Key parameters at a glance
- A radius of 1.67 Earth radii
- A mass of 4.97 Earth masses
- Surface gravity around 1.78 g
- An orbital period of 0.960 days
- Semi-major axis 0.0180 AU
- Equilibrium temperature 1,774 K (1501 °C)
- Distance from Earth 154.24 light-years
- Earth Similarity Index 0.153
- 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 b shares its host star with 3 other confirmed planets. Side-by-side measurements below.
HD 3167 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#452of 1176
top 38.4%
This planet
1.67R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | HD 3167 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.67 | 11.21 |
| Mass (M⊕) | 1.00 | 4.97 | 317.83 |
| Density (g/cm³) | 5.51 | 5.60 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.78 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,650.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 4.970 M⊕ | Direct mass measurement (not derived). |
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 roughly 23 hours long on a nearly circular orbit at a mean orbital distance of 0.0180 AU.
Transit Fingerprint
Depth
0.029 %
Duration
1.609 h
Impact parameter b
0.110
Rp / R★
0.017250
Transit midpoint (BJD)
2,457,394.3745
Photometric dip
Transit produces a flux drop of 294 ppm lasting ≈ 1.61 h.
Extended Orbital Architecture
Planet / star radius ratio
0.017250
Semi-major axis / stellar radius
4.450
Impact parameter (b)
0.110
RV semi-amplitude (K)
3.560 m/s
Transit mid-time (BJD)
2,457,394.3745
Sky-projected obliquity (λ)
-6.60°
True obliquity (ψ)
29.50°
Angular separation (arcsec)
0.38000
Eq. Temperature
1,774K
(1501 °C)
Insolation (S⊕)
1,650.00
Earth = 1.00
Earth Similarity (ESI)
0.153
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched. Close-orbiting tidally-locked around a cool host.
Detection Signatures
Transit photometry
A transit dip has been observed from at least one telescope.
Radial velocity
Stellar wobble has been measured spectroscopically.
Discovery Paper
Primary reference
Vanderburg et al. 2016Instrument
Kepler CCD Array
Publication
2016-09
Observation locale
Space
Discovery cohort
Planets confirmed in 2016 at K2 (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
Kepler-763 d
Super-Earth · K-type orange
Radius 1.67 R⊕ · 3,139.1 ly
Kepler-1480 b
Super-Earth · K-type orange
Radius 1.67 R⊕ · 1,633.7 ly
Kepler-1143 b
Super-Earth · K-type orange
Radius 1.67 R⊕ · 1,810.8 ly
Kepler-1802 b
Super-Earth · K-type orange
Radius 1.67 R⊕ · 2,076.6 ly
Kepler-167 c
Super-Earth · K-type orange
Radius 1.67 R⊕ · 1,115.2 ly
TOI-871 b
Super-Earth · K-type orange
Radius 1.66 R⊕ · 221.9 ly