Key parameters at a glance
- A radius of 12.70 Earth radii
- A mass of 108.06 Earth masses
- Surface gravity around 0.67 g
- An orbital period of 2,247.000 days
- Semi-major axis 3.1100 AU
- Distance from Earth 21.30 light-years
- Earth Similarity Index 0.261
- Travel time at Voyager 1 speed 375,663 years
3 siblings around HD 219134
HD 219134 h 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 219134 b | Super-Earth | 1.60 | 4.74 | 3.093 | 1,015 | 2015 |
| HD 219134 c | Super-Earth | 1.51 | 4.36 | 6.765 | 782 | 2015 |
| HD 219134 d | Super-Earth | 1.61 | 16.17 | 46.859 | 411 | 2015 |
| HD 219134 h this | Gas Giant | 12.70 | 108.06 | 2,247.000 | — | 2015 |
HD 219134 h Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1130of 1771
top 63.7%
This planet
12.70R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | HD 219134 h | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 12.70 | 11.21 |
| Mass (M⊕) | 1.00 | 108.06 | 317.83 |
| Density (g/cm³) | 5.51 | 0.29 | 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) | 108.062 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
HD
HD 219134
HIP
HIP 114622
TIC
TIC 283722336
Gaia DR2
Gaia DR2 2009481748875806976
Gaia DR3
Gaia DR3 2009481748875806976
System
HD 219134
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts about 6.15 Earth years on a nearly circular orbit at a mean orbital distance of 3.1100 AU.
Extended Orbital Architecture
RV semi-amplitude (K)
6.100 m/s
Transit mid-time (BJD)
2,456,761.0000
Long. of periastron (ω)
215.00°
Angular separation (arcsec)
476.00000
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.261
0 = alien, 1 = Earth-identical
Discovery Paper
Primary reference
Motalebi et al. 2015Instrument
HARPS-N Spectrograph
Publication
2015-12
Observation locale
Ground
Discovery cohort
Planets confirmed in 2015 at Roque de los Muchachos Observatory (3 shown).
Host System: HD 219134
Spectral Class
K-type orange
Effective Temperature
4,913 K — cooler than the Sun (5,778 K)
Estimated Age
12.46 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.770 R☉
Stellar Mass
0.794 M☉
Metallicity [Fe/H]
0.08
Extended Stellar Properties
Surface gravity (log g)
4.510 dex
Stellar density
2.438 g/cm³
Systemic radial velocity
-18.42 km/s
Rotational v·sin i
0.40 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 7 bands
Astrometric Data
Parallax
153.081 mas
Total Proper Motion
2,095.381 mas/yr
PM Right Ascension
2,074.52 mas/yr
PM Declination
294.94 mas/yr
Galactic Cartesian (pc)
x = 0.531 · y = -0.110 · z = 0.840
Equatorial (J2000)
RA 348.33720° · Dec 57.16963°
Galactic ℓ, b
109.907° · -3.201°
Ecliptic λ, β
23.752° · 54.542°
HTM-20 index
331589954
Observation Record
Photometric series
1
RV measurements
4
Stellar spectra
5
Archive notes
3
Similar Worlds
HD 168863 b
Gas Giant · K-type orange
Radius 12.70 R⊕ · 130.1 ly
HD 27894 d
Gas Giant · K-type orange
Radius 12.70 R⊕ · 142.9 ly
HIP 56640 b
Gas Giant · K-type orange
Radius 12.70 R⊕ · 399.0 ly
eps CrB b
Gas Giant · K-type orange
Radius 12.70 R⊕ · 227.9 ly
HIP 67851 c
Gas Giant · K-type orange
Radius 12.70 R⊕ · 209.1 ly
HD 113996 b
Gas Giant · K-type orange
Radius 12.70 R⊕ · 379.4 ly