Key parameters at a glance
- A radius of 8.20 Earth radii
- A mass of 20.00 Earth masses
- Surface gravity around 0.30 g
- An orbital period of 104.616 days
- Semi-major axis 0.4560 AU
- Equilibrium temperature 562 K (289 °C)
- Distance from Earth 581.41 light-years
- Earth Similarity Index 0.220
- Travel time at Voyager 1 speed 10,253,089 years
TOI-4507 b Planet Profile
Physical Specs
Classification
Planet Type
Neptune-like
Discovery
Size rank in cohort
Rank by radius
#141of 574
top 24.4%
This planet
8.20R⊕
Neptune-like median
6.39R⊕
Nearest-size peers
| Metric | Earth | TOI-4507 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 8.20 | 11.21 |
| Mass (M⊕) | 1.00 | 20.00 | 317.83 |
| Density (g/cm³) | 5.51 | 0.20 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.30 | 2.53 |
| Insolation (S⊕) | 1.00 | 23.58 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 20.000 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 179582003
Gaia DR2
Gaia DR2 4657949756881138176
Gaia DR3
Gaia DR3 4657949756881138176
System
TOI-4507
Percentile among Neptune-like cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 104.62 Earth days (28.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.4560 AU.
Transit Fingerprint
Depth
0.611 %
Duration
9.332 h
Impact parameter b
0.120
Rp / R★
0.072300
Transit midpoint (BJD)
2,458,413.8515
Photometric dip
Transit produces a flux drop of 6,112 ppm lasting ≈ 9.33 h.
Extended Orbital Architecture
Planet / star radius ratio
0.072300
Semi-major axis / stellar radius
93.400
Impact parameter (b)
0.120
RV semi-amplitude (K)
3.000 m/s
Transit mid-time (BJD)
2,458,413.8515
Long. of periastron (ω)
-123.00°
Sky-projected obliquity (λ)
-15.00°
Angular separation (arcsec)
2.56000
Eq. Temperature
562K
(289 °C)
Insolation (S⊕)
23.58
Earth = 1.00
Earth Similarity (ESI)
0.220
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.
Discovery Paper
Primary reference
Espinoza Retamal et al. 2026Instrument
TESS CCD Array
Publication
2026-01
Observation locale
Space
Discovery cohort
Planets confirmed in 2025 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-4507
Spectral Class
F-type yellow-white
Effective Temperature
6,260 K — hotter than the Sun (5,778 K)
Estimated Age
0.70 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.040 R☉
Stellar Mass
1.110 M☉
Metallicity [Fe/H]
-0.06
Extended Stellar Properties
Surface gravity (log g)
4.450 dex
Stellar density
1.410 g/cm³
Rotational v·sin i
7.30 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
5.581 mas
Total Proper Motion
22.285 mas/yr
PM Right Ascension
21.92 mas/yr
PM Declination
4.01 mas/yr
Galactic Cartesian (pc)
x = 0.057 · y = 0.337 · z = -0.940
Equatorial (J2000)
RA 80.45137° · Dec -69.98822°
Galactic ℓ, b
280.771° · -32.994°
Ecliptic λ, β
311.509° · -85.087°
HTM-20 index
-1817832462
Similar Worlds
Kepler-703 b
Neptune-like · F-type yellow-white
Radius 8.20 R⊕ · 3,773.1 ly
TOI-4641 b
Neptune-like · F-type yellow-white
Radius 8.18 R⊕ · 281.6 ly
DMPP-2 c
Neptune-like · F-type yellow-white
Radius 8.26 R⊕ · 449.9 ly
Kepler-117 b
Neptune-like · F-type yellow-white
Radius 8.06 R⊕ · 4,747.4 ly
TOI-1836 b
Neptune-like · F-type yellow-white
Radius 8.00 R⊕ · 625.1 ly
TOI-5786 b
Neptune-like · F-type yellow-white
Radius 8.54 R⊕ · 627.8 ly