Key parameters at a glance
- A radius of 13.60 Earth radii
- A mass of 451.00 Earth masses
- Surface gravity around 2.44 g
- An orbital period of 345.720 days
- Semi-major axis 0.8900 AU
- Distance from Earth 168.30 light-years
- Earth Similarity Index 0.337
- Travel time at Voyager 1 speed 2,968,058 years
1 sibling around HIP 5158
HIP 5158 b shares its host star with 1 other confirmed planet. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| HIP 5158 b this | Gas Giant | 13.60 | 451.00 | 345.720 | — | 2009 |
| HIP 5158 c | Gas Giant | 12.20 | 4,780.16 | 9,017.760 | — | 2011 |
HIP 5158 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#609of 1771
top 34.3%
This planet
13.60R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | HIP 5158 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.60 | 11.21 |
| Mass (M⊕) | 1.00 | 451.00 | 317.83 |
| Density (g/cm³) | 5.51 | 0.99 | 1.33 |
| Surface Gravity (g) | 1.00 | 2.44 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Minimum mass (M sin i) | 451.000 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
HIP
HIP 5158
TIC
TIC 268634769
Gaia DR2
Gaia DR2 2351405057377686272
Gaia DR3
Gaia DR3 2351405057377686272
System
HIP 5158
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 345.72 Earth days (94.7% of a terrestrial year) on a highly eccentric trajectory at a mean orbital distance of 0.8900 AU.
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.337
0 = alien, 1 = Earth-identical
Discovery Paper
Primary reference
Lo Curto et al. 2010Instrument
HARPS Spectrograph
Publication
2010-03
Observation locale
Ground
Discovery cohort
Planets confirmed in 2009 at La Silla Observatory (12 shown).
Host System: HIP 5158
Spectral Class
K-type orange
Effective Temperature
4,962 K — cooler than the Sun (5,778 K)
Estimated Age
6.00 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.750 R☉
Stellar Mass
0.780 M☉
Metallicity [Fe/H]
0.10
Extended Stellar Properties
Surface gravity (log g)
4.370 dex
Stellar density
2.564 g/cm³
Systemic radial velocity
15.28 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
19.350 mas
Total Proper Motion
230.158 mas/yr
PM Right Ascension
203.90 mas/yr
PM Declination
-106.76 mas/yr
Galactic Cartesian (pc)
x = 0.886 · y = 0.263 · z = -0.382
Equatorial (J2000)
RA 16.50949° · Dec -22.45361°
Galactic ℓ, b
159.046° · -84.271°
Ecliptic λ, β
5.734° · -27.058°
HTM-20 index
-267005355
Similar Worlds
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HD 167042 b
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HD 83443 c
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