Key parameters at a glance
- A radius of 12.70 Earth radii
- A mass of 2,297.90 Earth masses
- Surface gravity around 14.25 g
- An orbital period of 1,920.000 days
- Semi-major axis 2.7800 AU
- Equilibrium temperature 123 K (-150 °C)
- Distance from Earth 603.34 light-years
- Earth Similarity Index 0.259
- Travel time at Voyager 1 speed 10,639,952 years
1 sibling around TOI-2537
TOI-2537 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-2537 b | Gas Giant | 11.25 | 415.40 | 94.102 | 338 | 2024 |
| TOI-2537 c this | Gas Giant | 12.70 | 2,297.90 | 1,920.000 | 123 | 2024 |
TOI-2537 c Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1130of 1771
top 63.7%
This planet
12.70R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-2537 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 12.70 | 11.21 |
| Mass (M⊕) | 1.00 | 2,297.90 | 317.83 |
| Density (g/cm³) | 5.51 | 6.16 | 1.33 |
| Surface Gravity (g) | 1.00 | 14.25 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Minimum mass (M sin i) | 2,297.899 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
TIC
TIC 399967279
Gaia DR2
Gaia DR2 12320268307415552
Gaia DR3
Gaia DR3 12320268307415552
System
TOI-2537
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts about 5.26 Earth years on a mildly elliptical path at a mean orbital distance of 2.7800 AU.
Extended Orbital Architecture
RV semi-amplitude (K)
145.900 m/s
Transit mid-time (BJD)
2,460,060.0000
Long. of periastron (ω)
-35.60°
Angular separation (arcsec)
15.00000
Eq. Temperature
123K
(-150 °C)
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.259
0 = alien, 1 = Earth-identical
Insufficient insolation data — any water would exist as deep ice.
Discovery Paper
Primary reference
Heidari et al. 2024Instrument
Multiple Instruments
Publication
2025-02
Observation locale
Ground
Discovery cohort
Planets confirmed in 2024 at Multiple Observatories (12 shown).
Host System: TOI-2537
Spectral Class
K-type orange
Effective Temperature
4,870 K — cooler than the Sun (5,778 K)
Estimated Age
1.10 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.771 R☉
Stellar Mass
0.771 M☉
Metallicity [Fe/H]
0.08
Extended Stellar Properties
Surface gravity (log g)
4.551 dex
Stellar density
2.370 g/cm³
Rotational v·sin i
3.00 km/s
Rotation period
19.00 days
Activity index (log R'HK)
-4.500
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
5.378 mas
Total Proper Motion
47.925 mas/yr
PM Right Ascension
31.44 mas/yr
PM Declination
-36.17 mas/yr
Galactic Cartesian (pc)
x = 0.573 · y = 0.800 · z = 0.175
Equatorial (J2000)
RA 54.38827° · Dec 10.05775°
Galactic ℓ, b
175.953° · -35.197°
Ecliptic λ, β
54.500° · -9.102°
HTM-20 index
488728395
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