Confirmed Exoplanet Discovered 2019

HD 92788 c

A gas giant orbiting the g-type yellow (sun-like) HD 92788, located approximately 113.0 light-years from Earth.

Key parameters at a glance

  • A radius of 13.00 Earth radii
  • A mass of 1,166.44 Earth masses
  • Surface gravity around 6.90 g
  • An orbital period of 11,611.298 days
  • Semi-major axis 10.5000 AU
  • Distance from Earth 113.03 light-years
  • Earth Similarity Index 0.412
  • Travel time at Voyager 1 speed 1,993,204 years

1 sibling around HD 92788

HD 92788 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
HD 92788 b Gas Giant 13.00 1,195.04 325.803 — 2000
HD 92788 c this Gas Giant 13.00 1,166.44 11,611.298 — 2019

HD 92788 c Planet Profile

Physical Specs

Radius
13.00 R⊕
Radius (Jupiter)
1.160 R♃
Mass
1,166.44 M⊕
Mass (Jupiter)
3.670 M♃
Density
2.92 g/cm³
Surface Gravity
6.90 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.412
HZ Position Unknown
Controversial No

Discovery

Year 2019
Method Radial Velocity
Facility La Silla Observatory
Telescope 1.2 m Leonhard Euler Telescope

Size rank in cohort

Rank by radius

#960of 1771

top 54.2%

This planet

13.00R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HIP 14810 b 13.00 R⊕ HD 47186 c 13.00 R⊕ WASP-107 c 13.00 R⊕
Metric Earth HD 92788 c Jupiter
Radius (R⊕)1.0013.0011.21
Mass (M⊕)1.001,166.44317.83
Density (g/cm³)5.512.921.33
Surface Gravity (g)1.006.902.53
Insolation (S⊕)1.00—0.037

Alternative Mass Estimates

Method Value Interpretation
Minimum mass (M sin i) 1,166.436 M⊕ Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD

HD 92788

HIP

HIP 52409

TIC

TIC 169248301

Gaia DR2

Gaia DR2 3802549437248150656

Gaia DR3

Gaia DR3 3802549437248150656

System

HD 92788

Percentile among Gas Giant cohort

Radius 13.000 R⊕ · percentile 43 / cohort 1771
Mass 1,166.436 M⊕ · percentile 70 / cohort 1747
Orbital period 11,611.30 d · percentile 96 / cohort 1533
Distance 34.65 pc · percentile 10 / cohort 1759
ESI 0.412 · percentile 89 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
11,611.298 days
Semi-major axis
10.5000 AU
Eccentricity
0.460
Inclination
— °

Year Length

A year here lasts about 31.79 Earth years on a highly eccentric trajectory at a mean orbital distance of 10.5000 AU.

Extended Orbital Architecture

RV semi-amplitude (K)

33.290 m/s

Transit mid-time (BJD)

2,450,140.0000

Long. of periastron (ω)

-25.71°

Angular separation (arcsec)

303.00000

Eq. Temperature

—

 

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.412

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Rickman et al. 2019

Instrument

CORALIE Spectrograph

Publication

2019-05

Observation locale

Ground

Discovery cohort

Planets confirmed in 2019 at La Silla Observatory (12 shown).

HD 20781 b · Rocky Terrestrial HD 20781 c · Sub-Neptune HD 21693 b · Sub-Neptune HD 45184 c · Sub-Neptune HD 134060 b · Sub-Neptune HD 31527 b · Sub-Neptune HD 20781 d · Sub-Neptune HD 20003 b · Sub-Neptune HD 31527 d · Sub-Neptune HD 45184 b · Sub-Neptune HD 51608 b · Sub-Neptune HD 136352 d · Sub-Neptune

Host System: HD 92788

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,744 K — cooler than the Sun (5,778 K)

Estimated Age

2.55 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.140 R☉

Stellar Mass

1.150 M☉

Metallicity [Fe/H]

0.27

Extended Stellar Properties

Surface gravity (log g)

4.390 dex

Stellar density

0.951 g/cm³

Systemic radial velocity

-4.33 km/s

Rotational v·sin i

2.72 km/s

Rotation period

31.00 days

Activity index (log R'HK)

-5.050

Metallicity ratio

[Fe/H]

Distance
34.65 parsec
Light-years 113.03 ly
V-band magnitude
7.32 mag
Voyager-speed travel 1,993,204 yr

Multi-band Host Photometry — 11 bands

5.78.07.96B7.32V7.14Gaia6.69TESS6.13J5.80H5.72K5.70W15.66W25.77W35.73W4

Astrometric Data

Parallax

28.828 mas

Total Proper Motion

223.742 mas/yr

PM Right Ascension

-15.13 mas/yr

PM Declination

-223.23 mas/yr

Galactic Cartesian (pc)

x = -0.943 · y = 0.330 · z = -0.038

Equatorial (J2000)

RA 160.70214° · Dec -2.18472°

Galactic ℓ, b

251.208° · 47.352°

Ecliptic λ, β

163.025° · -9.575°

HTM-20 index

-328263527

Observation Record

Photometric series

1

RV measurements

5

Stellar spectra

2

Archive notes

1

Similar Worlds

HD 195019 b

Gas Giant · G-type yellow (Sun-like)

Radius 13.00 R⊕ · 122.9 ly

MOA-2022-BLG-091L b

Gas Giant · G-type yellow (Sun-like)

Radius 13.00 R⊕ · 13,861.6 ly

HD 47186 c

Gas Giant · G-type yellow (Sun-like)

Radius 13.00 R⊕ · 122.2 ly

HIP 14810 b

Gas Giant · G-type yellow (Sun-like)

Radius 13.00 R⊕ · 164.6 ly

HD 35759 b

Gas Giant · G-type yellow (Sun-like)

Radius 13.00 R⊕ · 232.4 ly

HD 28254 b

Gas Giant · G-type yellow (Sun-like)

Radius 13.00 R⊕ · 180.3 ly

Explore Related Categories

Gas Giant Planets Radial Velocity Discoveries La Silla Observatory Mission G-type yellow (Sun-like) Hosts