Key parameters at a glance
- A radius of 2.59 Earth radii
- A mass of 13.50 Earth masses
- Surface gravity around 2.02 g
- An orbital period of 6.444 days
- Semi-major axis 0.0615 AU
- Equilibrium temperature 784 K (511 °C)
- Distance from Earth 222.02 light-years
- Earth Similarity Index 0.342
- Travel time at Voyager 1 speed 3,915,373 years
- Almost certainly tidally locked to its host star given the close orbit
1 sibling around TOI-1064
TOI-1064 b shares its host star with 1 other confirmed planet. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| TOI-1064 b this | Sub-Neptune | 2.59 | 13.50 | 6.444 | 784 | 2022 |
| TOI-1064 c | Sub-Neptune | 2.65 | 2.50 | 12.227 | 634 | 2022 |
TOI-1064 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1052of 1978
top 53.1%
This planet
2.59R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | TOI-1064 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.59 | 11.21 |
| Mass (M⊕) | 1.00 | 13.50 | 317.83 |
| Density (g/cm³) | 5.51 | 4.30 | 1.33 |
| Surface Gravity (g) | 1.00 | 2.02 | 2.53 |
| Insolation (S⊕) | 1.00 | 62.90 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 13.500 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 79748331
Gaia DR2
Gaia DR2 6683371847364921088
Gaia DR3
Gaia DR3 6683371847364921088
System
TOI-1064
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 6.44 Earth days (1.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0615 AU.
Transit Fingerprint
Depth
0.107 %
Duration
1.980 h
Impact parameter b
0.728
Rp / R★
0.032670
Transit midpoint (BJD)
2,459,036.8534
Photometric dip
Transit produces a flux drop of 1,067 ppm lasting ≈ 1.98 h.
Extended Orbital Architecture
Planet / star radius ratio
0.032670
Impact parameter (b)
0.728
RV semi-amplitude (K)
5.620 m/s
Transit mid-time (BJD)
2,459,036.8534
Long. of periastron (ω)
120.00°
Angular separation (arcsec)
0.90400
Eq. Temperature
784K
(511 °C)
Insolation (S⊕)
62.90
Earth = 1.00
Earth Similarity (ESI)
0.342
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.
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
Wilson et al. 2022Instrument
TESS CCD Array
Publication
2022-01
Observation locale
Space
Discovery cohort
Planets confirmed in 2022 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-1064
Spectral Class
K-type orange
Effective Temperature
4,734 K — cooler than the Sun (5,778 K)
Estimated Age
9.40 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.726 R☉
Stellar Mass
0.748 M☉
Metallicity [Fe/H]
0.05
Extended Stellar Properties
Surface gravity (log g)
4.600 dex
Stellar density
2.707 g/cm³
Rotational v·sin i
2.70 km/s
Activity index (log R'HK)
-4.633
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
14.662 mas
Total Proper Motion
100.950 mas/yr
PM Right Ascension
-3.46 mas/yr
PM Declination
-100.89 mas/yr
Galactic Cartesian (pc)
x = 0.296 · y = -0.606 · z = -0.738
Equatorial (J2000)
RA 296.00393° · Dec -47.56203°
Galactic ℓ, b
351.165° · -28.235°
Ecliptic λ, β
289.187° · -25.840°
HTM-20 index
1208440757
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