Resultados
| Resumen del 2008 |
Desde julio de 2008 estamos registrando de manera regular una cámara de videodetección de meteoros y bólidos desde el Observatorio UCM. Está cámara ha registrado más de 1000 meteoros en los seis primeros meses de 2009. En 500 horas de tiempo efectivo de observación el sistema ha detectado 20 bólidos más brillantes que magnitud -3,5. Algunos de ellos impresionantes como el más brillante hasta ahora SPMN20081128 que mostró un estallido tan brillante como la Luna y que fuee registrado por la estación de la SPMN en UCLM Toledo (detalles más abajo). |
No todo fueron bólidos. Las Perseidas y Gemínidas no defraudaron y ofrecieron un gran espectáculo. Las Oriónidas, Leónidas y Leo Minóridas sorprendieron con ritmos superiores a lo habitual. También las Táuridas brindaron algunos bólidos bonitos pero sin el incremento predicho por Asher (como en 1998 y 2005. Tal vez en el 2009).
Nuestro grupo ha fotografiado bólidos durante las principales lluvias de meteoros con instrumental diverso de cámaras de gran campo. Se pueden ver unos resúmenes en videos de Perseidas 2008 y fotos Perseidas 2008
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| 28/11/2008 Bólido asociado al enjambre de las Monoceróticas
Las cámaras de video- detección de SPMN en la estación de la UCLM en Toledo operada por el Prof. Jacinto Alonso-Azcárate y en la Universidad Complutense (UCM) registraron el bólido (con una impresionante fulguración rivalizando en brillo con la Luna) lo que permitió estimar su dirección y procedencia.
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El bólido está
asociado al enjambre de las Monocerótidas, entró a la atmósfera a una velocidad de 42 km/s
y está emparentado con el cometa C/1917 F1 (Mellish). |
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17/02/2009 NOSS Flare - Predicted and Observed
The flare has been sucesfully observed and recorded by Francisco Ocaña and Rafael Ponce at UCM Observatory, Madrid (Spain).
The flare was expected over Madrid during the pass of the satellites (NOSS 3-4 (A) - NOSS 3-4 (C)) on the 17th of February 2009 (18.40 UTC).
See full information at Visual SAT-Flare Tracker 3D by Simone Corbellini
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Click image to video 
Sirius is easily visible in the centre area of the video, while Procyon in the upper left corner. The maximum magnitude of the flare is of about -1. |
Click image to enlarge
 The flare of the satellite NOSS 3-4 (C) was longer than the flare of the companion, which reports the flare track.
The overall duration is of about 45 seconds. A longer flare should occur if the observer is closer to the location where the flare reverses its direction. |
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Observations of a very bright fireball and its likely link with comet C/1919 Q2 Metcalf
J.M. Trigo-Rodriguez; J.M. Madiedo; I:P. Williams; A.J. Castro-Tirado; J. Llorca; S. Vítek and M. Jelínek
Abstract.
A very bright fireball called Béjar (SPMN110708), with a maximum brightness of -18, was
observed over much of Spain as well as parts of Portugal and France on 2008 July 11 at
21:17:39 UTC... The heliocentric orbit of the meteoroid determined
from the observations had a perihelion essentially at the Earth’s orbit and an eccentricity
of 0.775, so that the orbit extends far beyond Jupiter, nearly reaching Saturn’s heliocentric
distance and is a typical orbit for a member of the Jupiter family of comets.
Monthly Notices of Royal Astronomical Society (2009) in press
Nota de prensa --- Press release |
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Images of SPMN110708 taken from Sevilla station (SPMN network) and from Torrelodones (Javier Pérez, photographer).
Diagram of eye witness Jaime Izquierdo (UCM) from his roof observatory inside Madrid.
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LEONID METEORS 2008
It was predicted an encounter with a 500 year-old dust trail of comet Tempel-Tuttle. Moderate activity was observed around the predicted time with THZ around 70-100. European observers had the highest rates.
[Extracted from CBET 1572]
" P. Ocaña (Madrid, Spain) reports high video rates from 1h30m UT onward at Perseid levels (ZHR about 70-90 meteors/hr)."
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J. M. Trigo (Spanish Meteor and Fireball Network) reports -- from video observations -- a peak of ZHR = 60 ± 5 meteors/hr at solar longitude 234.95 deg, accompanied by bright fireballs from an apparent radiant at R.A. = 153 deg, Decl. = +21 deg, and a population index of 1.7 ± 0.3 (N = 150)...
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Paco Ocaña (UCM, Spain) reported the detection of 28 Leonids from an apparent 4degrees-wide radiant at RA 153.deg and Dec= +22º. A first maximum took place at ~01:30TU and a second one at around 04:00 TU with brighter Leonids from a narrower (2º) radiant located at RA 153.4º Dec +22.2º
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| CBET 1572 Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU
http://www.cfa.harvard.edu/iau/cbat.html
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The Puerto Lapice Eucrite Fall Phenomenon
Madiedo, J. M.; Trigo-Rodriguez, J. M.; Llorca, J.; Borovicka, J.; Zamorano, J.; Izquierdo, J.; Ocaña, F.
Abstract.
The fall of the Puerto Lapice eucrite, which occurred on May 10, 2007, is analyzed here. This impressive daylight bolide was witnessed by thousands of people from Spain and is being carefully studied by the Spanish Meteor and Fireball Network (SPMN).
39th Lunar and Planetary Science Conference, (Lunar and Planetary Science XXXIX), held March 10-14, 2008 in League City, Texas. LPI Contribution No. 1391., p.1815
Abstract &
Full text PDF |
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Pictures of the recovery of one of the fragments by J. Izquierdo, A. del Solar, A. Sánchez, F. Ocaña & J. Zamorano (up).
(left) Some of the meteorites recovered by the SPMN network.
© A. Sánchez (ASAAF-UCM) and J. Izquierdo (AAM-UCM)
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The spectrum of fireball light taken with a 2-m telescope
Jiri Borovicka(1) and Jaime Zamorano(2)
(1) Astronomical Institute, 251 65 Ondrejov Observatory, Czech Republic
(2) Dept. Astrofisica, Universidad Complutense, 28040 Madrid, Spain
Abstract.
A bright fireball appeared on the sky during the spectrophotometric
observations with the 2.2-m telescope at the Calar Alto Observatory.
The CCD spectrum of the scattered light of the fireball has been
recorded. The spectrum is typical for a very bright, slowly moving fireball.
For the first time, the spectral region
6600-7150 A could be studied in such a case. Six
spectral lines were identified here, the most remarkable being the lithium
line at 6708 A. The estimated lithium abundance proved to be
consistent with meteoritic values. Earth, Moon, and Planets 68, 217-222 (1995)
Key words: meteors, spectra, lithium
Abstract &
Full text PDF |
Espectros de la galaxia Mrk8 obtenidos consecutivamente durante la noche del 18 al 19 de diciembre de 1988 en el Observatorio de Calar Alto (telescopio de 2.2m).
Durante la primera exposición un bólido atravesó el cielo iluminando completamente el interior de la cúpula.
La imagen de la izquierda muestra el espectro del bólido como un exceso del fondo de cielo que es por lo tanto menos intenso en la segunda exposición. |
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