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 191939 c | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 191939 c

Confirmed exoplanet · Neptune Like

HD 191939 c

Orbiting HD 191939

Discovered in 2020 using Transit. This page reflects the latest synchronized NASA Exoplanet Archive composite record.

NASA Archive record ↗Back to catalog →

Generic neptune like catalog artwork; not a direct image of HD 191939 c — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,020
Method: Transit
Radius: 3.195 R⊕
Mass: 8 M⊕
Orbit: 28.579743 days
Distance: 53.6089 pc

Planet profile

Orbit and physical properties

Orbital period: 28.579743 days
Semi-major axis: 0.1752 AU
Eccentricity: 0.034
Radius: 3.195 Earth radii
Mass: 8 Earth masses
Mass provenance: Mass
Density: 1.35 g/cm³
Equilibrium temperature: 600 K
Insolation: 21 Earth flux

Host system

Star and system properties

Host star: HD 191939
Stars in system: 1
Known planets in system: 6
Spectral type: G9 V
Stellar temperature: 5,348 K
Stellar radius: 0.94 R☉
Stellar mass: 0.81 M☉
Stellar metallicity: -0.15 dex
Stellar age: 8.7 Gyr
Distance: 53.6089 parsecs
Right ascension: 20h08m06.15s
Declination: +66d51m01.09s

Discovery

Detection and provenance

Discovery method: Transit
Discovery year: 2,020
Publication date: 2020-09
Discovery locale: Space
Facility: Transiting Exoplanet Survey Satellite (TESS)
Telescope: 0.1 m TESS Telescope
Instrument: TESS CCD Array
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.