Cassini UVIS: Solar and Stellar Brightness Time Series for Saturn's Rings and Moons

NASA's Cassini spacecraft recorded photometric observations of stellar occultations by Saturnian rings, satellites, and atmospheres, as well as the Jovian atmosphere. The dataset, last updated in March 2026, is a time series of brightness measurements from the Ultraviolet Imaging Spectrograph (UVIS) instrument. These observations provide a direct method for probing the structure and composition of celestial bodies by measuring how they block light from distant stars.

Use Cases

• Modeling the density and particle size distribution of Saturn's rings based on stellar occultation photometry.
• Analyzing the atmospheric structure of Saturn and Jupiter using brightness profiles from occultation events.
• Determining the shapes and orbits of Saturn's moons from precise timing of stellar disappearances and reappearances.
• Studying temporal changes in ring structure by comparing time-series brightness data from different observation periods.

Strengths

• Data originates from NASA's authoritative Cassini mission, a primary source for Saturn system science.
• Observations use the stellar occultation method, a direct and precise technique for remote measurement.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and file size are unknown, which may limit suitability assessment for large-scale analysis.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Photometric observations from the Cassini spacecraft's Ultraviolet Imaging Spectrograph (UVIS) instrument.

Time Range

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Freshness

Last updated 2026-03 13 19:16:49.868720; freshness should be verified.

Geography

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