Key parameters at a glance
- A radius of 7.16 Earth radii
- A mass of 68.20 Earth masses
- Surface gravity around 1.33 g
- An orbital period of 1.267 days
- Semi-major axis 0.0249 AU
- Equilibrium temperature 2,155 K (1882 °C)
- Distance from Earth 1,582.57 light-years
- Earth Similarity Index 0.070
- Travel time at Voyager 1 speed 27,908,636 years
TOI-3071 b Planet Profile
Physical Specs
Classification
Planet Type
Neptune-like
Discovery
Size rank in cohort
Rank by radius
#192of 574
top 33.3%
This planet
7.16R⊕
Neptune-like median
6.39R⊕
Nearest-size peers
| Metric | Earth | TOI-3071 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 7.16 | 11.21 |
| Mass (M⊕) | 1.00 | 68.20 | 317.83 |
| Density (g/cm³) | 5.51 | 1.02 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.33 | 2.53 |
| Insolation (S⊕) | 1.00 | 2,579.61 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 68.200 M⊕ | Direct mass measurement (not derived). |
| Minimum mass (M sin i) | 67.600 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
TIC
TIC 452006073
Gaia DR2
Gaia DR2 5342880462319699200
Gaia DR3
Gaia DR3 5342880462319699200
System
TOI-3071
Percentile among Neptune-like cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 1.27 Earth days (0.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0249 AU.
Transit Fingerprint
Depth
0.258 %
Duration
1.850 h
Impact parameter b
0.560
Rp / R★
0.050000
Transit midpoint (BJD)
2,458,594.6080
Photometric dip
Transit produces a flux drop of 2,580 ppm lasting ≈ 1.85 h.
Extended Orbital Architecture
Planet / star radius ratio
0.050000
Semi-major axis / stellar radius
4.110
Impact parameter (b)
0.560
RV semi-amplitude (K)
33.700 m/s
Transit mid-time (BJD)
2,458,594.6080
Angular separation (arcsec)
0.05130
Eq. Temperature
2,155K
(1882 °C)
Insolation (S⊕)
2,579.61
Earth = 1.00
Earth Similarity (ESI)
0.070
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
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
Hacker et al. 2024Instrument
TESS CCD Array
Publication
2024-06
Observation locale
Space
Discovery cohort
Planets confirmed in 2024 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-3071
Spectral Class
F-type yellow-white
Effective Temperature
6,177 K — hotter than the Sun (5,778 K)
Estimated Age
0.95 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.310 R☉
Stellar Mass
1.290 M☉
Metallicity [Fe/H]
0.35
Extended Stellar Properties
Surface gravity (log g)
4.370 dex
Stellar density
0.693 g/cm³
Rotational v·sin i
2.00 km/s
Rotation period
26.60 days
Activity index (log R'HK)
-5.150
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
2.033 mas
Total Proper Motion
6.045 mas/yr
PM Right Ascension
-3.36 mas/yr
PM Declination
5.03 mas/yr
Galactic Cartesian (pc)
x = -0.548 · y = 0.065 · z = -0.834
Equatorial (J2000)
RA 173.27905° · Dec -56.50339°
Galactic ℓ, b
292.237° · 4.733°
Ecliptic λ, β
206.428° · -52.260°
HTM-20 index
-324528007
Similar Worlds
Kepler-79 d
Neptune-like · F-type yellow-white
Radius 7.16 R⊕ · 3,329.1 ly
TOI-257 b
Neptune-like · F-type yellow-white
Radius 7.16 R⊕ · 250.8 ly
Kepler-51 b
Neptune-like · F-type yellow-white
Radius 7.10 R⊕ · 2,556.5 ly
Kepler-1085 b
Neptune-like · F-type yellow-white
Radius 7.22 R⊕ · 4,450.5 ly
WASP-166 b
Neptune-like · F-type yellow-white
Radius 7.06 R⊕ · 372.4 ly
HD 151450 b
Neptune-like · F-type yellow-white
Radius 6.94 R⊕ · 142.2 ly