Star
Name TW Hya
Distance 54.0 (± 5.0) pc
Spectral type K8V
Apparent magnitude V 11.1
Mass 0.7 (± 0.1) MSun A young massive planet in a star-disk system
Age 0.009 (± 0.001) Gyr A young massive planet in a star-disk system
Effective temperature 3600.0 K The 0.5-2.22 μm Scattered Light Spectrum of the Disk around TW Hya: Detection of a Partially Filled Disk Gap at 80 AU
Radius 1.08 RSun The 0.5-2.22 μm Scattered Light Spectrum of the Disk around TW Hya: Detection of a Partially Filled Disk Gap at 80 AU
Metallicity [Fe/H] —
Detected Disc Imaging
Magnetic Field —
RA2000 11:01:52.0
Dec2000 -34:42:17
Alternate Names —
Planetary system 2 planet
Planet TW Hya b
Name TW Hya b
Discovered in 2007
Mass 1.2 (± 0.4) MJ
Semi-major axis 0.041 (± 0.002) AU A young massive planet in a star-disk system
Orbital period 3.56 (± 0.02) day A young massive planet in a star-disk system
Eccentricity 0.04 (± 0.03) A young massive planet in a star-disk system
ω 105.0 (± 27.0) deg A young massive planet in a star-disk system
Tperi —
Radius —
Inclination 7.0 (± 1.0) deg A young massive planet in a star-disk system
Update Aug. 23, 2008
Detection Method Controversial