Key parameters at a glance
- A radius of 3.23 Earth radii
- A mass of 10.50 Earth masses
- Surface gravity around 1.01 g
- An orbital period of 3.771 days
- Equilibrium temperature 949 K (676 °C)
- Distance from Earth 292.36 light-years
- Earth Similarity Index 0.239
- Travel time at Voyager 1 speed 5,155,706 years
- Almost certainly tidally locked to its host star given the close orbit
TOI-5704 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#330of 1978
top 16.6%
This planet
3.23R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | TOI-5704 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 3.23 | 11.21 |
| Mass (M⊕) | 1.00 | 10.50 | 317.83 |
| Density (g/cm³) | 5.51 | 1.72 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.01 | 2.53 |
| Insolation (S⊕) | 1.00 | 125.06 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 148673433
Gaia DR2
Gaia DR2 784983789642216320
Gaia DR3
Gaia DR3 784983789642216320
System
TOI-5704
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.77 Earth days (1.0% of a terrestrial year).
Transit Fingerprint
Depth
0.165 %
Duration
2.338 h
Impact parameter b
0.424
Rp / R★
0.038900
Transit midpoint (BJD)
2,459,610.7568
Photometric dip
Transit produces a flux drop of 1,648 ppm lasting ≈ 2.34 h.
Extended Orbital Architecture
Planet / star radius ratio
0.038900
Semi-major axis / stellar radius
11.695
Impact parameter (b)
0.424
Transit mid-time (BJD)
2,459,610.7568
Eq. Temperature
949K
(676 °C)
Insolation (S⊕)
125.06
Earth = 1.00
Earth Similarity (ESI)
0.239
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-5704
Spectral Class
K-type orange
Effective Temperature
4,590 K — cooler than the Sun (5,778 K)
Estimated Age
—
Stellar Radius
0.758 R☉
Stellar Mass
0.730 M☉
Metallicity [Fe/H]
0.43
Extended Stellar Properties
Surface gravity (log g)
4.543 dex
Stellar density
2.368 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
11.127 mas
Total Proper Motion
49.876 mas/yr
PM Right Ascension
47.36 mas/yr
PM Declination
-15.65 mas/yr
Galactic Cartesian (pc)
x = -0.696 · y = 0.125 · z = 0.707
Equatorial (J2000)
RA 169.82487° · Dec 44.98908°
Galactic ℓ, b
162.709° · 64.372°
Ecliptic λ, β
150.371° · 36.794°
HTM-20 index
-963198771
Similar Worlds
Kepler-472 b
Sub-Neptune · K-type orange
Radius 3.22 R⊕ · 1,000.0 ly
HD 48948 d
Sub-Neptune · K-type orange
Radius 3.24 R⊕ · 55.1 ly
Kepler-742 b
Sub-Neptune · K-type orange
Radius 3.24 R⊕ · 1,595.7 ly
HD 20781 d
Sub-Neptune · K-type orange
Radius 3.25 R⊕ · 117.3 ly
TOI-2093 b
Sub-Neptune · K-type orange
Radius 3.25 R⊕ · 270.1 ly
K2-36 c
Sub-Neptune · K-type orange
Radius 3.20 R⊕ · 358.0 ly