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Stellar HostProfile

HD 77946

Unclassified star • 99.45 pc

Records

4

literature rows

Planets

1

system count

References

5

distinct source labels

HD: HD 77946HIP: HIP 44746TIC: TIC 39699648

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: MacDougall et al. 2023 • System source: TICv8

Temperature

6007 K

6007 to 6046

4 values • 3 distinct

Mass

1.20 Msun

1.12 to 1.20

3 values • 3 distinct

Radius

1.32 Rsun

1.31 to 1.33

4 values • 3 distinct

Age

3.10 Gyr

3.10 to 3.85

2 values • 2 distinct

Luminosity

0.31 log(Lsun)

0.31 to 0.32

2 values • 2 distinct

Distance

99.45 pc

single adopted value

4 values • 1 distinct

Planets

1

Stable across source rows

1

Scale Comparison

Radius against the Sun

Current adopted radius: 1.32 R☉ (circles scaled linearly by radius)

Sun

1.0 R☉ baseline

HD 77946

1.32 R☉

System Layout

Known planets

1 planets linked to this host

HD 77946 b

Transit

◌

Discovery

2024

Period

6.53 days

Radius

2.90 R⊕

Mass

10.90 M⊕

Eq. Temp

1128.9 K

HD 77946 and Its Neptune-Like Planet

HD 77946 is an F5 star located 324 light-years away. It is 3.1 billion years old and has a mass of 1.2 solar masses, a radius of 1.32 solar radii, and a temperature of 6010 K. Each of these values is larger or hotter than the Sun's corresponding property.

One planet orbits this star. HD 77946 b was discovered by the transit method in 2024 and is classified as Neptune-like. It completes one orbit in 6.53 days, has a radius of 2.9 Earth radii, and a mass of 10.9 Earth masses. Both its radius and its mass are larger than Earth's, and its mean density is 2.47 g/cm³, 0.449 times Earth's.

Provenance

Underlying measurements and references

Download JSONDownload CSV

Evidence Summary

Rows

4

Stellar refs

4

System refs

1

Distancestable

4 values • 1 distinct

Parallaxstable

4 values • 1 distinct

Temperaturedisputed

4 values • 3 distinct

Massdisputed

3 values • 3 distinct

Radiusdisputed

4 values • 3 distinct

Agedisputed

2 values • 2 distinct

Luminositydisputed

2 values • 2 distinct

Surface Gravitydisputed

4 values • 3 distinct

Metallicitydisputed

2 values • 2 distinct

Spectral Typestable

1 values • 1 distinct

ST TEFFST MASSST RADST AGEST LUMST SPECTYPESY DISTStellar RefSystem Ref
60231.121.33—0.32—99.45TICv8TICv8
60071.201.323.100.31—99.45MacDougall et al. 2023TICv8
6023—1.33———99.45ExoFOPTICv8
60461.171.313.85—F599.45Palethorpe et al. 2024TICv8