674

Database links to Gliese 674

Star gliese 674
AladinLite
Observation dates equinox :  J2000.0 , epoch : J2000.0
Constellation	altar
Right ascension	17 h 28 m 39.95 s
declination	-46 ° 53 ′ 42.7 ″
Apparent brightness	9.38 likes
Typing
Known exoplanets	1
B − V color index	+1.57
U − B color index	+1.20
R − I index	+1.33
Spectral class	M3 V
Variable star type	BY
Astrometry
parallax	(219.80 ± 0.05)  mas
distance	(14.83 ± 0.01)  Lj (4.550 ± 0.001)  pc
Visual absolute brightness M vis	+11.09 mag
Proper movement
Rec. Share:	(+572.58 ± 0.10)  mas / a
Dec. portion:	(−880.25 ± 0.07)  mas / a
Physical Properties
Dimensions	(0.360 ± 0.007)  M ☉
radius	(0.365 ± 0.011)  R ☉
Luminosity	0.016  L ☉
Effective temperature	3600 ±  100K
Metallicity [Fe / H]	−0.28
Age	550 ± 450 mill.  A
Other names and catalog entries
Cordoba Survey CD −46 ° 11540 Gliese catalog FY 674 [1] Hipparcos catalog HIP 85523 [2] Tycho catalog TYC 8346-37-1 [3] 2MASS catalog 2MASS J17283991-4653424 [4] Other names LHS 449 • LFT 1351
annotation
↑ estimated from apparent brightness and distance

Gliese 674 is a red dwarf in the constellation Altar, 14.8 light years from Earth . It has an apparent magnitude of 9.38 mag. In 2007, Xavier Bonfils discovered an exoplanet orbiting this star. This is called Gliese 674 b .

Individual evidence

1. ↑ ^{a b c d e f g} CD-46 11540. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed on November 10, 2018 . 
2. ^ Hipparcos catalog (ESA 1997)
3. ↑ NSI 22,079th In: VSX. AAVSO , accessed November 10, 2018 . 
4. ↑ ^{a b} P. E. Kervella, F. Arenou, F. Mignard, F. Thévenin: Stellar and substellar companions of nearby stars from Gaia DR2. Binarity from proper motion anomaly . In: Astronomy & Astrophysics . 623, p. A72. arxiv : 1811.08902 . bibcode : 2019A & A ... 623A..72K . doi : 10.1051 / 0004-6361 / 201834371 .
5. ^ GJ 674. In: NASA Exoplanet Archive . Retrieved November 10, 2018 . 
6. ↑ ^{a b c} GJ 674b. In: Extrasolar Planets Encyclopaedia . Retrieved November 10, 2018 .