Key parameters at a glance
- A radius of 13.80 Earth radii
- A mass of 297.00 Earth masses
- Surface gravity around 1.56 g
- An orbital period of 393.100 days
- Semi-major axis 0.1000 AU
- Distance from Earth 406.65 light-years
- Earth Similarity Index 0.304
- Travel time at Voyager 1 speed 7,171,295 years
1 sibling around TOI-1694
TOI-1694 c 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-1694 b | Neptune-like | 5.34 | 31.30 | 3.770 | 943 | 2023 |
| TOI-1694 c this | Gas Giant | 13.80 | 297.00 | 393.100 | — | 2023 |
TOI-1694 c Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#510of 1771
top 28.7%
This planet
13.80R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-1694 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.80 | 11.21 |
| Mass (M⊕) | 1.00 | 297.00 | 317.83 |
| Density (g/cm³) | 5.51 | 0.62 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.56 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Minimum mass (M sin i) | 297.000 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
TIC
TIC 396740648
Gaia DR2
Gaia DR2 1104269596843209472
Gaia DR3
Gaia DR3 1104269596843209472
System
TOI-1694
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts about 1.08 Earth years on a nearly circular orbit at a mean orbital distance of 0.1000 AU.
Extended Orbital Architecture
RV semi-amplitude (K)
28.840 m/s
Transit mid-time (BJD)
4,932,072.5000
Long. of periastron (ω)
90.00°
Angular separation (arcsec)
0.80200
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.304
0 = alien, 1 = Earth-identical
Discovery Paper
Primary reference
Van Zandt et al. 2023Instrument
HIRES Spectrometer
Publication
2023-02
Observation locale
Ground
Discovery cohort
Planets confirmed in 2023 at W. M. Keck Observatory (5 shown).
Host System: TOI-1694
Spectral Class
K-type orange
Effective Temperature
5,058 K — cooler than the Sun (5,778 K)
Estimated Age
4.30 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.804 R☉
Stellar Mass
0.853 M☉
Metallicity [Fe/H]
0.13
Extended Stellar Properties
Surface gravity (log g)
4.558 dex
Stellar density
2.301 g/cm³
Rotational v·sin i
1.20 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
7.992 mas
Total Proper Motion
50.774 mas/yr
PM Right Ascension
46.51 mas/yr
PM Declination
-20.36 mas/yr
Galactic Cartesian (pc)
x = -0.054 · y = 0.397 · z = 0.916
Equatorial (J2000)
RA 97.74871° · Dec 66.36060°
Galactic ℓ, b
148.585° · 22.702°
Ecliptic λ, β
94.238° · 43.035°
HTM-20 index
-1848056411
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