Stellar HostProfile

HD 203030

Unclassified star • 39.25 pc

Records

literature rows

Planets

system count

References

distinct source labels

HD: HD 203030TIC: TIC 25559430HIP: HIP 105232

Approximate color

from effective temperature

Stellar source: TICv8 • System source: TICv8

Temperature

5418.3 K

5418.3 to 5603

3 values • 3 distinct

Mass

0.94 Msun

single adopted value

1 values • 1 distinct

Radius

0.88 Rsun

0.86 to 0.88

2 values • 2 distinct

Luminosity

-0.23 log(Lsun)

-0.23 to -0.23

2 values • 2 distinct

Distance

39.25 pc

single adopted value

8 values • 1 distinct

Planets

Stable across source rows

Sun

1.0 R☉ baseline

HD 203030

0.88 R☉

Discovery

2006

Period

—

Radius

14.46 R⊕

Mass

3496.1 M⊕

Eq. Temp

1040 K

HD 203030 and Its Jupiter-Like Planet

HD 203030 is a G8 V star 128 light-years from Earth. Its spectral type marks it as a main-sequence G-type dwarf, making it broadly Sun-like in class. The star has a mass of 0.94 solar masses, a radius of 0.875 solar radii, and a temperature of 5420 K; its radius is smaller than the Sun's, and its temperature is cooler. One planet orbits this host.

That planet, HD 203030 b, was discovered by imaging in 2006. It is Jupiter-like, a size class that exceeds four times Earth's radius. Its mass of 3500 Earth masses is larger than Earth's and roughly 11 times Jupiter's mass, while its radius estimate of 14.5 Earth radii is larger than Earth's. Its mean density is 6.37 g/cm³, 1.16 times Earth's. No orbital period is reported for HD 203030 b.

Evidence Summary

Rows

Stellar refs

System refs

Distancestable

8 values • 1 distinct

Parallaxstable

8 values • 1 distinct

Temperaturedisputed

3 values • 3 distinct

Massstable

1 values • 1 distinct

Radiusdisputed

2 values • 2 distinct

Agedisputed

2 values • 2 distinct

Luminositydisputed

2 values • 2 distinct

Surface Gravitydisputed

2 values • 2 distinct

Metallicitystable

1 values • 1 distinct

Spectral Typedisputed

3 values • 2 distinct

ST TEFF	ST MASS	ST RAD	ST AGE	ST LUM	ST SPECTYPE	SY DIST	Stellar Ref	System Ref
5472.3	—	0.86	—	-0.23	—	39.25	Gaia DR2	TICv8
5603	—	—	—	—	—	39.25	Swastik et al. 2021	TICv8
—	—	—	0.10	—	G8 V	39.25	Miles-Páez et al. 2017	TICv8
5418.3	0.94	0.88	—	-0.23	—	39.25	TICv8	TICv8
—	—	—	—	—	G5	39.25	Cannon & Pickering 1918	TICv8
—	—	—	—	—	—	39.25	Nordstrom et al. 2004	TICv8
—	—	—	—	—	—	39.25	Wright et al. 2004	TICv8
—	—	—	0.22	—	G8 V	39.25	Metchev & Hillenbrand 2006	TICv8

HD 203030

Adopted host values from one source row

Radius against the Sun

Known planets

HD 203030 b

HD 203030 and Its Jupiter-Like Planet

Underlying measurements and references