Temperature
4917 K
4867 to 4974.6
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Stellar HostProfile
HD 75784
K3 IV • 85.43 pc
Records
7
literature rows
Planets
2
system count
References
8
distinct source labels
HD: HD 75784HIP: HIP 43569TIC: TIC 46310554
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: Giguere et al. 2015 • System source: TICv8
Mass
1.41 Msun
1.26 to 1.41
Radius
3.30 Rsun
3.17 to 3.40
Age
4 Gyr
4 to 5.36
Luminosity
0.76 log(Lsun)
0.76 to 0.77
Distance
85.43 pc
single adopted value
Spectral Type
K3 IV
Multiple classifications reported
Planets
2
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 3.30 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HD 75784
3.30 R☉
System Layout
Known planets
2 planets linked to this host
HD 75784 b
Radial Velocity
◌
Discovery
2014
Period
341.2 days
Radius
—
Mass
317.8 M⊕
Eq. Temp
—
HD 75784 c
Radial Velocity
◌
Discovery
2018
Period
7900 days
Radius
—
Mass
1792.6 M⊕
Eq. Temp
—
HD 75784 and Its Two Known Planets
HD 75784 is a K3 IV star located 279 light-years away, with two planets known to orbit it. The star is estimated to have a mass of 1.41 solar masses and a radius of 3.3 solar radii, making both its reported mass and radius larger than the Sun's. Its temperature is 4920 K, which is cooler than the Sun's, and its age is 4 billion years.
Both planets were found using the radial velocity method, which measures the wobble a planet's gravity induces in its star's motion, with repeated wobbles revealing the planet and its orbital period.
HD 75784 b was discovered in 2014. Its minimum mass is 318 Earth masses, larger than Earth's and comparable to Jupiter's, and its orbital period is 341 days. Among the listed planets, it has the shortest year and the smallest minimum mass.
HD 75784 c was discovered in 2018. Its minimum mass is 1790 Earth masses, roughly 5.64 times Jupiter's mass and larger than Earth's, and its orbital period is 7900 days. Among the listed planets, it has the longest year and the largest minimum mass.
Provenance
Underlying measurements and references
Evidence Summary
Rows
7
Stellar refs
7
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agedisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
Spectral Typedisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| — | — | — | — | — | G5 | 85.43 | Cannon & Pickering 1918 | TICv8 |
| 4867 | 1.26 | 3.40 | — | — | — | 85.43 | Luhn et al. 2019 | TICv8 |
| 4917 | 1.33 | 3.17 | — | — | — | 85.43 | Stassun et al. 2017 | TICv8 |
| 4867 | — | 3.40 | — | — | — | 85.43 | TICv8 | TICv8 |
| 4867 | 1.26 | 3.40 | 5.36 | 0.77 | G5 | 85.43 | Ment et al. 2018 | TICv8 |
| 4974.6 | — | 3.22 | — | 0.76 | — | 85.43 | Gaia DR2 | TICv8 |
| 4917 | 1.41 | 3.30 | 4 | 0.76 | K3 IV | 85.43 | Giguere et al. 2015 | TICv8 |