La Sagra Observatory

La Sagra Observatory (Spanish: Observatorio Astronómico de La Sagra; OLS; observatory code: L98) is an astronomical observatory located in the province of Granada, Spain. It uses four robotic telescopes both designed and built (hardware and software) by the scientists of the Observatorio Astronómico de Mallorca (OAM) who operate them remotely by telecontrol daily, discharging data from Mallorca using the Internet, to process them by means of algorithms designed "in house" which helped to detect asteroid 367943 Duende.[1][2] among the other 1706 asteroids, with a 12th place in the ranking of asteroid discoveries.[3] Its activities include, as part of its La Sagra Sky Survey, tracking small Solar System bodies, particularly near-Earth objects, and space debris.

La Sagra Observatory
Alternative namesObservatorio Astronómico de La Sagra
Observatory code J75 
Coordinates37°59′02″N 2°33′52″W
Location of La Sagra Observatory


Among the asteroids discovered and tracked by Observatorio Astronómico de Mallorca thanks to its four remotely operated telescopes[1][4] and to the clear skies of Sierra de la Sagra, on February 15, 2012, a team coordinated by Jaume Nomen, astronomer at OAM located the asteroid Duende,[1] and calculated that the following year, more specifically on 15 February 2013, it would pass 27,700 km (17,200 mi) from Earth, the closest known distance an asteroid of that absolute magnitude has come to the planet, and well within the geosynchronous orbit,[5][6] of the geosynchronous satellites at 35,786 km (22,236 mi).[7]

La Sagra Sky Survey

The La Sagra Sky Survey (LSSS) is an astronomical survey conducted at La Sagra Observatory. The numbered comets 233P/La Sagra, 279P/La Sagra and 324P/La Sagra were discovered by LSSS.


  1. (in Spanish) Guia sobre el asteroide 2012 DA14
  2. Observatorio de La Sagra
  3. (in English) Minor Planet Center: Minor Planet Discoverers
  4. "Observatorio Astronómico de La Sagra". Archived from the original on 17 February 2013. Retrieved 15 February 2013.
  5. Paul Chodas & Don Yeomans (1 February 2013). "Asteroid 2012 DA14 To Pass Very Close to the Earth on February 15, 2013". NASA/JPL Near-Earth Object Program Office. Retrieved 1 February 2013.
  6. "Asteroid 2012 DA14 set for record-breaking Earth pass" BBC. Retrieved 15 February 2013.
  7. Braenig, R. A. "Orbital mechanics" Archived 4 February 2012 at the Wayback Machine Retrieved 15 February 2013.

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