Key parameters at a glance
- A radius of 14.30 Earth radii
- A mass of 136.03 Earth masses
- Surface gravity around 0.67 g
- An orbital period of 28.125 days
- Semi-major axis 0.1770 AU
- Distance from Earth 201.50 light-years
- Earth Similarity Index 0.242
- Travel time at Voyager 1 speed 3,553,461 years
- Almost certainly tidally locked to its host star given the close orbit
1 sibling around HIP 65407
HIP 65407 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 65407 b this | Gas Giant | 14.30 | 136.03 | 28.125 | — | 2016 |
| HIP 65407 c | Gas Giant | 13.90 | 249.18 | 67.300 | — | 2016 |
HIP 65407 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#301of 1771
top 16.9%
This planet
14.30R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | HIP 65407 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 14.30 | 11.21 |
| Mass (M⊕) | 1.00 | 136.03 | 317.83 |
| Density (g/cm³) | 5.51 | 0.26 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.67 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Minimum mass (M sin i) | 136.031 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
HIP
HIP 65407
TIC
TIC 165454978
Gaia DR2
Gaia DR2 1553084230347385344
Gaia DR3
Gaia DR3 1553084230347385344
System
HIP 65407
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 28.13 Earth days (7.7% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.1770 AU.
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.242
0 = alien, 1 = Earth-identical
Insufficient insolation data. Close-orbiting tidally-locked around a cool host.
Discovery Paper
Primary reference
H Eacute Brard et al. 2016Instrument
SOPHIE Spectrograph
Publication
2016-04
Observation locale
Ground
Discovery cohort
Planets confirmed in 2016 at Haute-Provence Observatory (10 shown).
Host System: HIP 65407
Spectral Class
K-type orange
Effective Temperature
5,460 K — cooler than the Sun (5,778 K)
Estimated Age
—
Stellar Radius
0.952 R☉
Stellar Mass
0.930 M☉
Metallicity [Fe/H]
0.25
Extended Stellar Properties
Surface gravity (log g)
4.470 dex
Stellar density
1.572 g/cm³
Systemic radial velocity
-8.72 km/s
Rotational v·sin i
2.80 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
16.157 mas
Total Proper Motion
85.576 mas/yr
PM Right Ascension
0.10 mas/yr
PM Declination
-85.58 mas/yr
Galactic Cartesian (pc)
x = -0.614 · y = -0.237 · z = 0.753
Equatorial (J2000)
RA 201.08766° · Dec 48.88473°
Galactic ℓ, b
108.799° · 67.330°
Ecliptic λ, β
172.328° · 51.751°
HTM-20 index
816367886
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