AstroAlert

Know exactly when satellites pass above you.

What is AstroAlert?

AstroAlert is your personal sky-watch assistant. It tells you exactly which satellites, planets, comets, and deep-sky objects will pass right above your location in the next 24 hours — including spectacular zenith events above 70°. Powered by NASA/JPL data, it combines real-time calculations with educational content, a full astronomy glossary, and detailed object sheets. The sky above you, revealed with precision.

Tool Details

Categories Productivity
Website astroalert.app
Added November 27, 2025
Platforms Web · iOS · Android
Social

Frequently Asked Questions about AstroAlert

When did AstroAlert become popular?

AstroAlert became popular around November 27, 2025.

Is AstroAlert available on mobile devices?

Yes, AstroAlert is available on iOS (App Store) & Android (Google Play).

What type of tool is AstroAlert?

AstroAlert belongs to the following categories: Productivity.

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Keywords

Accuracy Conditions Content Core Feature Coverage Data Freshness Education Global Support Localization Notifications Offline Use Performance Personalization Photographers Pricing Reliability Sharing Timing Visualization

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