Confirmed Exoplanet Discovered 2004

DH Tau b

A gas giant orbiting the m-type red dwarf DH Tau, located approximately 439.8 light-years from Earth.

Key parameters at a glance

  • A radius of 30.26 Earth radii
  • A mass of 3,496.00 Earth masses
  • Surface gravity around 3.82 g
  • Semi-major axis 330.0000 AU
  • Equilibrium temperature 2,200 K (1927 °C)
  • Distance from Earth 439.81 light-years
  • Earth Similarity Index 0.043
  • Travel time at Voyager 1 speed 7,756,019 years

DH Tau b Planet Profile

Physical Specs

Radius
30.26 R⊕
Radius (Jupiter)
2.700 R♃
Mass
3,496.00 M⊕
Mass (Jupiter)
11.000 M♃
Density
0.69 g/cm³
Surface Gravity
3.82 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.043
HZ Position Unknown
Controversial No

Discovery

Year 2004
Method Imaging
Facility Subaru Telescope
Telescope 8.2 m Subaru Telescope

Size rank in cohort

Rank by radius

#4of 1771

top 0.2%

This planet

30.26R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Kepler-1979 b 29.33 R⊕ Kepler-297 d 32.60 R⊕ GQ Lup b 33.60 R⊕
Metric Earth DH Tau b Jupiter
Radius (R⊕)1.0030.2611.21
Mass (M⊕)1.003,496.00317.83
Density (g/cm³)5.510.691.33
Surface Gravity (g)1.003.822.53
Insolation (S⊕)1.00—0.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 3,496.000 M⊕ Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 268148971

Gaia DR2

Gaia DR2 151374202498079872

Gaia DR3

Gaia DR3 151374202498079872

System

DH Tau

Percentile among Gas Giant cohort

Radius 30.264 R⊕ · percentile 100 / cohort 1771
Mass 3,496.000 M⊕ · percentile 89 / cohort 1747
Distance 134.85 pc · percentile 41 / cohort 1759
ESI 0.043 · percentile 2 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
— days
Semi-major axis
330.0000 AU
Eccentricity
—
Inclination
— °

Year Length

Orbital period for this planet has not yet been measured.

Eq. Temperature

2,200K

(1927 °C)

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.043

0 = alien, 1 = Earth-identical

Insufficient insolation data — the dayside is scorched.

Discovery Paper

Primary reference

Itoh et al. 2005

Instrument

CIAO Camera

Publication

2005-02

Observation locale

Ground

Host System: DH Tau

Spectral Class

M-type red dwarf

Effective Temperature

4,371 K — cooler than the Sun (5,778 K)

Estimated Age

0.00 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.270 R☉

Stellar Mass

0.330 M☉

Metallicity [Fe/H]

—

Distance
134.85 parsec
Light-years 439.81 ly
V-band magnitude
13.98 mag
Voyager-speed travel 7,756,019 yr

Multi-band Host Photometry — 16 bands

3.015.615.64U15.54B13.98V12.50Gaia11.46TESS15.25Sloan g15.07Sloan r15.01Sloan i12.63Sloan z9.77J8.82H8.18K7.40W17.02W25.76W33.03W4

Astrometric Data

Parallax

7.388 mas

Total Proper Motion

21.872 mas/yr

PM Right Ascension

7.07 mas/yr

PM Declination

-20.70 mas/yr

Galactic Cartesian (pc)

x = 0.343 · y = 0.826 · z = 0.447

Equatorial (J2000)

RA 67.42317° · Dec 26.54939°

Galactic ℓ, b

171.900° · -14.939°

Ecliptic λ, β

69.840° · 4.676°

HTM-20 index

-108664904

Similar Worlds

CFHTWIR-Oph 98 b

Gas Giant · M-type red dwarf

Radius 20.85 R⊕ · —

CD-35 2722 b

Gas Giant · M-type red dwarf

Radius 17.37 R⊕ · 73.0 ly

2MASS J02192210-3925225 b

Gas Giant · M-type red dwarf

Radius 16.14 R⊕ · 130.8 ly

2MASS J12073346-3932539 b

Gas Giant · M-type red dwarf

Radius 15.69 R⊕ · 209.7 ly

NGTS-1 b

Gas Giant · M-type red dwarf

Radius 14.91 R⊕ · 711.4 ly

GJ 3512 b

Gas Giant · M-type red dwarf

Radius 14.30 R⊕ · 30.9 ly

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