Observatorio Astronůmico de La Sagra


LSSS Comets 2008 TC3 SpaceDebris Names Webcam



LSSS logo

 J75 La Sagra Sky Survey


The current instrumentation used by LSSS to scan the sky consists of three 0.45-m f/2.8 telescopes. Follow-up of potentially interesting objects is done with a dedicated tracking telescope. The entire data acquisition and data reduction is done remotely via the Internet, by LSSS team members in Spain, Croatia and Hong Kong. For security and safety reasons one operator is permanently present at OLS. He is also supporting the remote observers and doing regular maintenance work. Since the August 2008 dark run LSSS is officially classified as a survey by the MPC.


To this date (Oct. 2011) LSSS has been credited with 5.855 asteroid discoveries, of which 49 are NEOs. Some of these objects are classified as unusual (Near-Earth Objects, Centaurs, Jupiter Trojans, Mars Trojans, Hungarias etc.). The most productive month in terms of discoveries has been August 2008 with 584 discoveries. Furthermore four comets were discovered until now.




LSSS discovery statistics


The plot on the left shows the evolution of LSSS asteroid discoveries since August 2006. The first two years were devoted mainly to test different equipment and to evaluate its usefulness for asteroid hunting. The number of discoveries virtually exploded in the summer of 2008 when the current instrumentation became operational. The plot on the right shows the distribution of semimajor axis versus inclination values for all LSSS discoveries with known orbits.


LSSS asteroid discoveries by month

Distribution of a vs. i of LSSS asteroid discoveries



Near-Earth Objects discovered by LSSS


2006 WH1, 2008 OO, 2008 PG7, 2008 PV16, 2009 DA1, 2009 FD, 2009 HV77, 2009 KY1, 2009 KD5, 2009 NA, 2009 NJ, 2009 OC,
2009 QY33, 2009 RN, 2009 TA1, 2009 TK8, 2009 UK28, 2009 XD, 2009 XO, 2010 BB3, 2010 BC3, 2010 CC180, 2010 ES12, 2010 EF44,
2010 EV45, 2010 OC127, 2010 TM3, 2010 RS180, 2010 TV149, 2010 TC47, 2010 UX6, 2010 VN1, 2010 YB, 2011 DS9, 2011 DU9, 2011 GP59,
2011 KE, 2011 OV4, 2011 OQ5, 2011 OC18, 2011 OD18, 2011 PU1, 2011 PE2, 2011 QE14, 2011 QF14, 2011 QG21, 2011 QE38, 2011 RR12,
2011 SF25 new.



Comets discovered by LSSS


P/2009 QG31 (La Sagra), P/2009 T2 (La Sagra), P/2009 WJ50 (La Sagra), P/2010 R2 (La Sagra).



Some interesting things done at LSSS


Tracking Earth Impactor 2008 TC3 before impact over Sudan

Discovery of unidentified space debris from the Herschel Planck launch aboard Ariane 5 ECA





The LSSS team deeply appreciates the crucial confirmation and follow-up work done by the restless NEOCP community.



People behind LSSS


Present team members: Salvador Sanchez, Jaime Nomen, Bill Yeung, Miguel Hurtado, J. A. Jaume, P. Rios, F. Serra

Former team members: Reiner Stoss, Aleksandar Cikota, Stefan Cikota, Juan Rodriguez




One of the LSSS telescopes by night, scanning the sky for Near-Earth Objects.


One of the LSSS telescopes by night, scanning the sky for Near-Earth Objects.



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Observatorio Astronůmico de La Sagra
Los Collados
18820 Puebla de Don Fadrique, SPAIN
© Reiner M. Stoss - Contact: click here - latest update: 2011 Oct.