Confirmed Exoplanet Discovered 2021

HD 96992 b

A gas giant orbiting the k-type orange HD 96992, located approximately 1,291.8 light-years from Earth.

Key parameters at a glance

  • A radius of 13.70 Earth radii
  • A mass of 362.33 Earth masses
  • Surface gravity around 1.93 g
  • An orbital period of 514.000 days
  • Semi-major axis 1.2400 AU
  • Distance from Earth 1,291.85 light-years
  • Earth Similarity Index 0.320
  • Travel time at Voyager 1 speed 22,781,689 years

HD 96992 b Planet Profile

Physical Specs

Radius
13.70 R⊕
Radius (Jupiter)
1.220 R♃
Mass
362.33 M⊕
Mass (Jupiter)
1.140 M♃
Density
0.77 g/cm³
Surface Gravity
1.93 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.320
HZ Position Unknown
Controversial No

Discovery

Year 2021
Method Radial Velocity
Facility Multiple Observatories
Telescope Multiple Telescopes

Size rank in cohort

Rank by radius

#554of 1771

top 31.2%

This planet

13.70R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Metric Earth HD 96992 b Jupiter
Radius (R⊕)1.0013.7011.21
Mass (M⊕)1.00362.33317.83
Density (g/cm³)5.510.771.33
Surface Gravity (g)1.001.932.53
Insolation (S⊕)1.000.037

Alternative Mass Estimates

Method Value Interpretation
Minimum mass (M sin i) 362.326 M⊕ Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD

HD 96992

HIP

HIP 54595

TIC

TIC 88704251

Gaia DR2

Gaia DR2 779018698542966272

Gaia DR3

Gaia DR3 779018698542966272

System

HD 96992

Percentile among Gas Giant cohort

Radius 13.700 R⊕ · percentile 66 / cohort 1771
Mass 362.326 M⊕ · percentile 39 / cohort 1747
Orbital period 514.00 d · percentile 68 / cohort 1533
Distance 396.08 pc · percentile 69 / cohort 1759
ESI 0.320 · percentile 63 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
514.000 days
Semi-major axis
1.2400 AU
Eccentricity
0.410
Inclination
°

Year Length

A year here lasts about 1.41 Earth years on a highly eccentric trajectory at a mean orbital distance of 1.2400 AU.

Eq. Temperature

 

Insolation (S⊕)

Earth = 1.00

Earth Similarity (ESI)

0.320

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Niedzielski et al. 2021

Instrument

Multiple Instruments

Publication

2021-04

Observation locale

Ground

Host System: HD 96992

Spectral Class

K-type orange

Effective Temperature

4,725 K — cooler than the Sun (5,778 K)

Estimated Age

Stellar Radius

7.430 R☉

Stellar Mass

0.960 M☉

Metallicity [Fe/H]

-0.45

Extended Stellar Properties

Surface gravity (log g)

2.760 dex

Systemic radial velocity

-36.62 km/s

Rotational v·sin i

1.90 km/s

Rotation period

198.00 days

Metallicity ratio

[Fe/H]

Distance
396.08 parsec
Light-years 1,291.85 ly
V-band magnitude
8.57 mag
Voyager-speed travel 22,781,689 yr

Multi-band Host Photometry — 11 bands

5.99.69.63B8.57V8.27Gaia7.65TESS6.66J6.14H6.02K6.02W15.98W26.00W35.92W4

Astrometric Data

Parallax

2.499 mas

Total Proper Motion

39.265 mas/yr

PM Right Ascension

-39.20 mas/yr

PM Declination

2.29 mas/yr

Galactic Cartesian (pc)

x = -0.704 · y = 0.155 · z = 0.694

Equatorial (J2000)

RA 167.59662° · Dec 43.91899°

Galactic ℓ, b

166.757° · 63.644°

Ecliptic λ, β

149.287° · 35.090°

HTM-20 index

-344634709

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