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Asteroid · evidence and sources

3 Juno

One of the largest main-belt asteroids; once classified as a planet.

Kepler elements Orbit basis, the same label the app shows on the selection card.

Open in Space Time

Every aspect, with its origin

One record per aspect. The origin says what kind of thing each value is; the source says where it came from; the limit says what it cannot tell you.

ObservedCatalogComputedReconstructedIllustrativeUndocumented
Orbit Computed

Orbit from osculating elements

3 Juno is placed by solving a Keplerian orbit at the simulation time (a = 2.7 AU, e = 0.256, i = 13°, period 1,590 d).

Epoch2025-11-21T00:00:00Z
MethodTwo-body propagation of the stored elements by the shared orbit service; no perturbations.
LimitA two-body orbit ignores planetary perturbations and non-gravitational forces; the dated JPL snapshot in the app's live catalog supersedes these bundled elements.
Identity Catalog

3 Juno source record

3 Juno is identified from the cited source record.

Physical data Catalog

Bulk properties

3 Juno: mean radius 123.3 km. These values are bundled with the object record and drive the rendered size.

Appearance Illustrative

Close-up appearance

The surface is a procedural shape unless a source record above says otherwise. It is not a measured shape model.

SourceSpace Time rendering contract
LimitNot a resolved observation.
Description Undocumented

Description and facts

The short description and the fact list are written by the Space Time authors for orientation. They are not quoted from a catalog field and carry no citation of their own.

SourceSpace Time editorial text
LimitBackground reading is linked under Further reading; it is not the source of the displayed numbers.

What is not measured

  • Appearance: a picture, not a measurement. Close-up appearance. Not a resolved observation.

Not yet documented

  • Description: Background reading is linked under Further reading; it is not the source of the displayed numbers.

Dataset freshness

Snapshots this page depends on, read from the generated manifests at request time.
DatasetLast refreshedHorizonAutomated
Current comets and near-Earth asteroids no snapshot date Osculating elements at the snapshot epoch; propagated as two-body conics Yes, weekly (Monday data job)
npm run fetch:data

Sources cited

Further reading

Wikipedia: 3 Juno (background only; not the source of the displayed numbers)

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