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.

TOI-4640 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/TOI-4640 b

Confirmed exoplanet · Neptune Like

TOI-4640 b

Orbiting TOI-4640

Discovered in 2026 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 TOI-4640 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,026
Method: Transit
Radius: 2.843265 R⊕
Mass: 8.46 M⊕
Orbit: 2.68566 days
Distance: 245.089 pc

Planet profile

Orbit and physical properties

Orbital period: 2.68566 days
Semi-major axis: Not reported by the NASA Exoplanet Archive
Eccentricity: Not reported by the NASA Exoplanet Archive
Radius: 2.843265 Earth radii
Mass: 8.46 Earth masses
Mass provenance: M-R relationship
Density: 2.02 g/cm³
Equilibrium temperature: 1,378.86 K
Insolation: 854.2741 Earth flux

Host system

Star and system properties

Host star: TOI-4640
Stars in system: 1
Known planets in system: 1
Spectral type: Not reported by the NASA Exoplanet Archive
Stellar temperature: 5,743.01 K
Stellar radius: 1.06715 R☉
Stellar mass: 1.1 M☉
Stellar metallicity: Not reported by the NASA Exoplanet Archive
Stellar age: Not reported by the NASA Exoplanet Archive
Distance: 245.089 parsecs
Right ascension: 02h32m49.28s
Declination: +10d04m20.88s

Discovery

Detection and provenance

Discovery method: Transit
Discovery year: 2,026
Publication date: 2026-05
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.