Key parameters at a glance
- A radius of 11.55 Earth radii
- A mass of 743.72 Earth masses
- Surface gravity around 5.58 g
- An orbital period of 64.595 days
- Semi-major axis 0.3270 AU
- Equilibrium temperature 636 K (363 °C)
- Distance from Earth 966.31 light-years
- Earth Similarity Index 0.273
- Travel time at Voyager 1 speed 17,040,799 years
TOI-2529 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1587of 1771
top 89.6%
This planet
11.55R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-2529 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 11.55 | 11.21 |
| Mass (M⊕) | 1.00 | 743.72 | 317.83 |
| Density (g/cm³) | 5.51 | 2.66 | 1.33 |
| Surface Gravity (g) | 1.00 | 5.58 | 2.53 |
| Insolation (S⊕) | 1.00 | 70.97 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 743.718 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 269333648
Gaia DR2
Gaia DR2 5513558648700780416
Gaia DR3
Gaia DR3 5513558648705418368
System
TOI-2529
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 64.59 Earth days (17.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.3270 AU.
Transit Fingerprint
Depth
0.424 %
Duration
8.943 h
Impact parameter b
0.680
Rp / R★
0.061000
Transit midpoint (BJD)
2,458,538.5151
Photometric dip
Transit produces a flux drop of 4,240 ppm lasting ≈ 8.94 h.
Extended Orbital Architecture
Planet / star radius ratio
0.061000
Impact parameter (b)
0.680
RV semi-amplitude (K)
110.500 m/s
Transit mid-time (BJD)
2,458,538.5151
Long. of periastron (ω)
103.80°
Angular separation (arcsec)
1.10000
Eq. Temperature
636K
(363 °C)
Insolation (S⊕)
70.97
Earth = 1.00
Earth Similarity (ESI)
0.273
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.
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
Jones et al. 2024Instrument
TESS CCD Array
Publication
2024-03
Observation locale
Space
Discovery cohort
Planets confirmed in 2024 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-2529
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,802 K — hotter than the Sun (5,778 K)
Estimated Age
7.23 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.700 R☉
Stellar Mass
1.110 M☉
Metallicity [Fe/H]
0.10
Extended Stellar Properties
Surface gravity (log g)
4.030 dex
Stellar density
0.326 g/cm³
Rotational v·sin i
3.70 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
3.347 mas
Total Proper Motion
23.262 mas/yr
PM Right Ascension
14.91 mas/yr
PM Declination
17.86 mas/yr
Galactic Cartesian (pc)
x = -0.296 · y = 0.534 · z = -0.792
Equatorial (J2000)
RA 118.99454° · Dec -52.35483°
Galactic ℓ, b
266.056° · -12.122°
Ecliptic λ, β
149.384° · -69.879°
HTM-20 index
2131151896
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