Key parameters at a glance

A radius of 12.30 Earth radii
A mass of 4,449.62 Earth masses
Surface gravity around 29.41 g
Semi-major axis 162.0000 AU
Distance from Earth 308.60 light-years
Earth Similarity Index 0.338
Travel time at Voyager 1 speed 5,442,184 years

1 sibling around TYC 8998-760-1

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

TYC 8998-760-1 b Planet Profile

Physical Specs

Radius

12.30 R⊕

Radius (Jupiter)

1.100 R♃

Mass

4,449.62 M⊕

Mass (Jupiter)

14.000 M♃

Density

13.10 g/cm³

Surface Gravity

29.41 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.338

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

#1349of 1771

top 76.1%

This planet

12.30R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HAT-P-13 c 12.30 R⊕ HD 22781 b 12.30 R⊕ CHXR 73 b 12.30 R⊕

Metric	Earth	TYC 8998-760-1 b	Jupiter
Radius (R⊕)	1.00	12.30	11.21
Mass (M⊕)	1.00	4,449.62	317.83
Density (g/cm³)	5.51	13.10	1.33
Surface Gravity (g)	1.00	29.41	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	4,449.620 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 12.300 R⊕ · percentile 22 / cohort 1771

Mass 4,449.620 M⊕ · percentile 93 / cohort 1747

Distance 94.62 pc · percentile 34 / cohort 1759

ESI 0.338 · percentile 67 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

— days

Semi-major axis

162.0000 AU

Eccentricity

—

Inclination

— °

Year Length

Orbital period for this planet has not yet been measured.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.338

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Bohn et al. 2020

Instrument

SPHERE

Publication

2020-02

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

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

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

HD 22781 b

Gas Giant · K-type orange

Radius 12.30 R⊕ · 106.3 ly

HD 4760 b

Gas Giant · K-type orange

Radius 12.30 R⊕ · 1,754.3 ly

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