Key parameters at a glance

A radius of 12.50 Earth radii
A mass of 104.88 Earth masses
Surface gravity around 0.67 g
An orbital period of 691.900 days
Semi-major axis 1.2200 AU
Distance from Earth 50.47 light-years
Earth Similarity Index 0.263
Travel time at Voyager 1 speed 890,050 years

TYC 2187-512-1 b Planet Profile

Physical Specs

Radius

12.50 R⊕

Radius (Jupiter)

1.120 R♃

Mass

104.88 M⊕

Mass (Jupiter)

0.330 M♃

Density

0.30 g/cm³

Surface Gravity

0.67 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.263

HZ Position Unknown

Controversial No

Discovery

Year 2022

Method Radial Velocity

Facility Calar Alto Observatory

Telescope 3.5 m telescope

Size rank in cohort

Rank by radius

#1235of 1771

top 69.7%

This planet

12.50R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 156279 c 12.50 R⊕ HD 33283 b 12.50 R⊕ HD 156279 b 12.50 R⊕

Metric	Earth	TYC 2187-512-1 b	Jupiter
Radius (R⊕)	1.00	12.50	11.21
Mass (M⊕)	1.00	104.88	317.83
Density (g/cm³)	5.51	0.30	1.33
Surface Gravity (g)	1.00	0.67	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	104.883 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

TIC

TIC 283031851

Gaia DR2

Gaia DR2 1791995119082190848

Gaia DR3

Gaia DR3 1791995119082190848

System

TYC 2187-512-1

Percentile among Gas Giant cohort

Radius 12.500 R⊕ · percentile 28 / cohort 1771

Mass 104.883 M⊕ · percentile 6 / cohort 1747

Orbital period 691.90 d · percentile 72 / cohort 1533

Distance 15.47 pc · percentile 2 / cohort 1759

ESI 0.263 · percentile 48 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

691.900 days

Semi-major axis

1.2200 AU

Eccentricity

0.050

Inclination

— °

Year Length

A year here lasts about 1.89 Earth years on a nearly circular orbit at a mean orbital distance of 1.2200 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.263

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Quirrenbach et al. 2022

Instrument

CARMENES

Publication

2022-03

Observation locale

Ground

Host System: TYC 2187-512-1

Spectral Class

M-type red dwarf

Effective Temperature

3,734 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.495 R☉

Stellar Mass

0.498 M☉

Metallicity [Fe/H]

0.08

Extended Stellar Properties

Surface gravity (log g)

4.680 dex

Stellar density

5.629 g/cm³

Systemic radial velocity

5.35 km/s

Rotational v·sin i

2.00 km/s

Rotation period

40.00 days

Activity index (log R'HK)

-4.847

Metallicity ratio

[Fe/H]

Distance

15.47 parsec

Light-years 50.47 ly

V-band magnitude

10.58 mag

Voyager-speed travel 890,050 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

64.594 mas

Total Proper Motion

160.438 mas/yr

PM Right Ascension

108.84 mas/yr

PM Declination

117.87 mas/yr

Galactic Cartesian (pc)

x = 0.711 · y = -0.585 · z = 0.390

Equatorial (J2000)

RA 320.52668° · Dec 22.93194°

Galactic ℓ, b

72.546° · -18.857°

Ecliptic λ, β

331.734° · 36.184°

HTM-20 index

-976872940

Similar Worlds

ROXs 42 B b

Gas Giant · M-type red dwarf

Radius 12.50 R⊕ · 468.3 ly

HD 208527 b

Gas Giant · M-type red dwarf

Radius 12.50 R⊕ · 1,018.3 ly

Kepler-94 c

Gas Giant · M-type red dwarf

Radius 12.50 R⊕ · 625.9 ly

TOI-4666 b

Gas Giant · M-type red dwarf

Radius 12.53 R⊕ · 504.7 ly

COCONUTS-2 b

Gas Giant · M-type red dwarf

Radius 12.44 R⊕ · 35.5 ly

HIP 55507 b

Gas Giant · M-type red dwarf

Radius 12.60 R⊕ · 83.1 ly

Explore Related Categories

Gas Giant Planets Radial Velocity Discoveries Calar Alto Observatory Mission M-type red dwarf Hosts