Key parameters at a glance
- A radius of 10.87 Earth radii
- A mass of 187.52 Earth masses
- Surface gravity around 1.59 g
- An orbital period of 11.889 days
- Semi-major axis 0.0990 AU
- Equilibrium temperature 1,178 K (905 °C)
- Distance from Earth 1,016.64 light-years
- Earth Similarity Index 0.124
- Travel time at Voyager 1 speed 17,928,526 years
TOI-3837 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1680of 1771
top 94.8%
This planet
10.87R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-3837 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 10.87 | 11.21 |
| Mass (M⊕) | 1.00 | 187.52 | 317.83 |
| Density (g/cm³) | 5.51 | 0.82 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.59 | 2.53 |
| Insolation (S⊕) | 1.00 | 138.07 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 187.519 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 308073360
Gaia DR2
Gaia DR2 726500525642401536
Gaia DR3
Gaia DR3 726500525642401536
System
TOI-3837
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 11.89 Earth days (3.3% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.0990 AU.
Transit Fingerprint
Depth
0.780 %
Duration
4.803 h
Impact parameter b
0.745
Rp / R★
0.083000
Transit midpoint (BJD)
2,458,876.2853
Photometric dip
Transit produces a flux drop of 7,800 ppm lasting ≈ 4.80 h.
Extended Orbital Architecture
Planet / star radius ratio
0.083000
Impact parameter (b)
0.745
RV semi-amplitude (K)
58.080 m/s
Transit mid-time (BJD)
2,458,876.2853
Long. of periastron (ω)
279.90°
Angular separation (arcsec)
0.31800
Eq. Temperature
1,178K
(905 °C)
Insolation (S⊕)
138.07
Earth = 1.00
Earth Similarity (ESI)
0.124
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
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
Tala Pinto et al. 2025Instrument
TESS CCD Array
Publication
2025-02
Observation locale
Space
Discovery cohort
Planets confirmed in 2025 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-3837
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,905 K — hotter than the Sun (5,778 K)
Estimated Age
11.20 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.200 R☉
Stellar Mass
0.890 M☉
Metallicity [Fe/H]
-0.26
Extended Stellar Properties
Surface gravity (log g)
4.229 dex
Stellar density
0.734 g/cm³
Rotational v·sin i
3.47 km/s
Activity index (log R'HK)
-5.256
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
3.180 mas
Total Proper Motion
62.519 mas/yr
PM Right Ascension
50.38 mas/yr
PM Declination
-37.03 mas/yr
Galactic Cartesian (pc)
x = -0.810 · y = 0.419 · z = 0.411
Equatorial (J2000)
RA 152.66628° · Dec 24.27312°
Galactic ℓ, b
208.235° · 53.822°
Ecliptic λ, β
145.931° · 12.161°
HTM-20 index
40616194
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