Key parameters at a glance
- A radius of 3.33 Earth radii
- A mass of 21.13 Earth masses
- Surface gravity around 1.90 g
- An orbital period of 15.538 days
- Semi-major axis 0.1160 AU
- Equilibrium temperature 662 K (389 °C)
- Distance from Earth 397.39 light-years
- Earth Similarity Index 0.371
- Travel time at Voyager 1 speed 7,007,945 years
- Almost certainly tidally locked to its host star given the close orbit
1 sibling around TOI-1472
TOI-1472 c 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-1472 b | Neptune-like | 4.06 | 18.05 | 6.363 | 891 | 2024 |
| TOI-1472 c this | Sub-Neptune | 3.33 | 21.13 | 15.538 | 662 | 2025 |
TOI-1472 c Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#259of 1978
top 13.0%
This planet
3.33R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | TOI-1472 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 3.33 | 11.21 |
| Mass (M⊕) | 1.00 | 21.13 | 317.83 |
| Density (g/cm³) | 5.51 | 3.14 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.90 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 21.130 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 306955329
Gaia DR2
Gaia DR2 402396521052843264
Gaia DR3
Gaia DR3 402396521052843264
System
TOI-1472
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 15.54 Earth days (4.3% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.1160 AU.
Transit Fingerprint
Duration
2.830 h
Impact parameter b
0.657
Rp / R★
0.036000
Transit midpoint (BJD)
2,459,689.9357
Extended Orbital Architecture
Planet / star radius ratio
0.036000
Semi-major axis / stellar radius
33.665
Impact parameter (b)
0.657
RV semi-amplitude (K)
6.030 m/s
Transit mid-time (BJD)
2,459,689.9357
Long. of periastron (ω)
164.70°
Angular separation (arcsec)
0.95200
Eq. Temperature
662K
(389 °C)
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.371
0 = alien, 1 = Earth-identical
Insufficient insolation data — 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
Carleo et al. 2025Instrument
Multiple Instruments
Publication
2025-11
Observation locale
Ground
Discovery cohort
Planets confirmed in 2025 at Multiple Observatories (12 shown).
Host System: TOI-1472
Spectral Class
K-type orange
Effective Temperature
5,100 K — cooler than the Sun (5,778 K)
Estimated Age
3.10 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.840 R☉
Stellar Mass
0.870 M☉
Metallicity [Fe/H]
0.27
Extended Stellar Properties
Surface gravity (log g)
4.500 dex
Stellar density
2.184 g/cm³
Systemic radial velocity
-15.05 km/s
Activity index (log R'HK)
-4.790
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
8.180 mas
Total Proper Motion
104.241 mas/yr
PM Right Ascension
103.37 mas/yr
PM Declination
-13.43 mas/yr
Galactic Cartesian (pc)
x = 0.641 · y = 0.161 · z = 0.751
Equatorial (J2000)
RA 14.11426° · Dec 48.63752°
Galactic ℓ, b
123.787° · -14.226°
Ecliptic λ, β
34.855° · 38.646°
HTM-20 index
-465577535
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