Key parameters at a glance

A radius of 13.50 Earth radii
A mass of 527.60 Earth masses
Surface gravity around 2.89 g
An orbital period of 10.790 days
Semi-major axis 0.0968 AU
Distance from Earth 395.96 light-years
Earth Similarity Index 0.350
Travel time at Voyager 1 speed 6,982,753 years
Almost certainly tidally locked to its host star given the close orbit

TAP 26 b Planet Profile

Physical Specs

Radius

13.50 R⊕

Radius (Jupiter)

1.200 R♃

Mass

527.60 M⊕

Mass (Jupiter)

1.660 M♃

Density

1.18 g/cm³

Surface Gravity

2.89 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.350

HZ Position Unknown

Controversial No

Discovery

Year 2017

Method Radial Velocity

Facility Multiple Facilities

Telescope Multiple Telescopes

Size rank in cohort

Rank by radius

#671of 1771

top 37.8%

This planet

13.50R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 45350 b 13.50 R⊕ HD 82943 b 13.50 R⊕ HD 27442 b 13.50 R⊕

Metric	Earth	TAP 26 b	Jupiter
Radius (R⊕)	1.00	13.50	11.21
Mass (M⊕)	1.00	527.60	317.83
Density (g/cm³)	5.51	1.18	1.33
Surface Gravity (g)	1.00	2.89	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	527.598 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

TIC

TIC 435907158

Gaia DR2

Gaia DR2 47316005432912256

Gaia DR3

Gaia DR3 47316005432912256

System

TAP 26

Percentile among Gas Giant cohort

Radius 13.500 R⊕ · percentile 59 / cohort 1771

Mass 527.598 M⊕ · percentile 50 / cohort 1747

Orbital period 10.79 d · percentile 45 / cohort 1533

Distance 121.40 pc · percentile 39 / cohort 1759

ESI 0.350 · percentile 71 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

10.790 days

Semi-major axis

0.0968 AU

Eccentricity

—

Inclination

— °

Year Length

A year here lasts approximately 10.79 Earth days (3.0% of a terrestrial year) at a mean orbital distance of 0.0968 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.350

0 = alien, 1 = Earth-identical

Insufficient insolation data. Close-orbiting tidally-locked around a cool host.

Discovery Paper

Primary reference

Yu et al. 2017

Instrument

Multiple Instruments

Publication

2017-05

Observation locale

Ground

Discovery cohort

Planets confirmed in 2017 at Multiple Facilities (4 shown).

PSR B0329+54 b · Rocky Terrestrial WASP-53 b · Gas Giant WASP-81 b · Gas Giant WASP-53 c · Unclassified

Host System: TAP 26

Spectral Class

K-type orange

Effective Temperature

4,620 K — cooler than the Sun (5,778 K)

Estimated Age

0.02 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.170 R☉

Stellar Mass

1.040 M☉

Metallicity [Fe/H]

-0.20

Extended Stellar Properties

Surface gravity (log g)

4.500 dex

Stellar density

1.267 g/cm³

Systemic radial velocity

20.97 km/s

Rotational v·sin i

68.20 km/s

Rotation period

0.71 days

Metallicity ratio

[M/H]

Distance

121.40 parsec

Light-years 395.96 ly

V-band magnitude

12.50 mag

Voyager-speed travel 6,982,753 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

8.208 mas

Total Proper Motion

13.422 mas/yr

PM Right Ascension

3.09 mas/yr

PM Declination

-13.06 mas/yr

Galactic Cartesian (pc)

x = 0.408 · y = 0.863 · z = 0.299

Equatorial (J2000)

RA 64.71545° · Dec 17.38788°

Galactic ℓ, b

177.463° · -22.849°

Ecliptic λ, β

65.881° · -3.960°

HTM-20 index

-2130254349

Similar Worlds

Kepler-46 c

Gas Giant · K-type orange

Radius 13.50 R⊕ · 2,534.4 ly

HD 222076 b

Gas Giant · K-type orange

Radius 13.50 R⊕ · 297.3 ly

HD 128311 b

Gas Giant · K-type orange

Radius 13.50 R⊕ · 53.3 ly

BD+48 740 b

Gas Giant · K-type orange

Radius 13.50 R⊕ · 2,174.1 ly

HD 81688 b

Gas Giant · K-type orange

Radius 13.50 R⊕ · 279.6 ly

HD 47366 c

Gas Giant · K-type orange

Radius 13.50 R⊕ · 275.1 ly

Explore Related Categories

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