Key parameters at a glance

A radius of 13.50 Earth radii
A mass of 530.78 Earth masses
Surface gravity around 2.91 g
An orbital period of 386.300 days
Semi-major axis 1.0600 AU
Distance from Earth 115.89 light-years
Earth Similarity Index 0.351
Travel time at Voyager 1 speed 2,043,704 years

HD 142415 b Planet Profile

Physical Specs

Radius

13.50 R⊕

Radius (Jupiter)

1.200 R♃

Mass

530.78 M⊕

Mass (Jupiter)

1.670 M♃

Density

1.19 g/cm³

Surface Gravity

2.91 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.351

HZ Position Unknown

Controversial No

Discovery

Year 2003

Method Radial Velocity

Facility La Silla Observatory

Telescope 1.2 m Leonhard Euler Telescope

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	HD 142415 b	Jupiter
Radius (R⊕)	1.00	13.50	11.21
Mass (M⊕)	1.00	530.78	317.83
Density (g/cm³)	5.51	1.19	1.33
Surface Gravity (g)	1.00	2.91	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	530.776 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 142415

HIP

HIP 78169

TIC

TIC 342041655

Gaia DR2

Gaia DR2 5833117718964892928

Gaia DR3

Gaia DR3 5833117718964892928

System

HD 142415

Percentile among Gas Giant cohort

Radius 13.500 R⊕ · percentile 59 / cohort 1771

Mass 530.776 M⊕ · percentile 50 / cohort 1747

Orbital period 386.30 d · percentile 64 / cohort 1533

Distance 35.53 pc · percentile 11 / cohort 1759

ESI 0.351 · percentile 71 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

386.300 days

Semi-major axis

1.0600 AU

Eccentricity

0.500

Inclination

— °

Year Length

A year here lasts about 1.06 Earth years on a highly eccentric trajectory at a mean orbital distance of 1.0600 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.351

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Mayor et al. 2004

Instrument

CORALIE Spectrograph

Publication

2004-02

Observation locale

Ground

Discovery cohort

Planets confirmed in 2003 at La Silla Observatory (11 shown).

HD 169830 c · Gas Giant HD 111232 b · Gas Giant HD 82943 c · Gas Giant HD 82943 b · Gas Giant HD 121504 b · Gas Giant HD 114386 b · Gas Giant HD 19994 b · Gas Giant HD 65216 b · Gas Giant HD 41004 B b · Gas Giant HD 216770 b · Gas Giant HD 6434 b · Gas Giant

Host System: HD 142415

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,940 K — hotter than the Sun (5,778 K)

Estimated Age

1.10 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.040 R☉

Stellar Mass

1.070 M☉

Metallicity [Fe/H]

0.13

Extended Stellar Properties

Surface gravity (log g)

4.440 dex

Stellar density

1.305 g/cm³

Systemic radial velocity

-12.00 km/s

Rotational v·sin i

3.30 km/s

Activity index (log R'HK)

-4.660

Metallicity ratio

[Fe/H]

Distance

35.53 parsec

Light-years 115.89 ly

V-band magnitude

7.33 mag

Voyager-speed travel 2,043,704 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

28.115 mas

Total Proper Motion

151.969 mas/yr

PM Right Ascension

-112.80 mas/yr

PM Declination

-101.84 mas/yr

Galactic Cartesian (pc)

x = -0.253 · y = -0.428 · z = -0.868

Equatorial (J2000)

RA 239.41899° · Dec -60.20069°

Galactic ℓ, b

324.177° · -5.254°

Ecliptic λ, β

251.078° · -38.754°

HTM-20 index

-624362746

Observation Record

Photometric series

RV measurements

Archive notes