HD 149026

Database links to HD 149026

Stern HD 149026 (Ogma)
Position of HD 149026; the star shown in yellow is η Herculis
Overview (approximate location)
AladinLite
Observation dates equinox :  J2000.0 , epoch : J2000.0
Constellation	Hercules
Right ascension	16 h 30 m 29.62 s
declination	+ 38 ° 20 ′ 50.3 ″
Apparent brightness	8.15 likes
Typing
Known exoplanets	1
B − V color index	+0.61
Spectral class	G0 IV
Astrometry
Radial velocity	(−17.84 ± 0.18) km / s
parallax	(13.15 ± 0.03)  mas
distance	(247.9 ± 0.6)  ly (76.0 ± 0.2)  pc
Visual absolute brightness M vis	+3.7 mag
Proper movement
Rec. Share:	(−77.90 ± 0.05)  mas / a
Dec. portion:	(+52.56 ± 0.06)  mas / a
Physical Properties
Dimensions	(1.3 ± 0.1)  M ☉
radius	(1.50 ± 0.07)  R ☉
Luminosity	2.8  L ☉
Effective temperature	(6150 ± 50)  K.
Metallicity [Fe / H]	+0.36 ± 0.05
Age	(2 ± 0.8) bill.  A
Other names and catalog entries
Bonn survey BD + 38 ° 2787 Henry Draper Catalog HD 149026 [1] Hipparcos catalog HIP 80838 [2] SAO catalog SAO 65349 [3] Tycho catalog TYC 3063-1587-1 [4] Other names Grandma
annotation
↑ Estimated from apparent brightness and distance.

HD 149026 ( Ogma ) is a sub-giant of the spectral class G0 in the constellation Hercules, around 250  light years from Earth . It has an apparent magnitude of 8.15 mag. The star is orbited by an exoplanet called HD 149026 b ( Smertrios ) (Sato et al., 2005).

Individual evidence

1. ↑ ^{a b c d e f} HD 149026. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed on January 13, 2019 . 
2. ^ Hipparcos catalog (ESA 1997)
3. ↑ ^{a b c d e} HD 149026. In: Extrasolar Planets Encyclopaedia . Retrieved January 13, 2019 .