Stellar HostProfile

HD 168009

G2V • 23.30 pc

Records

literature rows

Planets

system count

References

distinct source labels

TIC: TIC 416117806HD: HD 168009HIP: HIP 89474

Approximate color

from effective temperature

Stellar source: Turnbull 2015 • System source: TICv8

Temperature

5767 K

5767 to 5808

3 values • 3 distinct

Mass

0.98 Msun

0.98 to 1.04

4 values • 3 distinct

Radius

1.17 Rsun

1.17 to 1.21

4 values • 3 distinct

Age

9.68 Gyr

single adopted value

2 values • 1 distinct

Luminosity

0.15 log(Lsun)

0.15 to 0.15

2 values • 2 distinct

Distance

23.30 pc

single adopted value

11 values • 1 distinct

Spectral Type

G2V

Multiple classifications reported

G0 (1), G1 V (1), G2V (1)

Planets

Stable across source rows

Sun

1.0 R☉ baseline

HD 168009

1.17 R☉

Discovery

2021

Period

15.15 days

Radius

—

Mass

9.53 M⊕

Eq. Temp

—

HD 168009 and Its Planet

HD 168009 is a G2V star, a Sun-like main-sequence dwarf, located 76 light-years away. The star's reported mass estimate is smaller than the Sun's, at 0.98 solar masses, while its reported radius estimate is larger than the Sun's, at 1.17 solar radii. Its temperature is 5770 K, and its age is 9.68 billion years. One planet is known to orbit this host.

That planet, HD 168009 b, was discovered in 2021 by the radial velocity method, which measures the wobble a planet's gravity induces in its star's motion; repeated wobbles reveal the planet and its orbital period. HD 168009 b has a minimum mass of 9.53 Earth masses, a lower bound on its true mass, and that minimum mass is larger than Earth's. The planet completes one orbit every 15.1 days.

The star's reported radius estimate is larger than the Sun's, and its reported mass estimate is smaller than the Sun's.

Evidence Summary

Rows

Stellar refs

System refs

Distancestable

11 values • 1 distinct

Parallaxstable

11 values • 1 distinct

Temperaturedisputed

3 values • 3 distinct

Massdisputed

4 values • 3 distinct

Radiusdisputed

4 values • 3 distinct

Agestable

2 values • 1 distinct

Luminositydisputed

2 values • 2 distinct

Surface Gravitydisputed

4 values • 3 distinct

Metallicitydisputed

3 values • 3 distinct

Spectral Typedisputed

3 values • 3 distinct

ST TEFF	ST MASS	ST RAD	ST AGE	ST LUM	ST SPECTYPE	SY DIST	Stellar Ref	System Ref
5767	0.98	1.17	9.68	0.15	G2V	23.30	Turnbull 2015	TICv8
—	—	—	—	—	—	23.30	Valenti & Fischer 2005	TICv8
—	0.98	1.17	9.68	—	—	23.30	Takeda et al. 2007	TICv8
—	—	—	—	—	—	23.30	Nordstrom et al. 2004	TICv8
—	—	—	—	—	—	23.30	Wright et al. 2004	TICv8
—	—	—	—	—	—	23.30	Duncan et al. 1991	TICv8
5778.3	0.99	1.21	—	—	—	23.30	Rosenthal et al. 2021	TICv8
5808	1.04	1.17	—	0.15	—	23.30	TICv8	TICv8
—	—	—	—	—	G0	23.30	Cannon & Pickering 1918	TICv8
—	—	—	—	—	—	23.30	Nidever et al. 2002	TICv8
—	—	—	—	—	G1 V	23.30	Gray et al. 2003	TICv8

HD 168009

Adopted host values from one source row

Radius against the Sun

Known planets

HD 168009 b

HD 168009 and Its Planet

Underlying measurements and references