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Spacecraft · evidence and sources

Juno

NASA spacecraft orbiting Jupiter to study its atmosphere, magnetic field, and interior structure.

JPL Horizons · to Nov 2026 Trajectory basis, the same label the app shows on the selection card.

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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
Trajectory Catalog

Trajectory from Horizons state vectors

Juno's position is interpolated between 3,937 heliocentric state-vector samples from JPL Horizons that run through 2026-11-09. Past the last sample the marker holds its final position.

SourceJPL Horizons · record juno
Epoch2026-09-29 to 2026-11-09
MethodJ2000 equatorial, Sun-centred position samples loaded from a versioned Blob snapshot. Historical encounter samples are preserved; active mission windows are refreshed daily by Trigger.dev in UTC. The app interpolates linearly between adjacent samples.
UncertaintyAccuracy depends on the mission ephemeris and prediction horizon. Linear interpolation adds error that grows with sample spacing (hours in the current window, finer around historical flybys). No trajectory covariance is stored.
LimitPosition only. Spacecraft attitude (which way it points) is not modelled, and no covariance is stored.
Physical data Undocumented

Bulk properties

Juno: mass 1.593 × 10^3 kg. These values are bundled with the object record and drive the rendered size.

SourceBundled object record
LimitThe object catalog does not record where these values came from; treat them as unverified until the record is completed.
Appearance Reconstructed

Close-up hull model

The close-up shows a published 3D model scaled to 20 m deployed solar-array span. Distributed through NASA 3D Resources; original mission-agency credit applies.

SourceNASA 3D Resources · record juno
MethodSpace Time normalises the source model to the published deployed dimension.
LimitSource-asset presentation pose; time-dependent flight attitude is not modeled.
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.

Trajectory coverage: 2026-09-29 to 2026-11-09 (3,937 samples). Outside that window the marker holds its last known position.

What is not measured

  • Appearance: a reconstruction from measurements, not a direct observation. Close-up hull model. Source-asset presentation pose; time-dependent flight attitude is not modeled.

Not yet documented

  • Physical data: The object catalog does not record where these values came from; treat them as unverified until the record is completed.
  • 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.
DatasetBundle updatedHorizonAutomated
Spacecraft trajectories (Blob snapshots)
Source retrieved:
Per craft: each evidence page states the first and last sample date Yes, daily (Trigger.dev)
Trigger.dev → private Blob snapshots; preserved historical encounter samples
Last successful check: 8 October 2026 · success

Sources cited

Further reading

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

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