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Stellar HostProfile

HD 209458

G0 V • 48.30 pc

Records

32

literature rows

Planets

1

system count

References

33

distinct source labels

TIC: TIC 420814525HIP: HIP 108859HD: HD 209458

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: del Burgo & Allende Prieto 2016 • System source: TICv8

Temperature

6071 K

5998 to 6120

18 values • 14 distinct

Mass

1.26 Msun

1 to 1.26

19 values • 16 distinct

Radius

1.20 Rsun

0.99 to 1.20

18 values • 15 distinct

Age

3.50 Gyr

2.30 to 15

9 values • 8 distinct

Luminosity

0.25 log(Lsun)

0.19 to 0.25

8 values • 8 distinct

Distance

48.30 pc

single adopted value

32 values • 1 distinct

Spectral Type

G0 V

Multiple classifications reported

G0 V (2), F8 (1)

Planets

1

Stable across source rows

1

Scale Comparison

Radius against the Sun

Current adopted radius: 1.20 R☉ (circles scaled linearly by radius)

Sun

1.0 R☉ baseline

HD 209458

1.20 R☉

System Layout

Known planets

1 planets linked to this host

HD 209458 b

Radial Velocity

◌

Discovery

1999

Period

3.52 days

Radius

15.58 R⊕

Mass

232.0 M⊕

Eq. Temp

—

HD 209458 and Its Giant Planet

HD 209458 is a G-type main-sequence dwarf 158 light-years away, and one planet has been found orbiting it. The star is 3.5 billion years old, with a mass of 1.26 solar masses, a radius of 1.2 solar radii, and a temperature of 6070 K. Its mass and radius are larger than the Sun's, and it is hotter than the Sun.

The planet, HD 209458 b, is Jupiter-like. It was discovered in 1999 by the radial velocity method, which detects the wobble a planet's gravity induces in its star, and its orbital period is 3.52 days. It has a mass of 232 Earth masses and a radius of 15.6 Earth radii. Both values are larger than Earth's, and its mean density is 0.338 g/cm³, 0.0613 times Earth's.

Provenance

Underlying measurements and references

Download JSONDownload CSV

Evidence Summary

Rows

32

Stellar refs

32

System refs

1

Distancestable

32 values • 1 distinct

Parallaxstable

32 values • 1 distinct

Temperaturedisputed

18 values • 14 distinct

Massdisputed

19 values • 16 distinct

Radiusdisputed

18 values • 15 distinct

Agedisputed

9 values • 8 distinct

Luminositydisputed

8 values • 8 distinct

Surface Gravitydisputed

14 values • 12 distinct

Metallicitydisputed

13 values • 8 distinct

Spectral Typedisputed

3 values • 2 distinct

ST TEFFST MASSST RADST AGEST LUMST SPECTYPESY DISTStellar RefSystem Ref
6076.6—1.18—0.23—48.30Gaia DR2TICv8
60651.121.163.100.21—48.30Torres et al. 2008TICv8
61171.15————48.30Santos et al. 2004TICv8
—1.101.12———48.30Knutson et al. 2007TICv8
60251.031.15———48.30Henry et al. 2000TICv8
——————48.30Laughlin et al. 2005TICv8
60711.261.203.500.25G0 V48.30del Burgo & Allende Prieto 2016TICv8
609211.20—0.25—48.30Boyajian et al. 2015TICv8
6026.41.071.20———48.30Rosenthal et al. 2021TICv8
60001.101.10———48.30Charbonneau et al. 2000TICv8
61171.151.162.30——48.30Southworth 2010TICv8
59981.061.185.200.21—48.30Cody & Sasselov 2002TICv8
——1.15———48.30Brown et al. 2001TICv8
60761.101.1830.23—48.30Ghezzi et al. 2010TICv8
61181.070.99———48.30Mortier et al. 2013TICv8
——————48.30Nordstrom et al. 2004TICv8
——————48.30Valenti & Fischer 2005TICv8
——————48.30Naef et al. 2004TICv8
——————48.30Wright et al. 2004TICv8
——————48.30Nidever et al. 2002TICv8
60911.231.19———48.30Stassun et al. 2017TICv8
—1.131.142.44——48.30Takeda et al. 2007TICv8
60521.131.19—0.23—48.30TICv8TICv8
——————48.30Albrecht et al. 2012TICv8
60651.121.163.10——48.30Bonomo et al. 2017TICv8
—————F848.30Cannon & Pickering 1918TICv8
61201.15————48.30Santos et al. 2003TICv8
6052—1.19———48.30ExoFOPTICv8
———15——48.30Sanz-Forcada et al. 2010TICv8
—————G0 V48.30Salz et al. 2015TICv8
61181.15——0.19—48.30Sousa et al. 2008TICv8
—1.14—2.39——48.30Maxted et al. 2015TICv8