3I/ATLAS

Interstellar Objectplanetary systemESTABLISHED

Universe / Laniakea Supercluster / Local Group / Milky Way / Solar System / 3I/ATLAS

Third confirmed interstellar object (C/2025 N1 ATLAS); a hyperbolic comet from outside the Solar System, perihelion ~1.36 AU on 2025-10-29.

OBJECT_MODEL::3Ddrag to orbit · scroll to zoom

PHYSICAL_DATA

radius6 km

ORBITAL_DATA

semi-major-0.264 AU

eccentricity6.141

inclination175.1°

DERIVED_METRICStap a row for the formula

MISSION_PREDICTIONStap a row for the formula

SCALE_PLACEMENT

scale domainplanetary system

true distance1.36 AU

rendered radius38.4 u

directionsymbolic

Radial distance is real (compressed for this scale domain); angular direction is symbolic — the source has distance-from-Earth but no RA/Dec.

EVIDENCE_AND_SOURCE

confidence90%

evidenceestablished

imported fromseed+catalog

sources

· JPL Small-Body Database (SBDB) (dataset)

SIMULATION_MONITOR

computing…

MONITOR_SETTINGS

loading local state…

RELATED_OBJECTS

parent

children

none

same type (interstellar object)

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