Skip to content

Missions Planets Black Holes 3D Map Agencies Blog About Sign in

Menu

Missions Planets Black Holes 3D Map Agencies Blog About Sign in

Acquiring mission data

Missions Planets Black Holes 3D Map Agencies Blog About apexandromeda.com

This is an independent informational project and is not affiliated with, endorsed by, or sponsored by NASA, ESA, JAXA, Roscosmos, CNSA, ISRO, CSA, or any other space agency. Agency names, logos, and other marks are used for identification where permitted by their respective usage policies.

A passion project from the team behind Apex Rental Pro.

HD 181720 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 181720 b

Confirmed exoplanet · Gas Giant

HD 181720 b

Orbiting HD 181720

Discovered in 2009 using Radial Velocity. This page reflects the latest synchronized NASA Exoplanet Archive composite record.

NASA Archive record ↗Back to catalog →

Generic gas giant catalog artwork; not a direct image of HD 181720 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,009
Method: Radial Velocity
Radius: 14 R⊕
Mass: 127.132 M⊕
Orbit: 956 days
Distance: 60.2046 pc

Planet profile

Orbit and physical properties

Orbital period: 956 days
Semi-major axis: 1.85 AU
Eccentricity: 0.26
Radius: 14 Earth radii
Mass: 127.132 Earth masses
Mass provenance: Msini
Density: 0.255 g/cm³
Equilibrium temperature: 249.06 K
Insolation: 0.5671 Earth flux

Host system

Star and system properties

Host star: HD 181720
Stars in system: 1
Known planets in system: 1
Spectral type: G1 V
Stellar temperature: 5,736 K
Stellar radius: 1.5 R☉
Stellar mass: 1.03 M☉
Stellar metallicity: -0.62 dex
Stellar age: Not reported by the NASA Exoplanet Archive
Distance: 60.2046 parsecs
Right ascension: 19h22m53.09s
Declination: -32d55m15.02s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,009
Publication date: 2010-03
Discovery locale: Ground
Facility: La Silla Observatory
Telescope: 3.6 m ESO Telescope
Instrument: HARPS Spectrograph
NASA Exoplanet Archive: Open composite record ↗

Community discussion

Comments 0

No comments yet. The airlock is open.

Sign in or create an account to comment and vote.