Planet HD 190228 b

Detailed information about planet HD 190228 b and its parameters.

Planet

Name
HD 190228 b
Planet Status
Confirmed
Discovered in
2002
Update
2024-10-28
Mass
Mass*sin(i)
Semi-Major Axis
Orbital Period
Eccentricity
ω
Tperi
Radius
Inclination
Detection Method
Radial Velocity, Astrometry
Mass Meas. Method
Astrometry
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

May 2023: Xiao et al. (2023) confirm planetary nature for HD 190228 b obtaining a true mass estimate of 6.1 MJup, close enough to initial value of 5 MJup. Two possible values for orbital inclination are provided: 48-10+16° or 132-16+10°.
11 Jan 2011: Reffert & Quirrenbach (2011) calculate an astrometric mass range of 5.93-147.2 MJup at the 3 σ level. The errors on inclination are at the 3 σ level.
5 Oct 2010: The former mass estimate of 4.99 MJ is revised to 65.7 MJ, compatible with a massive brown dwarf (Sahlmann et al. 2010).
22 Nov. 2000: From astrometry Han et al. (2000) claim a preliminary mass of 45 MJ and inclination of 6.3°, compatible with a brown dwarf.

Star

Name
HD 190228
Distance
66.11 pc
Spectral type
G5IV
Apparent magnitude V
7.3
Mass
1.3 MSun
Age
Effective temperature
Radius
Metallicity [Fe/H]
-0.24
Detected Disc
Magnetic Field
RA2000
20:03:00.0
Dec2000
+28:18:24.0
Alternate Names

No remarks

No link