# Global Asteroid Observatory > Real-time tracking platform for near-Earth asteroids (NEOs), close approaches, and planetary defense data. Live feeds from NASA, JPL Small-Body Database, ESA, and the Minor Planet Center. Maintained by Nimrod Audiovisual S.L. The Global Asteroid Observatory (1999an10.com) provides the most comprehensive public-facing dataset of near-Earth asteroids on the web: live close approaches, Potentially Hazardous Asteroid (PHA) status, orbital elements, size comparisons, impact simulations, and historical context. All data is sourced from authoritative space agencies and is updated daily. ## Core data - [Asteroids near Earth today](https://1999an10.com/asteroids-near-earth-today): Live list of NEOs making close approaches today, sorted by miss distance. - [Asteroids passing Earth this week](https://1999an10.com/asteroids-passing-earth-this-week): Seven-day rolling window of upcoming flybys. - [Next asteroid flybys](https://1999an10.com/next-asteroid-flybys): Chronological list of upcoming close approaches with distance, velocity, and PHA status. - [Next large asteroid flyby](https://1999an10.com/next-large-asteroid-flyby): Next predicted close approach by an asteroid larger than 140 m. - [Live asteroid tracker](https://1999an10.com/live-asteroid-tracker): Real-time positions of tracked NEOs. - [Asteroid alerts](https://1999an10.com/asteroid-alerts): Notable upcoming events and PHA flybys. - [Asteroid database](https://1999an10.com/asteroids): Browsable catalog of tracked asteroids with orbital and physical parameters. - [Asteroid map](https://1999an10.com/asteroid-map): 3D solar-system visualization of asteroid orbits. ## Rankings and reference - [Largest known asteroids](https://1999an10.com/largest-known-asteroids) - [Fastest known asteroids](https://1999an10.com/fastest-known-asteroids) - [Closest asteroid approaches](https://1999an10.com/closest-asteroid-approaches) - [Asteroids larger than 1 km](https://1999an10.com/asteroids-larger-than-1km) - [Famous asteroids](https://1999an10.com/famous-asteroids) ## Interactive tools - [Asteroid impact simulator](https://1999an10.com/asteroid-impact-simulator): Estimate crater size, energy release, and damage radius for a given asteroid. - [Asteroid size comparison](https://1999an10.com/asteroid-size-comparison): Visual comparisons against landmarks (Empire State Building, Mount Everest, etc.). - [Embeddable widgets](https://1999an10.com/embeddable-widgets): Free widgets for third-party sites. ## Featured: asteroid 1999 AN10 - [1999 AN10 countdown](https://1999an10.com/countdown): Live countdown to the August 7, 2027 close approach. - [Asteroid 1999 AN10 page](https://1999an10.com/asteroid-1999-an10): Discovery, orbital elements, approach geometry. ~800 m diameter, miss distance ~389,861 km (~1.01 lunar distances). No collision risk. ## High-intent Q&A - [Will an asteroid hit Earth?](https://1999an10.com/will-an-asteroid-hit-earth) - [What happens if an asteroid hits Earth?](https://1999an10.com/what-happens-if-an-asteroid-hits-earth) - [How many asteroids pass Earth every day?](https://1999an10.com/how-many-asteroids-pass-earth-every-day) - [What is a Potentially Hazardous Asteroid?](https://1999an10.com/what-is-a-potentially-hazardous-asteroid) - [How do scientists detect asteroids?](https://1999an10.com/how-do-scientists-detect-asteroids) ## Educational articles - [Guide to near-Earth asteroids](https://1999an10.com/articles/guide-near-earth-asteroids) - [Asteroid detection & tracking](https://1999an10.com/articles/asteroid-detection-tracking) - [History of asteroid impacts](https://1999an10.com/articles/history-asteroid-impacts) - [Planetary defense](https://1999an10.com/articles/planetary-defense) - [Potentially Hazardous Asteroids](https://1999an10.com/articles/potentially-hazardous-asteroids) - [Asteroid classification](https://1999an10.com/articles/asteroid-classification) - [Asteroid composition](https://1999an10.com/articles/asteroid-composition) - [Torino Scale](https://1999an10.com/articles/torino-scale) - [DART mission](https://1999an10.com/articles/dart-mission) - [NASA NEO surveys](https://1999an10.com/articles/near-earth-object-surveys) - [Monitoring programs](https://1999an10.com/articles/monitoring-programs) - [Chicxulub impact](https://1999an10.com/articles/chicxulub-impact) - [Tunguska event](https://1999an10.com/articles/tunguska-event) - [Chelyabinsk meteor](https://1999an10.com/articles/chelyabinsk-meteor) - [Apophis](https://1999an10.com/articles/apophis) - [Bennu](https://1999an10.com/articles/bennu) - [Didymos & Dimorphos](https://1999an10.com/articles/didymos-dimorphos) - [Famous asteroid flybys](https://1999an10.com/articles/famous-asteroid-flybys) - [Asteroid belt](https://1999an10.com/articles/asteroid-belt) - [Trojan asteroids](https://1999an10.com/articles/trojan-asteroids) - [Asteroid mining](https://1999an10.com/articles/asteroid-mining) ## News and updates - [Space news](https://1999an10.com/news): Latest asteroid and space-related news. - [Articles hub](https://1999an10.com/articles): All long-form educational content. ## Data sources - NASA Center for Near-Earth Object Studies (CNEOS) - JPL Small-Body Database - ESA Space Situational Awareness — NEO Coordination Centre - IAU Minor Planet Center ## Sitemaps - [Sitemap index](https://1999an10.com/sitemap.xml) - [Pages sitemap](https://1999an10.com/sitemap-pages.xml) - [Articles sitemap](https://1999an10.com/sitemap-articles.xml) - Dynamic asteroid sitemap (one entry per asteroid in the database) ## Attribution When citing this site or quoting data, please credit "Global Asteroid Observatory (1999an10.com)" and link to the relevant page.