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Stellar HostProfile

HD 40956

Unclassified star • 116.6 pc

Records

5

literature rows

Planets

1

system count

References

6

distinct source labels

HIP: HIP 28951TIC: TIC 71099944HD: HD 40956

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: Jeong et al. 2018 • System source: TICv8

Temperature

4869 K

4869 to 5092

3 values • 3 distinct

Mass

2 Msun

single adopted value

1 values • 1 distinct

Radius

8.56 Rsun

8.56 to 8.81

3 values • 3 distinct

Age

1.35 Gyr

single adopted value

1 values • 1 distinct

Luminosity

1.66 log(Lsun)

1.61 to 1.66

2 values • 2 distinct

Distance

116.6 pc

single adopted value

5 values • 1 distinct

Planets

1

Stable across source rows

1

Scale Comparison

Radius against the Sun

Current adopted radius: 8.56 R☉ (circles scaled linearly by radius)

Sun

1.0 R☉ baseline

HD 40956

8.56 R☉

System Layout

Known planets

1 planets linked to this host

HD 40956 b

Radial Velocity

◌

Discovery

2017

Period

578.6 days

Radius

—

Mass

858.1 M⊕

Eq. Temp

—

HD 40956: A K-Type Star with a Massive Minimum-Mass Planet

HD 40956 is a K0 star located 380 light-years away. Its reported mass estimate is 2 solar masses, its radius is 8.56 solar radii, and its temperature is 4870 K, which is cooler than the Sun's. The star is 1.35 billion years old. One planet orbits this host.

HD 40956 b was discovered in 2017 by the radial velocity method, which measures the wobble a planet's gravity induces in its star's motion. Its minimum mass is 858 Earth masses, roughly 2.7 times Jupiter's mass and larger than Earth's. The planet completes an orbit every 579 days.

Provenance

Underlying measurements and references

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Evidence Summary

Rows

5

Stellar refs

5

System refs

1

Distancestable

5 values • 1 distinct

Parallaxstable

5 values • 1 distinct

Temperaturedisputed

3 values • 3 distinct

Massstable

1 values • 1 distinct

Radiusdisputed

3 values • 3 distinct

Agestable

1 values • 1 distinct

Luminositydisputed

2 values • 2 distinct

Surface Gravitystable

1 values • 1 distinct

Metallicitystable

1 values • 1 distinct

Spectral Typestable

2 values • 1 distinct

ST TEFFST MASSST RADST AGEST LUMST SPECTYPESY DISTStellar RefSystem Ref
—————K0116.6van Leeuwen et al. 2007TICv8
5092—8.81———116.6TICv8TICv8
—————K0116.6Cannon & Pickering 1918TICv8
4919.9—8.74—1.61—116.6Gaia DR2TICv8
486928.561.351.66—116.6Jeong et al. 2018TICv8