258 citations · 741 across the 25 of their papers we have counts for
25 papers
The stellar occultation by (319) Leona on 13 September 2023 in preparation for the occultation of Betelgeuse
J. L. Ortiz, M. Kretlow, C. Schnabel +36
On 12 December 2023, the star Orionis (Betelgeuse) will be occulted by the asteroid (319) Leona. This represents an extraordinary and unique opportunity to analyze the diameter…
A large topographic feature on the surface of the trans-Neptunian object (307261) 2002 MS measured from stellar occultations
F. L. Rommel, F. Braga-Ribas, J. L. Ortiz +201
This work aims at constraining the size, shape, and geometric albedo of the dwarf planet candidate 2002 MS4 through the analysis of nine stellar occultation events. Using multichor…
The size, shape, density and ring of the dwarf planet Haumea from a stellar occultation
J. L. Ortiz, P. Santos-Sanz, B. Sicardy +90
Among the four known transneptunian dwarf planets, Haumea is an exotic, very elongated, and fast rotating body. In contrast to the other dwarf planets, its size, shape, albedo, and…
Multiwavelength observations of a bright impact flash during the January 2019 total lunar eclipse
José M. Madiedo, José L. Ortiz, Nicolás Morales +1
We discuss here a lunar impact flash recorded during the total lunar eclipse that occurred on 2019 January 21, at 4h 41m 38.09 +- 0.01 s UT. This is the first time ever that an imp…
Analysis of the September -Perseid outburst in 2013
J. M. Madiedo, J. Zamorano, J. M. Trigo-Rodriguez +11
We analyze the outburst experienced by the September -Perseid meteor shower on 9 September 2013. As a result of our monitoring the atmospheric trajectory of 60 multi-s…
First determination of the temperature of a lunar impact flash and its evolution
J. M. Madiedo, J. L. Ortiz, N. Morales
We report the first analysis of a flash produced by the impact of a meteoroid on the lunar surface and recorded both in the near-infrared and in the visible. Despite the fact that…
Multi-instrumental observations of the 2014 Ursid meteor outburst
Manuel Moreno-Ibáñez, Josep Ma. Trigo-Rodríguez, José María Madiedo +8
The Ursid meteor shower is an annual shower that usually shows little activity. However, its Zenith Hourly Rate sometimes increases, usually either when its parent comet, 8P/Tuttle…
The Northern ω-Scorpiid meteoroid stream: orbits and emission spectra
Francisco A. Espartero, José M. Madiedo
We analyze the activity of the Northern ω-Scorpiid meteor shower between 2010 and 2012. For this purpose we have employed an array of low-lux CCD video cameras and spectrographs de…
An Earth-grazing fireball from the Daytime -Perseid shower observed over Spain on 10 June 2012
José M. Madiedo, Francisco Espartero, Alberto J. Castro-Tirado +2
On 10 June 2012, an Earth-grazer meteor which lasted over 17 s with an absolute magnitude of -4.0 0.5 was observed over Spain. This work focuses on the analysis of this rare…
Observations of the Quadrantid meteor shower from 2008 to 2012: orbits and emission spectra
José M. Madiedo, Francisco Espartero, Josep M. Trigo-Rodríguez +5
The activity of the Quadrantids in January during several years (2008, 2010, 2011 and 2012) has been investigated in the framework of the SPanish Meteor Network (SPMN). For this pu…
Lunar impact flashes from Geminids, analysis of luminous efficiencies and the flux of large meteoroids on Earth
Jose L. Ortiz, Jose M. Madiedo, Nicolas Morales +2
We analyze lunar impact flashes recorded by our team during runs in December 2007, 2011, 2013 and 2014. In total, 12 impact flashes with magnitudes ranging between 7.1 and 9.3 in V…
MIDAS: Software for the detection and analysis of lunar impact flashes
José M. Madiedo, José L. Ortiz, Nicolás Morales +1
Since 2009 we are running a project to identify flashes produced by the impact of meteoroids on the surface of the Moon. For this purpose we are employing small telescopes and high…
