Key parameters at a glance
- A radius of 8.68 Earth radii
- A mass of 26.70 Earth masses
- Surface gravity around 0.35 g
- An orbital period of 23.286 days
- Semi-major axis 0.1511 AU
- Equilibrium temperature 513 K (240 °C)
- Distance from Earth 1,289.61 light-years
- Earth Similarity Index 0.241
- Travel time at Voyager 1 speed 22,742,347 years
- Almost certainly tidally locked to its host star given the close orbit
1 sibling around TOI-2525
TOI-2525 b shares its host star with 1 other confirmed planet. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| TOI-2525 b this | Neptune-like | 8.68 | 26.70 | 23.286 | 513 | 2023 |
| TOI-2525 c | Gas Giant | 10.13 | 208.81 | 49.252 | 400 | 2023 |
TOI-2525 b Planet Profile
Physical Specs
Classification
Planet Type
Neptune-like
Discovery
Size rank in cohort
Rank by radius
#109of 574
top 18.8%
This planet
8.68R⊕
Neptune-like median
6.39R⊕
Nearest-size peers
| Metric | Earth | TOI-2525 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 8.68 | 11.21 |
| Mass (M⊕) | 1.00 | 26.70 | 317.83 |
| Density (g/cm³) | 5.51 | 0.23 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.35 | 2.53 |
| Insolation (S⊕) | 1.00 | 16.36 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 26.698 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 149601126
Gaia DR2
Gaia DR2 4758931211166869632
Gaia DR3
Gaia DR3 4758931211166869632
System
TOI-2525
Percentile among Neptune-like cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 23.29 Earth days (6.4% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.1511 AU.
Transit Fingerprint
Depth
0.647 %
Duration
4.050 h
Rp / R★
0.101300
Transit midpoint (BJD)
2,458,333.5289
Photometric dip
Transit produces a flux drop of 6,474 ppm lasting ≈ 4.05 h.
Extended Orbital Architecture
Planet / star radius ratio
0.101300
RV semi-amplitude (K)
6.700 m/s
Transit mid-time (BJD)
2,458,333.5289
Long. of periastron (ω)
345.90°
Angular separation (arcsec)
0.38200
Eq. Temperature
513K
(240 °C)
Insolation (S⊕)
16.36
Earth = 1.00
Earth Similarity (ESI)
0.241
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.
Transit timing variations
Gravitational interactions from neighbours have been detected.
Discovery Paper
Primary reference
Trifonov et al. 2023Instrument
TESS CCD Array
Publication
2023-02
Observation locale
Space
Discovery cohort
Planets confirmed in 2023 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-2525
Spectral Class
K-type orange
Effective Temperature
5,096 K — cooler than the Sun (5,778 K)
Estimated Age
3.99 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.785 R☉
Stellar Mass
0.849 M☉
Metallicity [Fe/H]
0.14
Extended Stellar Properties
Surface gravity (log g)
4.580 dex
Stellar density
2.039 g/cm³
Rotational v·sin i
1.50 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
2.500 mas
Total Proper Motion
31.879 mas/yr
PM Right Ascension
21.76 mas/yr
PM Declination
23.30 mas/yr
Galactic Cartesian (pc)
x = 0.027 · y = 0.491 · z = -0.871
Equatorial (J2000)
RA 86.85097° · Dec -60.52131°
Galactic ℓ, b
269.367° · -31.180°
Ecliptic λ, β
75.497° · -83.802°
HTM-20 index
-1467870348
Similar Worlds
Kepler-148 d
Neptune-like · K-type orange
Radius 8.68 R⊕ · 2,580.4 ly
WASP-59 b
Neptune-like · K-type orange
Radius 8.69 R⊕ · 378.1 ly
WASP-29 b
Neptune-like · K-type orange
Radius 8.63 R⊕ · 285.7 ly
HATS-49 b
Neptune-like · K-type orange
Radius 8.57 R⊕ · 1,058.1 ly
HD 3765 b
Neptune-like · K-type orange
Radius 8.56 R⊕ · 58.5 ly
Kepler-16 b
Neptune-like · K-type orange
Radius 8.45 R⊕ · 244.9 ly