Key parameters at a glance

A radius of 22.19 Earth radii
A mass of 2,383.71 Earth masses
Surface gravity around 4.84 g
Semi-major axis 34.3000 AU
Equilibrium temperature 1,054 K (781 °C)
Distance from Earth 368.77 light-years
Earth Similarity Index 0.121
Travel time at Voyager 1 speed 6,503,171 years

1 sibling around PDS 70

PDS 70 c 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
PDS 70 b	Gas Giant	21.97	1,017.05	43,500.000	1,392	2018
PDS 70 c this	Gas Giant	22.19	2,383.71	—	1,054	2019

PDS 70 c Planet Profile

Physical Specs

Radius

22.19 R⊕

Radius (Jupiter)

1.980 R♃

Mass

2,383.71 M⊕

Mass (Jupiter)

7.500 M♃

Density

1.20 g/cm³

Surface Gravity

4.84 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.121

HZ Position Unknown

Controversial No

Discovery

Year 2019

Method Imaging

Facility European Southern Observatory

Telescope 8.2 m ESO VLT UT4 Yepun Telescope

Size rank in cohort

Rank by radius

#15of 1771

top 0.8%

This planet

22.19R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HAT-P-32 b 22.19 R⊕ Kepler-435 b 22.31 R⊕ WASP-12 b 22.03 R⊕

Metric	Earth	PDS 70 c	Jupiter
Radius (R⊕)	1.00	22.19	11.21
Mass (M⊕)	1.00	2,383.71	317.83
Density (g/cm³)	5.51	1.20	1.33
Surface Gravity (g)	1.00	4.84	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	2,383.713 M⊕	Direct mass measurement (not derived).
Minimum mass (M sin i)	2,542.640 M⊕	Lower bound from radial-velocity fitting.
Computed mass	3,333.874 M⊕	Model-computed mass (e.g. from mass-radius relation).

Star Catalogue Identifiers

TIC

TIC 179413040

Gaia DR2

Gaia DR2 6110141563309613056

Gaia DR3

Gaia DR3 6110141563309613056

System

PDS 70

Percentile among Gas Giant cohort

Radius 22.194 R⊕ · percentile 99 / cohort 1771

Mass 2,383.713 M⊕ · percentile 82 / cohort 1747

Distance 113.06 pc · percentile 37 / cohort 1759

ESI 0.121 · percentile 32 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

— days

Semi-major axis

34.3000 AU

Eccentricity

0.037

Inclination

130.50 °

Year Length

Orbital period for this planet has not yet been measured.

Eq. Temperature

1,054K

(781 °C)

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.121

0 = alien, 1 = Earth-identical

Insufficient insolation data — the dayside is scorched.

Discovery Paper

Primary reference

Haffert et al. 2019

Instrument

Multi Unit Spectroscopic Explorer (MUSE)

Publication

2019-06

Observation locale

Ground

Host System: PDS 70

Spectral Class

K-type orange

Effective Temperature

4,109 K — cooler than the Sun (5,778 K)

Estimated Age

0.01 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.260 R☉

Stellar Mass

0.982 M☉

Metallicity [Fe/H]

-0.11

Extended Stellar Properties

Surface gravity (log g)

4.230 dex

Stellar density

0.541 g/cm³

Systemic radial velocity

3.13 km/s

Rotational v·sin i

17.27 km/s

Metallicity ratio

[Fe/H]

Distance

113.06 parsec

Light-years 368.77 ly

V-band magnitude

12.03 mag

Voyager-speed travel 6,503,171 yr

Multi-band Host Photometry — 14 bands

Astrometric Data

Parallax

8.816 mas

Total Proper Motion

38.043 mas/yr

PM Right Ascension

-29.66 mas/yr

PM Declination

-23.82 mas/yr

Galactic Cartesian (pc)

x = -0.636 · y = -0.398 · z = -0.661

Equatorial (J2000)

RA 212.04214° · Dec -41.39804°

Galactic ℓ, b

318.062° · 19.208°

Ecliptic λ, β

224.648° · -26.642°

HTM-20 index

605469133

Similar Worlds

PDS 70 b

Gas Giant · K-type orange

Radius 21.97 R⊕ · 368.8 ly

HIP 65 A b

Gas Giant · K-type orange

Radius 22.75 R⊕ · 201.5 ly

GSC 06214-00210 b

Gas Giant · K-type orange

Radius 20.18 R⊕ · 353.9 ly

TOI-2669 b

Gas Giant · K-type orange

Radius 19.73 R⊕ · 1,283.2 ly

CT Cha b

Gas Giant · K-type orange

Radius 24.66 R⊕ · 622.0 ly

1RXS J160929.1-210524 b

Gas Giant · K-type orange

Radius 18.65 R⊕ · 453.8 ly

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