Temperature
6354 K
6201 to 6354
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Stellar HostProfile
HR 858
Unclassified star • 31.96 pc
Records
11
literature rows
Planets
3
system count
References
10
distinct source labels
TIC: TIC 178155732HD: HD 17926HIP: HIP 13363
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: Bonfanti et al. 2025 • System source: TICv8
Mass
1.20 Msun
1.15 to 1.24
Radius
1.26 Rsun
1.26 to 1.31
Age
2 Gyr
single adopted value
Luminosity
0.36 log(Lsun)
0.36 to 0.37
Distance
31.96 pc
single adopted value
Planets
3
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.26 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HR 858
1.26 R☉
System Layout
Known planets
3 planets linked to this host
HR 858: A Nearby Star With Three Super-Earths
HR 858 is a star 104 light-years away with three known planets, all classed as Super-Earths. Its spectral type is F6 V, making it a main-sequence star somewhat hotter and more massive than the Sun. The star's reported mass estimate is 1.2 solar masses, larger than the Sun's, and its reported radius estimate is 1.26 solar radii, also larger than the Sun's. Its reported temperature of 6350 K is hotter than the Sun's, and its age is 2 billion years.
All three planets were discovered in 2019 by the transit method. HR 858 b has a radius of 2 Earth radii, larger than Earth's, and a mass estimate of 3.55 Earth masses, larger than Earth's. Its mean density is 2.43 g/cm³, 0.441 times Earth's. It completes an orbit in 3.59 days, the shortest year among the listed planets.
HR 858 c has a radius of 1.98 Earth radii, larger than Earth's, and the smallest radius among the listed planets by reported estimates. Its mass is reported as an upper limit of 3.8 Earth masses. Its orbital period is 5.97 days, the second-shortest year among the listed planets.
HR 858 d has a radius of 2 Earth radii, larger than Earth's, and a mass estimate of 7.1 Earth masses, larger than Earth's. Its mean density is 4.88 g/cm³, 0.886 times Earth's. It orbits in 11.2 days, the longest year among the listed planets.
Provenance
Underlying measurements and references
Evidence Summary
Rows
11
Stellar refs
9
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agestable
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
Spectral Typedisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 6354 | 1.20 | 1.26 | 2 | 0.36 | — | 31.96 | Bonfanti et al. 2025 | TICv8 |
| — | — | — | — | — | F6 V | 31.96 | Michigan Catalog, Vol. 3 | TICv8 |
| 6308.3 | — | 1.28 | — | — | — | 31.96 | ExoFOP | TICv8 |
| — | — | — | — | — | F5 | 31.96 | Cannon & Pickering 1918 | TICv8 |
| 6308.3 | — | 1.28 | — | — | — | 31.96 | ExoFOP | TICv8 |
| 6288 | — | 1.30 | — | 0.37 | — | 31.96 | Gaia DR2 | TICv8 |
| — | — | — | — | — | F6 V | 31.96 | Gray et al. 2006 | TICv8 |
| 6308.3 | — | 1.28 | — | — | — | 31.96 | ExoFOP | TICv8 |
| — | — | — | — | — | — | 31.96 | Nordstrom et al. 2004 | TICv8 |
| 6308.3 | 1.24 | 1.28 | — | 0.37 | — | 31.96 | TICv8 | TICv8 |
| 6201 | 1.15 | 1.31 | — | 0.37 | — | 31.96 | Vanderburg et al. 2019 | TICv8 |