Key parameters at a glance
- A radius of 13.98 Earth radii
- A mass of 638.84 Earth masses
- Surface gravity around 3.27 g
- An orbital period of 0.947 days
- Semi-major axis 0.0193 AU
- Equilibrium temperature 2,097 K (1824 °C)
- Distance from Earth 1,353.99 light-years
- Earth Similarity Index 0.063
- Travel time at Voyager 1 speed 23,877,572 years
TOI-1937 A b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#454of 1771
top 25.6%
This planet
13.98R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-1937 A b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.98 | 11.21 |
| Mass (M⊕) | 1.00 | 638.84 | 317.83 |
| Density (g/cm³) | 5.51 | 1.28 | 1.33 |
| Surface Gravity (g) | 1.00 | 3.27 | 2.53 |
| Insolation (S⊕) | 1.00 | 3,230.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 638.835 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 268301217
Gaia DR2
Gaia DR2 5489726768531119616
Gaia DR3
Gaia DR3 5489726768531119616
System
TOI-1937
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts roughly 22.7 hours long on a nearly circular orbit at a mean orbital distance of 0.0193 AU.
Transit Fingerprint
Depth
1.410 %
Duration
1.377 h
Impact parameter b
0.865
Transit midpoint (BJD)
2,459,085.9102
Photometric dip
Transit produces a flux drop of 14,100 ppm lasting ≈ 1.38 h.
Extended Orbital Architecture
Semi-major axis / stellar radius
3.850
Impact parameter (b)
0.865
RV semi-amplitude (K)
386.000 m/s
Transit mid-time (BJD)
2,459,085.9102
Sky-projected obliquity (λ)
4.00°
Angular separation (arcsec)
0.04650
Eq. Temperature
2,097K
(1824 °C)
Insolation (S⊕)
3,230.00
Earth = 1.00
Earth Similarity (ESI)
0.063
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
Yee et al. 2023Instrument
TESS CCD Array
Publication
2023-03
Observation locale
Space
Discovery cohort
Planets confirmed in 2023 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-1937 A
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,814 K — hotter than the Sun (5,778 K)
Estimated Age
3.60 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.080 R☉
Stellar Mass
1.072 M☉
Metallicity [Fe/H]
0.20
Extended Stellar Properties
Surface gravity (log g)
4.401 dex
Stellar density
1.198 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
2.380 mas
Total Proper Motion
12.641 mas/yr
PM Right Ascension
-5.68 mas/yr
PM Declination
11.30 mas/yr
Galactic Cartesian (pc)
x = -0.271 · y = 0.547 · z = -0.792
Equatorial (J2000)
RA 116.37072° · Dec -52.38326°
Galactic ℓ, b
265.308° · -13.549°
Ecliptic λ, β
145.450° · -70.783°
HTM-20 index
-515217672
Similar Worlds
HD 360 b
Gas Giant · G-type yellow (Sun-like)
Radius 14.00 R⊕ · 363.8 ly
HD 211810 b
Gas Giant · G-type yellow (Sun-like)
Radius 14.00 R⊕ · 210.8 ly
HD 37124 b
Gas Giant · G-type yellow (Sun-like)
Radius 14.00 R⊕ · 103.3 ly
HD 224693 b
Gas Giant · G-type yellow (Sun-like)
Radius 14.00 R⊕ · 305.0 ly
HD 74698 c
Gas Giant · G-type yellow (Sun-like)
Radius 14.00 R⊕ · 169.8 ly
HD 9446 b
Gas Giant · G-type yellow (Sun-like)
Radius 14.00 R⊕ · 164.2 ly