Gliese 674
From Infogalactic: the planetary knowledge core
- Not to be confused with Gliese 676.
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Ara |
| Right ascension | 17h 28m 39.945s [1] |
| Declination | –46° 53′ 42.69″ [1] |
| Apparent magnitude (V) | 9.38 |
| Characteristics | |
| Spectral type | M3V |
| U−B color index | 1.22 |
| B−V color index | 1.55 |
| R−I color index | 1.03 |
| Astrometry | |
| Radial velocity (Rv) | -10.5 ± 1.3 km/s |
| Proper motion (μ) | RA: 571.26 ± 1.77[1] mas/yr Dec.: -880.83 ± 0.74[1] mas/yr |
| Parallax (π) | 220.24 ± 1.42[1] mas |
| Distance | 14.81 ± 0.10 ly (4.54 ± 0.03 pc) |
| Absolute magnitude (MV) | 11.06 |
| Details | |
| Mass | 0.35 M☉ |
| Radius | 0.41-0.43 R☉ |
| Luminosity | 0.016 L☉ |
| Surface gravity (log g) | 570 m/s2 (58.1 g) cgs |
| Temperature | 3600 ± 100 K |
| Metallicity | -0.28 |
| Age | 0.55 ± 0.45 G years |
| Other designations | |
| Database references | |
| SIMBAD | The star |
| b | |
| Exoplanet Archive | data |
| ARICNS | data |
| Extrasolar Planets Encyclopaedia |
data |
Gliese 674 (Gliese–Jahreiß 674) is a pre-main-sequence red dwarf approximately 15 light years away in the southern constellation of Ara.
Planetary system
On January 7, 2007, Bonfils used the HARPS spectrograph in ESO and found an intermediate mass planet orbiting close to the red dwarf star in an unusually eccentric orbit.[2]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥11.8 M⊕ | 0.039 | 4.6938 ± 0.007 | 0.2 ± 0.02 | — | — |
See also
References
External links
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- GJ 674 Catalog
- Image Gliese 674
Notes
Coordinates: 
17h 28m 39.9463s, −46° 53′ 42.685″
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