Gliese 674

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Not to be confused with Gliese 676.
Gliese 674
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 gcgs
Temperature 3600 ± 100 K
Metallicity -0.28
Age 0.55 ± 0.45 G years
Other designations
GJ 674, CD -46°11540, GCTP 3958.00, LHS 449, LFT 1351, LTT 6942, LPM 645, HIP 85523.
Database references
SIMBAD data
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[edit]

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]

The Gliese 674 planetary system
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[edit]

External links[edit]

References[edit]

Coordinates: Sky map 17h 28m 39.9463s, −46° 53′ 42.685″