Key parameters at a glance
- A radius of 13.60 Earth radii
- A mass of 422.71 Earth masses
- Surface gravity around 2.29 g
- An orbital period of 201.990 days
- Semi-major axis 0.6890 AU
- Distance from Earth 120.73 light-years
- Earth Similarity Index 0.333
- Travel time at Voyager 1 speed 2,129,124 years
3 siblings around HD 141399
HD 141399 c shares its host star with 3 other confirmed planets. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| HD 141399 b | Gas Giant | 14.30 | 143.34 | 94.440 | — | 2014 |
| HD 141399 c this | Gas Giant | 13.60 | 422.71 | 201.990 | — | 2014 |
| HD 141399 d | Gas Giant | 13.70 | 375.04 | 1,069.800 | — | 2014 |
| HD 141399 e | Gas Giant | 14.10 | 209.77 | 5,000.000 | — | 2014 |
HD 141399 c 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 | HD 141399 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.60 | 11.21 |
| Mass (M⊕) | 1.00 | 422.71 | 317.83 |
| Density (g/cm³) | 5.51 | 0.92 | 1.33 |
| Surface Gravity (g) | 1.00 | 2.29 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Minimum mass (M sin i) | 422.714 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
HD
HD 141399
HIP
HIP 77301
TIC
TIC 156067565
Gaia DR2
Gaia DR2 1398218223733415552
Gaia DR3
Gaia DR3 1398218223733415552
System
HD 141399
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 201.99 Earth days (55.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.6890 AU.
Extended Orbital Architecture
RV semi-amplitude (K)
44.200 m/s
Transit mid-time (BJD)
2,455,626.0200
Long. of periastron (ω)
-140.00°
Angular separation (arcsec)
18.60000
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.333
0 = alien, 1 = Earth-identical
Discovery Paper
Primary reference
Vogt et al. 2014Instrument
Multiple Instruments
Publication
2014-06
Observation locale
Ground
Discovery cohort
Planets confirmed in 2014 at Multiple Observatories (12 shown).
Host System: HD 141399
Spectral Class
K-type orange
Effective Temperature
5,600 K — cooler than the Sun (5,778 K)
Estimated Age
—
Stellar Radius
1.387 R☉
Stellar Mass
1.070 M☉
Metallicity [Fe/H]
0.35
Extended Stellar Properties
Surface gravity (log g)
4.280 dex
Stellar density
0.512 g/cm³
Systemic radial velocity
-21.55 km/s
Rotational v·sin i
2.90 km/s
Activity index (log R'HK)
-5.170
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
26.986 mas
Total Proper Motion
108.534 mas/yr
PM Right Ascension
-108.36 mas/yr
PM Declination
6.20 mas/yr
Galactic Cartesian (pc)
x = -0.374 · y = -0.570 · z = 0.731
Equatorial (J2000)
RA 236.72354° · Dec 46.98629°
Galactic ℓ, b
74.989° · 50.456°
Ecliptic λ, β
211.833° · 63.859°
HTM-20 index
-1876208016
Similar Worlds
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Radius 13.60 R⊕ · 122.8 ly
HD 185283 b
Gas Giant · K-type orange
Radius 13.60 R⊕ · 102.4 ly
HD 331093 b
Gas Giant · K-type orange
Radius 13.60 R⊕ · 163.7 ly
HD 167042 b
Gas Giant · K-type orange
Radius 13.60 R⊕ · 162.0 ly
HD 10442 b
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Radius 13.60 R⊕ · 441.5 ly
HD 83443 c
Gas Giant · K-type orange
Radius 13.60 R⊕ · 133.4 ly