Planet HD 89744 Ab

Detailed information about planet HD 89744 Ab and its parameters.

Planet

Name
HD 89744 Ab
Planet Status
Confirmed
Discovered in
2000
Update
2024-08-06
Mass
10.32 ( +2.43 -1.38 ) MJ
Mass*sin(i)
Semi-Major Axis
Orbital Period
Eccentricity
ω
Tperi
Radius
Inclination
Detection Method
Radial Velocity
Mass Meas. Method
Radial Velocity
Radius Meas. Method
Primary transit
Secondary transit
λ
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K
Calculated temperature
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names
Data Source Type Result Value Result Figure Notes Reference
Molecule Data Source Type Result Value Result Figure Notes Reference

19 Oct 2010: Simpson et al. (2010) infer the orbital inclination from the parent star rotation, deriving a planet mass 11+4-3MJ; but the coplanarity of stellar equator with planet orbits is generally not demonstrated.
19 Apr. 04: Astrometric confirmation of a wide low-mass companion (Mugrauer et al 2004)
22 Nov. 00: From astrometry Han et al (2000) claim a preliminary mass of 97 MJ and inclination of 175.8o

Star

An L-type brown dwarf companion (HD 89744 B, spT L0.5V, m = 0.076 MSol) lies 2,456 AUs away (Mugrauer et al. 2005). An additional low-mass companion (HD 89744 C, m = 0.08 MSol) is likely located at 219 AUs (Roberts et al. 2011, Scholz 2016, Fontanive et al. 2019).

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