Key parameters at a glance
- A radius of 1.92 Earth radii
- A mass of 4.33 Earth masses
- Surface gravity around 1.17 g
- An orbital period of 8.411 days
- Semi-major axis 0.0763 AU
- Equilibrium temperature 860 K (586 °C)
- Distance from Earth 154.24 light-years
- Earth Similarity Index 0.323
- Travel time at Voyager 1 speed 2,720,002 years
- Almost certainly tidally locked to its host star given the close orbit
3 siblings around HD 3167
HD 3167 d shares its host star with 3 other confirmed planets. Side-by-side measurements below.
HD 3167 d Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#102of 1176
top 8.6%
This planet
1.92R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | HD 3167 d | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.92 | 11.21 |
| Mass (M⊕) | 1.00 | 4.33 | 317.83 |
| Density (g/cm³) | 5.51 | 3.36 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.17 | 2.53 |
| Insolation (S⊕) | 1.00 | 88.90 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Minimum mass (M sin i) | 4.330 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
HD
HD 3167
HIP
HIP 2736
TIC
TIC 318707987
Gaia DR2
Gaia DR2 2554032474712538880
Gaia DR3
Gaia DR3 2554032474712538880
System
HD 3167
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 8.41 Earth days (2.3% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.0763 AU.
Extended Orbital Architecture
Semi-major axis / stellar radius
19.020
RV semi-amplitude (K)
1.550 m/s
Transit mid-time (BJD)
2,457,745.3700
Angular separation (arcsec)
1.61000
Eq. Temperature
860K
(586 °C)
Insolation (S⊕)
88.90
Earth = 1.00
Earth Similarity (ESI)
0.323
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. Close-orbiting tidally-locked around a cool host.
Discovery Paper
Primary reference
Christiansen et al. 2017Instrument
Multiple Instruments
Publication
2017-09
Observation locale
Ground
Discovery cohort
Planets confirmed in 2017 at Multiple Observatories (12 shown).
Host System: HD 3167
Spectral Class
K-type orange
Effective Temperature
5,261 K — cooler than the Sun (5,778 K)
Estimated Age
7.80 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.880 R☉
Stellar Mass
0.837 M☉
Metallicity [Fe/H]
0.04
Extended Stellar Properties
Surface gravity (log g)
4.530 dex
Stellar density
1.817 g/cm³
Systemic radial velocity
19.53 km/s
Rotational v·sin i
2.41 km/s
Rotation period
23.52 days
Activity index (log R'HK)
-5.040
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 12 bands
Astrometric Data
Parallax
21.118 mas
Total Proper Motion
203.880 mas/yr
PM Right Ascension
107.41 mas/yr
PM Declination
-173.29 mas/yr
Galactic Cartesian (pc)
x = 0.986 · y = 0.152 · z = 0.076
Equatorial (J2000)
RA 8.74015° · Dec 4.38072°
Galactic ℓ, b
115.111° · -58.241°
Ecliptic λ, β
9.749° · 0.562°
HTM-20 index
-1000385905
Similar Worlds
K2-339 b
Super-Earth · K-type orange
Radius 1.92 R⊕ · 1,175.3 ly
K2-322 b
Super-Earth · K-type orange
Radius 1.92 R⊕ · 402.5 ly
Kepler-1987 e
Super-Earth · K-type orange
Radius 1.92 R⊕ · 1,942.9 ly
TOI-1467 b
Super-Earth · K-type orange
Radius 1.92 R⊕ · 122.1 ly
K2-414 c
Super-Earth · K-type orange
Radius 1.93 R⊕ · 848.1 ly
K2-49 b
Super-Earth · K-type orange
Radius 1.93 R⊕ · 1,490.9 ly