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 153557 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 153557 b

Confirmed exoplanet · Neptune Like

HD 153557 b

Orbiting HD 153557

Discovered in 2022 using Radial Velocity. 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 153557 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,022
Method: Radial Velocity
Radius: 4.77 R⊕
Mass: 20.341018 M⊕
Orbit: 7.29903 days
Distance: 17.9412 pc

Planet profile

Orbit and physical properties

Orbital period: 7.29903 days
Semi-major axis: 0.068 AU
Eccentricity: 0.065
Radius: 4.77 Earth radii
Mass: 20.341018 Earth masses
Mass provenance: Msini
Density: 1.03 g/cm³
Equilibrium temperature: 772.12 K
Insolation: 59.2234 Earth flux

Host system

Star and system properties

Host star: HD 153557
Stars in system: 1
Known planets in system: 3
Spectral type: K0
Stellar temperature: 4,837 K
Stellar radius: 0.745171 R☉
Stellar mass: 0.79 M☉
Stellar metallicity: Not reported by the NASA Exoplanet Archive
Stellar age: Not reported by the NASA Exoplanet Archive
Distance: 17.9412 parsecs
Right ascension: 16h57m52.96s
Declination: +47d22m04.28s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,022
Publication date: 2022-09
Discovery locale: Ground
Facility: Multiple Observatories
Telescope: Multiple Telescopes
Instrument: Multiple Instruments
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.