Spectroscopy of a κ-Cygnid fireball afterglow
José M. Madiedo
A bright fireball with an absolute magnitude of -10.5 0.5 was recorded over the South of Spain on August 15, 2012. The atmospheric trajectory, radiant and heliocentric orbit…
Analysis of Moon impact flashes detected during the 2012 and 2013 Perseids
José M. Madiedo, José L. Ortiz, Faustino Organero +4
We present the results of our Moon impact flashes detection campaigns performed around the maximum activity period of the Perseid meteor shower in 2012 and 2013. Just one flash pro…
The -Geminid meteoroid stream: orbits, spectroscopic data and implications for its parent body
Jose M. Madiedo
By using an array of high-sensitivity CCD video devices and spectrographs, the activity of meteor events from the poorly-known -Geminid meteoroid stream has been monitored durin…
Orbits and emission spectra from the 2014 Camelopardalids
José M. Madiedo, Josep M. Trigo-Rodríguez, Jaime Zamorano +9
We have analyzed the meteor activity associated with meteoroids of fresh dust trails of Comet 209P/LINEAR, which produced an outburst of the Camelopardalid meteor shower (IAU code…
Bright Fireballs Associated with the Potentially Hazardous Asteroid 2007LQ19
Jose M. Madiedo, Josep M. Trigo-Rodriguez, Jose L. Ortiz +2
We analyze here two very bright fireballs produced by the ablation in the atmosphere of two large meteoroids in 2009 and 2010. These slow-moving and deep-penetrating events were ob…
A large lunar impact blast on September 11th 2013
Jose M. Madiedo, Jose L. Ortiz, Nicolas Morales +1
On 2013 September 11 at 20h07m28.68 0.01 s UTC, two telescopes operated in the framework of our lunar impact flashes monitoring project recorded an extraordinary flash produc…
Near Earth Object 2012XJ112 as a source of bright bolides of achondritic nature
Jose M. Madiedo, Josep M. Trigo-Rodriguez, Iwan P. Williams +6
We analyze the likely link between the recently discovered Near Earth Object 2012XJ112 and a bright fireball observed over the south of Spain on December 27, 2012. The bolide, with…
UV to far-IR reflectance spectra of carbonaceous chondrites. I. Implications for remote characterization of dark primitive asteroids targeted by sample-return missions
Josep M. Trigo-Rodriguez, Carles E. Moyano-Cambero, Jordi Llorca +8
We analyze here a wide sample of carbonaceous chondrites from historic falls (e.g. Allende, Cold Bokkeveld, Kainsaz, Leoville, Murchison, Murray and Orgueil), and from NASA Antarct…
Analysis of a superbolide from a Damocloid observed over Spain on July 13, 2012
Jose M. Madiedo, Josep M. Trigo-Rodriguez, Jaime Zamorano +15
A superbolide with an estimated absolute magnitude of -20+-1 was seen on July 13, 2012 over the center and south of Spain. This extraordinary event, which was witnessed by numerous…
The Geminid meteoroid stream as a potential meteorite dropper: a case study
J. M. Madiedo, J. M. Trigo-Rodriguez, A. J. Castro-Tirado +2
A Geminid fireball with an absolute magnitude of -13 was observed over the south of Spain on Dec. 15, 2009. This extraordinarily bright event (the brightest Geminid ever recorded b…
Spectroscopy and Orbital Analysis of Bright Bolides Observed over the Iberian Peninsula from 2010 to 2012
J. M. Madiedo, J. M. Trigo-Rodriguez, J. L. Ortiz +4
We present the analysis of the atmospheric trajectory and orbital data of four bright bolides observed over Spain, one of which is a potential meteorite dropping event. Their absol…
The 2011 October Draconids Outburst. II. Meteoroid Chemical Abundances from Fireball Spectroscopy
J. M. Madiedo, J. M. Trigo-Rodriguez, N. Konovalova +4
On October 8, 2011 the Earth crossed dust trails ejected from comet 21P/Giacobini-Zinner in the late 19th and early 20th Century. This gave rise to an outburst in the activity of t…