Key parameters at a glance
- A radius of 12.85 Earth radii
- A mass of 117.60 Earth masses
- Surface gravity around 0.71 g
- An orbital period of 3.551 days
- Semi-major axis 0.0475 AU
- Equilibrium temperature 1,471 K (1198 °C)
- Distance from Earth 1,503.56 light-years
- Earth Similarity Index 0.077
- Travel time at Voyager 1 speed 26,515,329 years
TOI-2842 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1055of 1771
top 59.5%
This planet
12.85R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-2842 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 12.85 | 11.21 |
| Mass (M⊕) | 1.00 | 117.60 | 317.83 |
| Density (g/cm³) | 5.51 | 0.30 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.71 | 2.53 |
| Insolation (S⊕) | 1.00 | 781.80 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 117.597 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 178162579
Gaia DR2
Gaia DR2 3046327742219111808
Gaia DR3
Gaia DR3 3046327742219111808
System
TOI-2842
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.55 Earth days (1.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0475 AU.
Transit Fingerprint
Depth
0.867 %
Duration
2.575 h
Impact parameter b
0.785
Transit midpoint (BJD)
2,459,172.1791
Photometric dip
Transit produces a flux drop of 8,670 ppm lasting ≈ 2.58 h.
Extended Orbital Architecture
Semi-major axis / stellar radius
8.070
Impact parameter (b)
0.785
RV semi-amplitude (K)
45.200 m/s
Transit mid-time (BJD)
2,459,172.1791
Angular separation (arcsec)
0.10300
Eq. Temperature
1,471K
(1198 °C)
Insolation (S⊕)
781.80
Earth = 1.00
Earth Similarity (ESI)
0.077
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
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
Yee et al. 2023Instrument
TESS CCD Array
Publication
2023-03
Observation locale
Space
Discovery cohort
Planets confirmed in 2023 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-2842
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,910 K — hotter than the Sun (5,778 K)
Estimated Age
4.70 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.265 R☉
Stellar Mass
1.135 M☉
Metallicity [Fe/H]
0.23
Extended Stellar Properties
Surface gravity (log g)
4.288 dex
Stellar density
0.789 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
2.141 mas
Total Proper Motion
5.182 mas/yr
PM Right Ascension
3.14 mas/yr
PM Declination
4.12 mas/yr
Galactic Cartesian (pc)
x = -0.304 · y = 0.934 · z = -0.185
Equatorial (J2000)
RA 108.04421° · Dec -10.63934°
Galactic ℓ, b
224.751° · -0.295°
Ecliptic λ, β
111.219° · -32.759°
HTM-20 index
196239542
Similar Worlds
WASP-47 b
Gas Giant · G-type yellow (Sun-like)
Radius 12.86 R⊕ · 863.6 ly
WASP-98 b
Gas Giant · G-type yellow (Sun-like)
Radius 12.82 R⊕ · 918.9 ly
TOI-4914 b
Gas Giant · G-type yellow (Sun-like)
Radius 12.87 R⊕ · 978.1 ly
Kepler-422 b
Gas Giant · G-type yellow (Sun-like)
Radius 12.89 R⊕ · 2,357.4 ly
NGTS-13 b
Gas Giant · G-type yellow (Sun-like)
Radius 12.80 R⊕ · 2,112.2 ly
TOI-3682 b
Gas Giant · G-type yellow (Sun-like)
Radius 12.80 R⊕ · 1,318.4 ly