Key parameters at a glance
- A radius of 11.07 Earth radii
- A mass of 211.04 Earth masses
- Surface gravity around 1.72 g
- An orbital period of 2.543 days
- Semi-major axis 0.0307 AU
- Equilibrium temperature 774 K (501 °C)
- Distance from Earth 663.24 light-years
- Earth Similarity Index 0.195
- Travel time at Voyager 1 speed 11,696,320 years
- Almost certainly tidally locked to its host star given the close orbit
TOI-5007 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1659of 1771
top 93.6%
This planet
11.07R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-5007 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 11.07 | 11.21 |
| Mass (M⊕) | 1.00 | 211.04 | 317.83 |
| Density (g/cm³) | 5.51 | 0.85 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.72 | 2.53 |
| Insolation (S⊕) | 1.00 | 85.30 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 211.038 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 424196109
Gaia DR2
Gaia DR2 5833386583912265728
Gaia DR3
Gaia DR3 5833386583912265728
System
TOI-5007
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 2.54 Earth days (0.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0307 AU.
Transit Fingerprint
Depth
2.130 %
Duration
34.610 h
Impact parameter b
0.836
Rp / R★
0.154700
Transit midpoint (BJD)
2,460,068.8110
Photometric dip
Transit produces a flux drop of 21,300 ppm lasting ≈ 34.61 h.
Extended Orbital Architecture
Planet / star radius ratio
0.154700
Semi-major axis / stellar radius
10.050
Impact parameter (b)
0.836
RV semi-amplitude (K)
131.400 m/s
Transit mid-time (BJD)
2,460,068.8110
Long. of periastron (ω)
95.00°
Angular separation (arcsec)
0.15100
Eq. Temperature
774K
(501 °C)
Insolation (S⊕)
85.30
Earth = 1.00
Earth Similarity (ESI)
0.195
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.
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
Dransfield et al. 2026Instrument
TESS CCD Array
Publication
2026-03
Observation locale
Space
Discovery cohort
Planets confirmed in 2026 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-5007
Spectral Class
M-type red dwarf
Effective Temperature
3,793 K — cooler than the Sun (5,778 K)
Estimated Age
4.00 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.656 R☉
Stellar Mass
0.632 M☉
Metallicity [Fe/H]
0.43
Extended Stellar Properties
Surface gravity (log g)
4.604 dex
Stellar density
3.460 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
4.889 mas
Total Proper Motion
32.782 mas/yr
PM Right Ascension
-13.45 mas/yr
PM Declination
-29.89 mas/yr
Galactic Cartesian (pc)
x = -0.270 · y = -0.402 · z = -0.875
Equatorial (J2000)
RA 236.06387° · Dec -61.04136°
Galactic ℓ, b
322.363° · -4.869°
Ecliptic λ, β
249.330° · -40.014°
HTM-20 index
1662590416
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