Confirmed Exoplanet Discovered 2020

TYC 8998-760-1 c

A gas giant orbiting the k-type orange TYC 8998-760-1, located approximately 308.6 light-years from Earth.

Key parameters at a glance

  • A radius of 12.33 Earth radii
  • A mass of 1,906.98 Earth masses
  • Surface gravity around 12.54 g
  • Semi-major axis 320.0000 AU
  • Equilibrium temperature 1,240 K (967 °C)
  • Distance from Earth 308.60 light-years
  • Earth Similarity Index 0.140
  • Travel time at Voyager 1 speed 5,442,184 years

1 sibling around TYC 8998-760-1

TYC 8998-760-1 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
TYC 8998-760-1 c this Gas Giant 12.33 1,906.98 — 1,240 2020
TYC 8998-760-1 b Gas Giant 12.30 4,449.62 — — 2020

TYC 8998-760-1 c Planet Profile

Physical Specs

Radius
12.33 R⊕
Radius (Jupiter)
1.100 R♃
Mass
1,906.98 M⊕
Mass (Jupiter)
6.000 M♃
Density
5.59 g/cm³
Surface Gravity
12.54 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.140
HZ Position Unknown
Controversial No

Discovery

Year 2020
Method Imaging
Facility Paranal Observatory
Telescope 8.2 m ESO VLT UT3 Melipal Telescope

Size rank in cohort

Rank by radius

#1341of 1771

top 75.7%

This planet

12.33R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Kepler-730 b 12.33 R⊕ WASP-44 b 12.33 R⊕ WASP-41 b 12.33 R⊕
Metric Earth TYC 8998-760-1 c Jupiter
Radius (R⊕)1.0012.3311.21
Mass (M⊕)1.001,906.98317.83
Density (g/cm³)5.515.591.33
Surface Gravity (g)1.0012.542.53
Insolation (S⊕)1.00—0.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 1,906.980 M⊕ Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 449888653

Gaia DR2

Gaia DR2 5864061893213196032

Gaia DR3

Gaia DR3 5864061893213196032

System

TYC 8998-760-1

Percentile among Gas Giant cohort

Radius 12.330 R⊕ · percentile 24 / cohort 1771
Mass 1,906.980 M⊕ · percentile 79 / cohort 1747
Distance 94.62 pc · percentile 34 / cohort 1759
ESI 0.140 · percentile 35 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
— days
Semi-major axis
320.0000 AU
Eccentricity
—
Inclination
— °

Year Length

Orbital period for this planet has not yet been measured.

Eq. Temperature

1,240K

(967 °C)

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.140

0 = alien, 1 = Earth-identical

Insufficient insolation data — the dayside is scorched.

Discovery Paper

Primary reference

Bohn et al. 2020

Instrument

SPHERE

Publication

2020-07

Observation locale

Ground

Host System: TYC 8998-760-1

Spectral Class

K-type orange

Effective Temperature

4,573 K — cooler than the Sun (5,778 K)

Estimated Age

0.02 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.954 R☉

Stellar Mass

1.000 M☉

Metallicity [Fe/H]

—

Extended Stellar Properties

Surface gravity (log g)

4.291 dex

Stellar density

0.986 g/cm³

Systemic radial velocity

12.84 km/s

Distance
94.62 parsec
Light-years 308.60 ly
V-band magnitude
11.12 mag
Voyager-speed travel 5,442,184 yr

Multi-band Host Photometry — 11 bands

8.012.011.96B11.12V10.65Gaia10.01TESS9.07J8.56H8.39K8.28W18.31W28.16W38.03W4

Astrometric Data

Parallax

10.540 mas

Total Proper Motion

44.599 mas/yr

PM Right Ascension

-40.90 mas/yr

PM Declination

-17.79 mas/yr

Galactic Cartesian (pc)

x = -0.395 · y = -0.154 · z = -0.906

Equatorial (J2000)

RA 201.30011° · Dec -64.93916°

Galactic ℓ, b

306.499° · -2.302°

Ecliptic λ, β

231.796° · -50.345°

HTM-20 index

1667464533

Similar Worlds

TOI-2969 b

Gas Giant · K-type orange

Radius 12.33 R⊕ · 534.9 ly

HD 63454 b

Gas Giant · K-type orange

Radius 12.31 R⊕ · 122.9 ly

SR 12 AB c

Gas Giant · K-type orange

Radius 12.30 R⊕ · 366.3 ly

2MASS J22362452+4751425 b

Gas Giant · K-type orange

Radius 12.30 R⊕ · 226.9 ly

HD 158996 b

Gas Giant · K-type orange

Radius 12.30 R⊕ · 925.2 ly

11 UMi b

Gas Giant · K-type orange

Radius 12.30 R⊕ · 408.7 ly

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