+ Minor planets discovered: 2087 see

The Astronomical Observatory of Mallorca (, OAM) is an observatory just south of Costitx, Mallorca, Spain.

The observatory was inaugurated in May 1991 and was the first astronomical center in the Balearic Islands autonomous community and province of Spain.

The observatory is a pioneer among Spanish observatories and uses robotic telescopes (four of them located at La SagraObservatorio Astronómico de La Sagra Observatorio de La Sagra in Andalucia) to discover and track asteroids.

Researchers at the OAM have found asteroids that are potential threats to Earth, such as the . is director of the OAM. In 2008, asteroid number 128036, discovered at the OAM in 2003, was named after Spanish tennis player Rafael Nadal. As of 2008, the OAM tracks more than 2,000 asteroids.

There is a large planetarium attached to the observatory, which often runs performances open to the public. The Open University is one of a number of academic institutions which runs summer schools at the observatory.Observing the Universe, Open University – Course content, Summary

In March 2017, the observatory has closed and gone into liquidation. The land will be up for auction at €1.7 million.

List of discovered minor planets

73533 Alonso 25 July 2003 115210 Mutvicens19 September 2003 120141 Lucaslara 7 April 2003 128036 Rafaelnadal 28 May 2003 5 April 1999 160575 Manuelblasco13 April 1999 164589 La Sagra 11 August 2007 166974 Joanbinimelis24 July 2003 170193 Joanguillem24 July 2003 171424 Rudyfernandez13 July 2007 171458 Pepaprats 7 October 2007 175625 Canaryastroinst23 July 2007 178267 Sarajevo 31 December 2007 181419 Dragonera28 September 2006 185101 Balearicuni19 September 2006 185164 Ingeburgherz 27 September 2006 185498 Majorcastroinst17 September 2007 11 November 2007 185560 Harrykroto 7 January 2008 185561 Miquelsiquier12 January 2008 13 January 2008 185578 Agustinelcasta28 January 2008 185579 Jorgejuan29 January 2008 185580 Andratx29 January 2008 30 January 2008 185638 Erwinschwab 1 March 2008 185639 Rainerkling 2 March 2008 30 January 2008 187669 Obastromca5 February 2008 187700 Zagreb 2 March 2008 27 April 2008 189848 Eivissa 23 March 2003 9 July 2008 25 July 2007 8 July 2008 6 August 2008 8 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