Stellar HostProfile

HD 133131 A

G2 V • 51.47 pc

Records

literature rows

Planets

system count

References

distinct source labels

HIP: HIP 73674 ATIC: TIC 440955228HD: HD 133131 A

Approximate color

from effective temperature

Stellar source: Teske et al. 2016 • System source: TICv8

Temperature

5799 K

5799 to 5893.3

3 values • 3 distinct

Mass

0.95 Msun

0.95 to 1.06

2 values • 2 distinct

Age

9.70 Gyr

single adopted value

1 values • 1 distinct

Distance

51.47 pc

single adopted value

4 values • 1 distinct

Spectral Type

G2 V

Consistent across records

G2 V (1)

Planets

Stable across source rows

Discovery

2016

Period

649 days

Radius

—

Mass

451.3 M⊕

Eq. Temp

—

Discovery

2016

Period

3568 days

Radius

—

Mass

133.5 M⊕

Eq. Temp

—

HD 133131 A and Its Two Known Planets

HD 133131 A is a G2 V star 168 light-years away, and its two known planets were both found in 2016 by the radial velocity method, which detects the wobble a planet's gravity induces in its star's motion. The star is a Sun-like dwarf with a reported mass of 0.95 solar masses, a temperature of 5800 K, and an age of 9.7 billion years. Its mass estimate is smaller than the Sun's, while its reported temperature is hotter.

HD 133131 A b has a minimum mass of 451 Earth masses and an orbital period of 649 days. That minimum mass is larger than Earth's and roughly 1.42 times Jupiter's mass, and among the listed planets it is both the shortest year and the largest minimum mass.

HD 133131 A c has a minimum mass of 133 Earth masses and an orbital period of 3570 days. Its minimum mass is also larger than Earth's, and among the listed planets it has the longest year and the smallest minimum mass.

Evidence Summary

Rows

Stellar refs

System refs

Distancestable

4 values • 1 distinct

Parallaxstable

4 values • 1 distinct

Temperaturedisputed

3 values • 3 distinct

Massdisputed

2 values • 2 distinct

Radiusdisputed

2 values • 2 distinct

Agestable

1 values • 1 distinct

Luminositydisputed

2 values • 2 distinct

Surface Gravitydisputed

2 values • 2 distinct

Metallicitystable

1 values • 1 distinct

Spectral Typestable

1 values • 1 distinct

ST TEFF	ST MASS	ST RAD	ST AGE	ST LUM	ST SPECTYPE	SY DIST	Stellar Ref	System Ref
5799	0.95	—	9.70	—	G2 V	51.47	Teske et al. 2016	TICv8
5849	1.06	0.96	—	-0.02	—	51.47	TICv8	TICv8
5893.3	—	0.94	—	-0.02	—	51.47	Gaia DR2	TICv8
—	—	—	—	—	—	51.47	Nordstrom et al. 2004	TICv8

HD 133131 A

Adopted host values from one source row

Known planets

HD 133131 A b

HD 133131 A c

HD 133131 A and Its Two Known Planets

Underlying measurements and references