"You're not afraid of the dark, are you?" - Riddick "The best scientists are humble. They seek to understand, not to ensure their legacy, but merely to understand." - Mori
A man is a small thing, and the night is very large and full of wonders.
15" Obsession #1603 AstroTech AT66
Tal 200K Klevtsov, Tal 2M, Tal 1, Tal M, Tal Alcor, Burgess 90mm Fluorite, PZO T50x70, Carton 60/1000. Too many eyepieces and mounts.
Quote:InIt seems like the meteor actually just bounces off the atmosphere and zips out in space again (you can see it briefly at the end of the trail as a white spot that moves away from the trail rapidly and disappears). Clear skies!Thomas, Denmark
“The first gulp from the glass of natural sciences will turn you into an atheist, but at the bottom of the glass God is waiting for you.” ― Werner Heisenberg
12" LX200 GPS
10" LX200 GPS
4" Unitron 150
4" Bosma refractor
Denk Binotron 27, D14's and D21's
Galaxy Note 8 running SkySafari Pro via Bluetooth
Wireless Autostar II
Quote:I wouldn't be quick to dismiss any possibility that this event was related to the asteroid flyby.
Tom Polakis Tempe, AZ Visual observing, DSLR photography, lunar & planetary imaging http://www.pbase.com/polakis/
Paul B. Jones http://www.astrobin.com/users/bunyon/
Quote:Tom, another explanation is that it got much lower (closer to observer) than most. Most meteors stay very high and, therefore, go through less atmosphere and are visible for shorter lengths of time.
Quote:Another video which seems to support that the meteor just grazed the atmosphere and went out back in space again
Leica 8x20; Nikon Action 7x35; Vixen Apex Pro 8x42; Orion 15x63; Docter Nobilem 15x60
WO Megrez II 80 FD / APM 107mm f/6.5 / Mewlon 210 on DM-6 + Berlebach Planet
My eyepieces are made from the waste product of exploding stars. 10XTi 102XLT ST80A(2" Focuser) XW: All; XO: 2.58 Televue: Naglers-T1 Smoothside-full set, 17T4,12T4,Ethos 17,4.7; plossels-40,32,20,17,&7.4mm; Pans-22,24mm; Delos-6,8,12,17.3mm ES100: 5.5,9*,14,20 ES82: full set ES68: 16,20,24,34 NLV: 5,9,10,15 Ortho: HD-7,9; OPS-9,12 Meade RG 7mm Other: Pentax 12.5K(.965), 10mm Parks Zoom: Nag3-6 *=on b/o DAS Dark Site
Quote:http://rt.com/news/meteorite-crash-urals-chelyabinsk-283/Some reports indicate that the incoming meteorite was intercepted by a quick-response (automatic?) surface to air missile. This needs verification.
Quote:In any way: It has happened. A meteorite airburst has hit a populated area. This will hopefully wake some people up. It seems it was extremely close to a regional disaster. If it had happened over Moscow, then imagine the chaos...
Celestron 8SE Dobstuff 13.1": Swayze refigured Coulter mirror, 6 pt mirror cell (2 pt edge support) and CF focuser board made by me StarBlast 4.5 ST80/PortaMount II Zhumell 20x80/Oberwerk 15x70 on a Seronik-style tripod boom mount Hubble Optics 18 inch F/4 mirror.
Quote:There is nothing in the images posted so far on the Internet to suggest that the reported damage is from an "airburst" event.
Quote:Actual structural damage, except to one zinc factory is not evident beyond broken windows. Rather, it looks like the damage was generated by a relatively low altitude, very strong, sonic boom.
Quote:Likewise, the meteor does not terminate in a sudden flash but rather continues onward after a sharp peak in brightness (a point at which the double smoke trail suggests it broke into two major fagments?) for some distance before slowly fading out.
Quote:Nor is there anything to imply the strike was a grazing event, since all the video so far shows an angle of descent in the track, not near earth paralleling flight.
Quote:Preliminary information indicates that a fireball in Chelyabinsk, Russia, is not related to asteroid 2012 DA14, which is flying by Earth safely today. The Russian fireball is the largest reported since 1908, when a fireball hit Tunguska, Siberia. The fireball entered the atmosphere at about 40,000 mph (18 kilometers per second). The impact time was 7:20:26 p.m. PST, or 10:20:26 p.m. EST on Feb. 14 (3:20:26 UTC on Feb. 15), and the energy released by the impact was in the hundreds of kilotons. Based on the duration of the event, it was a very shallow entry. It was larger than the fireball over Indonesia on Oct. 8, 2009. Measurements are still coming in, and a more precise measure of the energy may be available later. The size of the object before hitting the atmosphere was about 49 feet (15 meters) and had a mass of about 7,000 tons. The fireball, which was about one-third the diameter of asteroid 2012 DA14, was brighter than the sun. Its trail was visible for about 30 seconds, so it was a grazing impact through the atmosphere. It is important to note that this estimate is preliminary, and may be revised as more data is obtained.
Orion 8"/F4.9 Newt / Atlas EQ-G / EQMOD AT72ED / Porta II Canon 40D / SSAGMy AstrobinMember of Sheep Hill Astronomical Association
Quote: Thomas, what you're seeing is the meteoroid decelerating to the point that it no longer ionizes the air it passes through.
Orion XT10g Meade LXD55 AR6 SE6 OTA
14" Strut; 10"XT; 102ES; 22 in Process; 3.5,5,7,10,14,20mm Pentax XW; 17.3 & 12mm Delos; 27mm Panoptic; 20&24mm ES 68; 24mm ES 82; 30mm ES 82; 6&10mm BCO;
Orlando, Florida, 81° W, 28.5° N, Joined: 8/27/11
CGEM, C8, C11, AT72ED, NexStar 5SE
Orion Starshoot Pro V2 Color, NexImage 5 / ASI120MC Planetary imagers
My photos: http://astrobin.com/users/Steve/
Quote:Biggest impact since Tunguska is a rather large event. Imagine if it had come down in a major urban center. ...
Edit: On a side note this is probably the second largest impact since Tunguska if the NASA numbers hold. The third event is the Sikhote-Alin Meteorite that hit in eastern Siberia in 1947 in the then Soviet Union.