Key parameters at a glance
- A radius of 13.32 Earth radii
- A mass of 1,017.05 Earth masses
- Surface gravity around 5.74 g
- An orbital period of 1.440 days
- Semi-major axis 0.0207 AU
- Equilibrium temperature 872 K (599 °C)
- Distance from Earth 295.29 light-years
- Earth Similarity Index 0.188
- Travel time at Voyager 1 speed 5,207,466 years
- Almost certainly tidally locked to its host star given the close orbit
TIC 46432937 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#790of 1771
top 44.6%
This planet
13.32R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TIC 46432937 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.32 | 11.21 |
| Mass (M⊕) | 1.00 | 1,017.05 | 317.83 |
| Density (g/cm³) | 5.51 | 2.37 | 1.33 |
| Surface Gravity (g) | 1.00 | 5.74 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 1,017.051 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 46432937
Gaia DR2
Gaia DR2 2984391358868786816
Gaia DR3
Gaia DR3 2984391358868786816
System
TIC 46432937
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 1.44 Earth days (0.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0207 AU.
Transit Fingerprint
Duration
1.195 h
Impact parameter b
0.825
Rp / R★
0.230100
Transit midpoint (BJD)
2,459,952.2889
Extended Orbital Architecture
Planet / star radius ratio
0.230100
Semi-major axis / stellar radius
8.381
Impact parameter (b)
0.825
RV semi-amplitude (K)
837.100 m/s
Transit mid-time (BJD)
2,459,952.2889
Angular separation (arcsec)
0.22800
Eq. Temperature
872K
(599 °C)
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.188
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
Hartman et al. 2024Instrument
TESS CCD Array
Publication
2024-07
Observation locale
Space
Discovery cohort
Planets confirmed in 2024 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TIC 46432937
Spectral Class
M-type red dwarf
Effective Temperature
3,572 K — cooler than the Sun (5,778 K)
Estimated Age
7.40 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.530 R☉
Stellar Mass
0.563 M☉
Metallicity [Fe/H]
0.32
Extended Stellar Properties
Surface gravity (log g)
4.740 dex
Stellar density
5.340 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
11.016 mas
Total Proper Motion
39.278 mas/yr
PM Right Ascension
-13.40 mas/yr
PM Declination
36.92 mas/yr
Galactic Cartesian (pc)
x = 0.103 · y = 0.962 · z = -0.252
Equatorial (J2000)
RA 83.86898° · Dec -14.59719°
Galactic ℓ, b
217.972° · -23.277°
Ecliptic λ, β
82.472° · -37.876°
HTM-20 index
1398800391
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