of the Sun and is around 800 million years old.[3]
References
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