Confirmed Exoplanet Discovered 2024

TOI-2295 b

A gas giant orbiting the g-type yellow (sun-like) TOI-2295, located approximately 411.9 light-years from Earth.

Key parameters at a glance

  • A radius of 16.48 Earth radii
  • A mass of 278.10 Earth masses
  • Surface gravity around 1.02 g
  • An orbital period of 30.033 days
  • Semi-major axis 0.1992 AU
  • Equilibrium temperature 747 K (474 °C)
  • Distance from Earth 411.87 light-years
  • Earth Similarity Index 0.155
  • Travel time at Voyager 1 speed 7,263,266 years

1 sibling around TOI-2295

TOI-2295 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-2295 b this Gas Giant 16.48 278.10 30.033 747 2024
TOI-2295 c Gas Giant 12.80 1,783.02 966.500 235 2024

TOI-2295 b Planet Profile

Physical Specs

Radius
16.48 R⊕
Radius (Jupiter)
1.470 R♃
Mass
278.10 M⊕
Mass (Jupiter)
0.875 M♃
Density
0.34 g/cm³
Surface Gravity
1.02 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.155
HZ Position Inner
Controversial No

Discovery

Year 2024
Method Transit
Facility Transiting Exoplanet Survey Satellite (TESS)
Telescope 0.1 m TESS Telescope

Size rank in cohort

Rank by radius

#133of 1771

top 7.5%

This planet

16.48R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

GPX-1 b 16.48 R⊕ WASP-183 b 16.48 R⊕ TOI-3023 b 16.43 R⊕
Metric Earth TOI-2295 b Jupiter
Radius (R⊕)1.0016.4811.21
Mass (M⊕)1.00278.10317.83
Density (g/cm³)5.510.341.33
Surface Gravity (g)1.001.022.53
Insolation (S⊕)1.0042.090.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 278.100 M⊕ Direct mass measurement (not derived).
Minimum mass (M sin i) 278.100 M⊕ Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

TIC

TIC 48018596

Gaia DR2

Gaia DR2 2144184945615891712

Gaia DR3

Gaia DR3 2144184945615891712

System

TOI-2295

Percentile among Gas Giant cohort

Radius 16.477 R⊕ · percentile 92 / cohort 1771
Mass 278.100 M⊕ · percentile 30 / cohort 1747
Orbital period 30.03 d · percentile 49 / cohort 1533
Distance 126.28 pc · percentile 40 / cohort 1759
ESI 0.155 · percentile 37 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
30.033 days
Semi-major axis
0.1992 AU
Eccentricity
0.334
Inclination
88.16 °

Year Length

A year here lasts approximately 30.03 Earth days (8.2% of a terrestrial year) on a highly eccentric trajectory at a mean orbital distance of 0.1992 AU.

Transit Fingerprint

Depth

1.070 %

Duration

3.010 h

Impact parameter b

1.056

Rp / R★

0.104000

Transit midpoint (BJD)

2,458,713.4551

Photometric dip

Transit produces a flux drop of 10,700 ppm lasting ≈ 3.01 h.

Extended Orbital Architecture

Planet / star radius ratio

0.104000

Impact parameter (b)

1.056

RV semi-amplitude (K)

54.700 m/s

Transit mid-time (BJD)

2,458,713.4551

Long. of periastron (ω)

-39.20°

Angular separation (arcsec)

1.58000

Eq. Temperature

747K

(474 °C)

Insolation (S⊕)

42.09

Earth = 1.00

Earth Similarity (ESI)

0.155

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.

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

Heidari et al. 2024

Instrument

TESS CCD Array

Publication

2025-02

Observation locale

Space

Discovery cohort

Planets confirmed in 2024 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).

Gliese 12 b · Rocky Terrestrial TOI-6002 b · Super-Earth TOI-5713 b · Super-Earth TOI-4336 A b · Sub-Neptune TOI-406.01 · Sub-Neptune TOI-1224 c · Sub-Neptune LHS 1678 d · Rocky Terrestrial TOI-2088 b · Sub-Neptune TOI-2120 b · Sub-Neptune TOI-1806.01 · Sub-Neptune TOI-4633 c · Sub-Neptune TOI-260 b · Super-Earth

Host System: TOI-2295

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,730 K — cooler than the Sun (5,778 K)

Estimated Age

10.50 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.459 R☉

Stellar Mass

1.168 M☉

Metallicity [Fe/H]

0.32

Extended Stellar Properties

Surface gravity (log g)

4.176 dex

Stellar density

0.528 g/cm³

Rotational v·sin i

3.90 km/s

Rotation period

78.00 days

Activity index (log R'HK)

-5.500

Metallicity ratio

[Fe/H]

Distance
126.28 parsec
Light-years 411.87 ly
V-band magnitude
9.60 mag
Voyager-speed travel 7,263,266 yr

Multi-band Host Photometry — 11 bands

8.010.410.36B9.60V9.46Gaia9.01TESS8.38J8.11H8.11K7.98W18.05W28.03W37.98W4

Astrometric Data

Parallax

7.890 mas

Total Proper Motion

67.411 mas/yr

PM Right Ascension

-61.84 mas/yr

PM Declination

26.83 mas/yr

Galactic Cartesian (pc)

x = 0.128 · y = -0.623 · z = 0.772

Equatorial (J2000)

RA 281.57620° · Dec 50.49247°

Galactic ℓ, b

79.853° · 21.376°

Ecliptic λ, β

295.726° · 72.898°

HTM-20 index

-1110671238

Similar Worlds

WASP-183 b

Gas Giant · G-type yellow (Sun-like)

Radius 16.48 R⊕ · 1,061.2 ly

TOI-3023 b

Gas Giant · G-type yellow (Sun-like)

Radius 16.43 R⊕ · 1,271.7 ly

CoRoT-2 b

Gas Giant · G-type yellow (Sun-like)

Radius 16.43 R⊕ · 695.6 ly

CoRoT-31 b

Gas Giant · G-type yellow (Sun-like)

Radius 16.37 R⊕ · 6,541.9 ly

NGTS-3 A b

Gas Giant · G-type yellow (Sun-like)

Radius 16.59 R⊕ · 2,426.5 ly

TOI-5322 b

Gas Giant · G-type yellow (Sun-like)

Radius 16.61 R⊕ · 1,555.4 ly

Explore Related Categories

Gas Giant Planets Transit Discoveries Transiting Exoplanet Survey Satellite (TESS) Mission G-type yellow (Sun-like) Hosts