99942 Apophis

Asteroidplanetary systemESTABLISHED

Universe / Laniakea Supercluster / Local Group / Milky Way / 99942 Apophis

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Near-Earth Aten-class asteroid; notable 2029 close approach.

OBJECT_MODEL::3Ddrag to orbit · scroll to zoom

PHYSICAL_DATA

radius0 km

mass2.70e+10 kg

mass (M⊕)4.52e-15 M⊕

ORBITAL_DATA

semi-major0.922 AU

eccentricity0.191

inclination3.339°

period323.6 d

DERIVED_METRICStap a row for the formula

MISSION_PREDICTIONStap a row for the formula

SCALE_PLACEMENT

scale domainplanetary system

true distance0.92 AU

rendered radius36.0 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

confidence85%

evidenceestablished

imported fromseed

sources

· NEO catalog (dataset)

SIMULATION_MONITOR

computing…

MONITOR_SETTINGS

loading local state…

RELATED_OBJECTS

parent

children

none

same type (asteroid)

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