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Fire in the SkyS
© YouTube/Meteors
The fireball began at a height of about 104 km and ended at an altitude of around 75 km. It was recorded in the framework of the SMART Project from the astronomical observatories of Calar Alto (Almeria, Spain), La Hita (Toledo, Spain), Seville and Huelva.
This spectacular fireball flew over southern Cordoba in the early hours of July 28, at 3:29 local time (1:29 universal time). It occurred as a result of the entry into the Earth's atmosphere of a fragment from comet 169P / NEAT at about 90 thousand kilometers per hour. The luminous phenomenon began at an altitude of about 104 km and advanced in a northeasterly direction, extinguishing to about 75 km of altitude when it was almost on the vertical of the locality of Baena.
© YouTube/Meteors
The fireball began at a height of about 80 km and ended at an altitude of 45 km. It was recorded in the framework of the SMART Project from the astronomical observatories of Calar Alto (Almería, Spain) and La Hita (Toledo, Spain).
© YouTube/Meteors
The luminous phenomenon began on the province of Jaén, at a height of about 120 km above sea level, and ended at an altitude of about 75 km.
© Meteors (CAHA)
© Earth SkyArtist’s concept of an asteroid passing near Earth.
This means the asteroid's closest approach occurred 2.5 to 3 days before it was seen. Asteroid 2017 OO1 flyby had passed at about one-third the Earth-moon distance, or about 76,448 miles (123,031 km).
Although that's still a safe distance, a fact that stands out is that asteroid 2017 OO1 is about three times as big as the house-sized asteroid that penetrated the skies over Chelyabinsk, Russia in February, 2013, breaking windows in six Russian cities and causing more that 1,000 people to seek treatment for injuries, mostly from flying glass.
CBET nr. 4414, issued on 2017, July 24, announces the discovery of a comet (magnitude ~15.3) in the course of the "All-Sky Automated Survey for Supernovae" (ASASSN) program, from images taken with the 14-cm "Cassius" survey telescope at Cerro Tololo on July 19.32 UT. The new comet has been designated C/2017 O1.
I performed follow-up measurements of this object, while it was still on the neocp. Stacking of 10 unfiltered exposures, 60 seconds each, obtained remotely on 2017, July 23.7 from Q62 (iTelescope network) through 0.50-m f/6.8 astrograph + CCD + f/4.5 focal reducer, shows that this object is a comet with a sharp central condensation surrounded by diffuse coma about 3 arcmins in diameter.
My confirmation image (click on it for a bigger version)
Below you can see the discovery image by ASASSN survey
I performed follow-up measurements of this object, while it was still on the neocp. Stacking of 10 unfiltered exposures, 60 seconds each, obtained remotely on 2017, July 23.7 from Q62 (iTelescope network) through 0.50-m f/6.8 astrograph + CCD + f/4.5 focal reducer, shows that this object is a comet with a sharp central condensation surrounded by diffuse coma about 3 arcmins in diameter.
My confirmation image (click on it for a bigger version)
© Remanzacco Blogspot
YouTube/Exoss Citizen Science (screen capture)
© Kevin Palivec
© EPTVPhoto of the Observatory of Campinas shows meteor trajectory in the sky
The Municipal Observatory of Campinas (SP) caught the passage of a meteor in the region on Thursday night (July 13th). The cameras captured the moment when a luminous ball appears in the sky. See the meteor's trajectory in the video above. Residents reported feeling the shaking walls and windows and a loud noise.
Astronomer Júlio Lobo explains that "When a meteor falls and explodes, it causes a sonic boom, which usually shakes the walls and windows. [...] When this happens, it produces a meteorite, which is the 'pebble' that will stay on the ground. So if anyone happened to see a falling meteor, communicate us because this is of great scientific importance".
According to the astronomer, the Campinas observatory currently has six cameras, and this is the largest number of cameras in a Brazilian observatory. Many other meteors were recorded on Thursday night.
"We recorded 88 meteors on the same night. There is a network that studies this officially," said the astronomer.
Comment: It is well worth remembering what can come out of the sky, without any warning at all, like the Chelyabinsk meteor fireball.
Even NASA's own space data supports citizens' recent observations, namely the inconvenient fact that meteor fireballs are increasing dramatically.
Comment: This is the third fireball recorded over Spain in the past 11 days: