Key parameters at a glance
- A radius of 2.45 Earth radii
- A mass of 6.59 Earth masses
- Surface gravity around 1.10 g
- An orbital period of 11.099 days
- Equilibrium temperature 712 K (439 °C)
- Distance from Earth 212.58 light-years
- Earth Similarity Index 0.359
- Travel time at Voyager 1 speed 3,748,819 years
- Almost certainly tidally locked to its host star given the close orbit
TOI-913 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1257of 1978
top 63.5%
This planet
2.45R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | TOI-913 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.45 | 11.21 |
| Mass (M⊕) | 1.00 | 6.59 | 317.83 |
| Density (g/cm³) | 5.51 | 2.45 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.10 | 2.53 |
| Insolation (S⊕) | 1.00 | 35.24 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 407126408
Gaia DR2
Gaia DR2 5772195974332632192
Gaia DR3
Gaia DR3 5772195974332632192
System
TOI-913
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 11.10 Earth days (3.0% of a terrestrial year).
Transit Fingerprint
Depth
0.116 %
Duration
3.246 h
Impact parameter b
0.387
Rp / R★
0.030600
Transit midpoint (BJD)
2,458,625.2133
Photometric dip
Transit produces a flux drop of 1,159 ppm lasting ≈ 3.25 h.
Extended Orbital Architecture
Planet / star radius ratio
0.030600
Semi-major axis / stellar radius
24.352
Impact parameter (b)
0.387
Transit mid-time (BJD)
2,458,625.2133
Eq. Temperature
712K
(439 °C)
Insolation (S⊕)
35.24
Earth = 1.00
Earth Similarity (ESI)
0.359
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. Close-orbiting tidally-locked around a cool host.
Discovery Paper
Primary reference
Mistry et al. 2023Instrument
TESS CCD Array
Publication
2023-01
Observation locale
Space
Discovery cohort
Planets confirmed in 2023 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-913
Spectral Class
K-type orange
Effective Temperature
4,969 K — cooler than the Sun (5,778 K)
Estimated Age
—
Stellar Radius
0.733 R☉
Stellar Mass
0.820 M☉
Metallicity [Fe/H]
-0.13
Extended Stellar Properties
Surface gravity (log g)
4.622 dex
Stellar density
2.941 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
15.314 mas
Total Proper Motion
92.515 mas/yr
PM Right Ascension
-40.07 mas/yr
PM Declination
83.39 mas/yr
Galactic Cartesian (pc)
x = -0.093 · y = -0.130 · z = -0.987
Equatorial (J2000)
RA 234.57232° · Dec -80.80343°
Galactic ℓ, b
309.435° · -20.117°
Ecliptic λ, β
259.743° · -58.637°
HTM-20 index
-1518142609
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