Temperature
5770 K
5770 to 5796.0
←Back to Stellar Hosts
Stellar HostProfile
HD 199509
G3V • 24.31 pc
Records
10
literature rows
Planets
1
system count
References
11
distinct source labels
TIC: TIC 401701660HD: HD 199509HIP: HIP 104436
Approximate color
from effective temperature
Canonical Summary
Adopted host values from one source row
Values come from the row with the most populated summary measurements. Missing values stay missing. Ranges and counts describe all source rows.
Stellar source: Turnbull 2015 • System source: TICv8
Mass
0.96 Msun
0.95 to 1.04
Radius
0.92 Rsun
0.90 to 0.92
Age
1.60 Gyr
single adopted value
Luminosity
-0.08 log(Lsun)
-0.08 to -0.08
Distance
24.31 pc
single adopted value
Spectral Type
G3V
Multiple classifications reported
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.92 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HD 199509
0.92 R☉
System Layout
Known planets
1 planets linked to this host
HD 199509 b
Radial Velocity
◌
Discovery
2022
Period
99.62 days
Radius
—
Mass
43.22 M⊕
Eq. Temp
—
HD 199509 b: A Giant Planet Around a Sun-Like Star
HD 199509 is a G3V star, a Sun-like dwarf, located 79.3 light-years away. It has a mass of 0.96 solar masses, making it smaller than the Sun, and a radius of 0.92 solar radii, also smaller than the Sun. The star is 1.6 billion years old and has a temperature of 5770 K. One planet orbits it.
That planet, HD 199509 b, was discovered in 2022 using the radial velocity method, which detects the gravitational wobble a planet induces in its star's motion. Repeated wobbles reveal the planet and its orbital period, which for HD 199509 b is 99.6 days. Its minimum mass is 43.2 Earth masses, a lower bound on its true mass that is larger than Earth's.
Provenance
Underlying measurements and references
Evidence Summary
Rows
10
Stellar refs
10
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agestable
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
Spectral Typedisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| — | — | — | — | — | G1 V | 24.31 | Gray et al. 2006 | TICv8 |
| — | — | — | — | — | G0 | 24.31 | Cannon & Pickering 1918 | TICv8 |
| — | — | — | — | — | — | 24.31 | Valenti & Fischer 2005 | TICv8 |
| 5770 | 0.96 | 0.92 | 1.60 | -0.08 | G3V | 24.31 | Turnbull 2015 | TICv8 |
| — | — | — | — | — | — | 24.31 | Nordstrom et al. 2004 | TICv8 |
| — | — | — | — | — | G3 V | 24.31 | Michigan Catalog, Vol. 1 | TICv8 |
| — | — | — | — | — | — | 24.31 | Henry et al. 1996 | TICv8 |
| — | 1.04 | — | — | — | — | 24.31 | Feng et al. 2022 | TICv8 |
| — | 0.95 | 0.92 | 1.60 | — | — | 24.31 | Takeda et al. 2007 | TICv8 |
| 5796.0 | 1.04 | 0.90 | — | -0.08 | — | 24.31 | TICv8 | TICv8 |