Key parameters at a glance

A radius of 12.70 Earth radii
A mass of 1,938.76 Earth masses
Surface gravity around 12.02 g
An orbital period of 193.200 days
Semi-major axis 0.6600 AU
Distance from Earth 2,000.71 light-years
Earth Similarity Index 0.441
Travel time at Voyager 1 speed 35,282,566 years

TYC 0434-04538-1 b Planet Profile

Physical Specs

Radius

12.70 R⊕

Radius (Jupiter)

1.140 R♃

Mass

1,938.76 M⊕

Mass (Jupiter)

6.100 M♃

Density

5.20 g/cm³

Surface Gravity

12.02 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.441

HZ Position Unknown

Controversial No

Discovery

Year 2021

Method Radial Velocity

Facility Multiple Observatories

Telescope Multiple Telescopes

Size rank in cohort

Rank by radius

#1130of 1771

top 63.7%

This planet

12.70R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 168863 b 12.70 R⊕ HD 233604 b 12.70 R⊕ Kepler-424 c 12.70 R⊕

Metric	Earth	TYC 0434-04538-1 b	Jupiter
Radius (R⊕)	1.00	12.70	11.21
Mass (M⊕)	1.00	1,938.76	317.83
Density (g/cm³)	5.51	5.20	1.33
Surface Gravity (g)	1.00	12.02	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	1,938.763 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

TIC

TIC 398118692

Gaia DR2

Gaia DR2 4468259369457276672

Gaia DR3

Gaia DR3 4468259369457276672

System

TYC 0434-04538-1

Percentile among Gas Giant cohort

Radius 12.700 R⊕ · percentile 34 / cohort 1771

Mass 1,938.763 M⊕ · percentile 79 / cohort 1747

Orbital period 193.20 d · percentile 57 / cohort 1533

Distance 613.42 pc · percentile 79 / cohort 1759

ESI 0.441 · percentile 98 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

193.200 days

Semi-major axis

0.6600 AU

Eccentricity

0.080

Inclination

— °

Year Length

A year here lasts approximately 193.20 Earth days (52.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.6600 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.441

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Niedzielski et al. 2021

Instrument

Multiple Instruments

Publication

2021-04

Observation locale

Ground

Discovery cohort

Planets confirmed in 2021 at Multiple Observatories (12 shown).

L 98-59 e · Super-Earth GJ 393 b · Rocky Terrestrial HD 168009 b · Sub-Neptune HD 164922 e · Sub-Neptune HD 95735 c · Sub-Neptune HD 141004 b · Sub-Neptune HD 107148 c · Neptune-like TOI-178 f · Sub-Neptune HIP 56640 b · Gas Giant HD 137496 c · Gas Giant HD 156668 c · Neptune-like HD 145675 c · Gas Giant

Host System: TYC 0434-04538-1

Spectral Class

K-type orange

Effective Temperature

4,679 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

9.990 R☉

Stellar Mass

1.040 M☉

Metallicity [Fe/H]

-0.38

Extended Stellar Properties

Surface gravity (log g)

2.490 dex

Systemic radial velocity

-52.88 km/s

Rotational v·sin i

3.00 km/s

Rotation period

169.00 days

Metallicity ratio

[Fe/H]

Distance

613.42 parsec

Light-years 2,000.71 ly

V-band magnitude

10.25 mag

Voyager-speed travel 35,282,566 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

1.605 mas

Total Proper Motion

48.173 mas/yr

PM Right Ascension

-40.26 mas/yr

PM Declination

-26.45 mas/yr

Galactic Cartesian (pc)

x = 0.023 · y = -0.999 · z = 0.036

Equatorial (J2000)

RA 271.33965° · Dec 2.06228°

Galactic ℓ, b

29.485° · 11.188°

Ecliptic λ, β

271.479° · 25.495°

HTM-20 index

-717375814

Similar Worlds

HD 168863 b

Gas Giant · K-type orange

Radius 12.70 R⊕ · 130.1 ly

HD 27894 d

Gas Giant · K-type orange

Radius 12.70 R⊕ · 142.9 ly

HIP 56640 b

Gas Giant · K-type orange

Radius 12.70 R⊕ · 399.0 ly

eps CrB b

Gas Giant · K-type orange

Radius 12.70 R⊕ · 227.9 ly

HIP 67851 c

Gas Giant · K-type orange

Radius 12.70 R⊕ · 209.1 ly

HD 113996 b

Gas Giant · K-type orange

Radius 12.70 R⊕ · 379.4 ly

Explore Related Categories

Gas Giant Planets Radial Velocity Discoveries Multiple Observatories Mission K-type orange Hosts