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Stellar HostProfile

HD 81817

K2 • 269.1 pc

Records

5

literature rows

Planets

2

system count

References

6

distinct source labels

HIP: HIP 47193TIC: TIC 137603530HD: HD 81817

Approximate color

from effective temperature

Canonical Summary

Adopted host values from all rows

Numeric fields use the median of non-null measurements. Disagreement stays visible through ranges, counts, and provenance.

Temperature

4140 K

4043.3 to 4245

3 values • 3 distinct

Mass

4.30 Msun

single adopted value

2 values • 1 distinct

Radius

91.40 Rsun

83.80 to 109.5

3 values • 3 distinct

Age

0.15 Gyr

single adopted value

1 values • 1 distinct

Luminosity

3.36 log(Lsun)

3.26 to 3.46

2 values • 2 distinct

Distance

269.1 pc

single adopted value

5 values • 1 distinct

Spectral Type

K2

Multiple classifications reported

K2 (1), K3 III (1)

Planets

2

Stable across source rows

2

System Layout

Known planets

2 planets linked to this host

HD 81817 b

Radial Velocity

Discovery

2020

Period

1021.2 days

Radius

Mass

7668.6 M⊕

Eq. Temp

HD 81817 c

Radial Velocity

Discovery

2022

Period

623.0 days

Radius

Mass

7185.8 M⊕

Eq. Temp

Provenance

Underlying measurements and references

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

2 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 Typedisputed

2 values • 2 distinct

ST TEFFST MASSST RADST AGEST LUMST SPECTYPESY DISTStellar RefSystem Ref
41404.3083.800.153.26K3 III269.1Bang et al. 2020TICv8
4.30269.1Feng et al. 2022TICv8
424591.40269.1TICv8TICv8
4043.3109.53.46269.1Gaia DR2TICv8
K2269.1Cannon & Pickering 1918TICv8