RT Journal Article T1 On the activity of the γ -Ursae Minorids meteoroid stream in 2010 and 2011 A1 Madiedo Gil, José María A1 Trigo Rodríguez, Josep María A1 Lyytinen, E. A1 Dergham, J. A1 Pujols, P. A1 Ortiz Moreno, José Luis A1 Cabrera Caño, Jesús AB Accurate orbital data obtained for the recently discovered γ -Ursae Minorids meteoroid streamduring the 2010 and 2011 Spanish Meteor Network and Finnish Fireball Network observingcampaigns are presented. In particular, we focus on an outburst detected in 2010 and onthe analysis of the first emission spectrum recorded for a member of this meteoroid stream.An array of high-sensitivity CCD video devices operating from different locations in Spainand Finland was used to perform this study. We have obtained precise trajectory, radiant andorbital information for seven members of this stream. Considerations about its likely parentbody based on orbital dissimilarity criteria are made. We also present an estimation of thetensile strength for these meteoroids and a unique emission spectrum of a γ -Ursae Minoridfireball that reveals that the main rocky components have chondritic abundances. PB Oxford University Press SN 0035-8711 SN 1365-2966 (electrónico) YR 2013 FD 2013 LK http://hdl.handle.net/10272/9329 UL http://hdl.handle.net/10272/9329 LA eng NO Madiedo Gil, J.M., Trigo Rodríguez, J.M., Lyytinen, E., Dergham, J., Pujols, P., Ortiz Moreno, J.L., Cabrera Caño, J.: "On the activity of the γ -Ursae Minorids meteoroid stream in 2010and 2011". Monthly Notices of the Royal Astronomical Society. Vol. 431, n. 2, pág. 1678-1685, (2013). ISSN 0035-8711 NO We acknowledge Timo Kantola, Mika Jarvinen, Ari Jokinen and Ilkka Yrjola for the images recorded from Finland during the 2010 GUM outburst. Besides, we thank Fundacion AstroHita for its support in the establishment and operation of the automated meteor observing station located at La Hita Astronomical Observatory (La Puebla de Almoradiel, Toledo, Spain). We also acknowledge support from the Spanish Ministry of Science and Innovation (projects AYA2009-13227, AYA2009-14000-C03-01, AYA2011-26522 and AYA2011-30106-C02-01), CSIC (grant #201050I043) and Junta de Andalucia (project P09-FQM-4555). DS Repositorio Institucional de la Universidad de Huelva RD 31 may 2026