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Stellar HostProfile

HD 42012

K0 • 36.80 pc

Records

4

literature rows

Planets

1

system count

References

5

distinct source labels

HD: HD 42012HIP: HIP 29242TIC: TIC 97724459

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: Rey et al. 2017 • System source: TICv8

Temperature

5405 K

5342.5 to 5405

3 values • 3 distinct

Mass

0.83 Msun

0.83 to 0.93

2 values • 2 distinct

Radius

0.82 Rsun

0.82 to 0.86

3 values • 3 distinct

Age

4.10 Gyr

single adopted value

1 values • 1 distinct

Distance

36.80 pc

single adopted value

4 values • 1 distinct

Spectral Type

K0

Consistent across records

K0 (2)

Planets

1

Stable across source rows

1

Scale Comparison

Radius against the Sun

Current adopted radius: 0.82 R☉ (circles scaled linearly by radius)

Sun

1.0 R☉ baseline

HD 42012

0.82 R☉

System Layout

Known planets

1 planets linked to this host

HD 42012 b

Radial Velocity

◌

Discovery

2017

Period

857.5 days

Radius

—

Mass

508.5 M⊕

Eq. Temp

—

HD 42012 and Its Planet

HD 42012 is a K0 star 120 light-years away. Its reported mass is 0.83 solar masses, its radius is 0.82 solar radii, and its temperature is 5410 K. The star is 4.1 billion years old. Both its mass and radius estimates are smaller than the Sun's, and its temperature is cooler than the Sun's. One planet is known to orbit this host.

That planet, HD 42012 b, was discovered in 2017 by the radial velocity method, which detects the wobble a planet's gravity induces in its star. Its minimum mass is 509 Earth masses, meaning its true mass is at least this value. This minimum mass is larger than Earth's and roughly 1.6 times Jupiter's mass. HD 42012 b completes one orbit in 858 days.

Provenance

Underlying measurements and references

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Evidence Summary

Rows

4

Stellar refs

4

System refs

1

Distancestable

4 values • 1 distinct

Parallaxstable

4 values • 1 distinct

Temperaturedisputed

3 values • 3 distinct

Massdisputed

2 values • 2 distinct

Radiusdisputed

3 values • 3 distinct

Agestable

1 values • 1 distinct

Luminositydisputed

2 values • 2 distinct

Surface Gravitydisputed

2 values • 2 distinct

Metallicitystable

1 values • 1 distinct

Spectral Typestable

2 values • 1 distinct

ST TEFFST MASSST RADST AGEST LUMST SPECTYPESY DISTStellar RefSystem Ref
53790.930.84—-0.27—36.80TICv8TICv8
5342.5—0.86—-0.27—36.80Gaia DR2TICv8
54050.830.824.10—K036.80Rey et al. 2017TICv8
—————K036.80Cannon & Pickering 1918TICv8