ReconRat Posted September 11, 2012 Report Share Posted September 11, 2012 ImaGeekAmateur astronomer captured a fireball on Jupiter from something impacting the planet:http://georgeastro.weebly.com/jupiter.htmlhttp://www.universetoday.com/97294/viewing-alert-jupiter-may-have-been-impacted-by-a-fireball/http://www.universetoday.com/wp-content/uploads/2010/06/wesley_jupimpact_color.jpghttp://georgeastro.weebly.com/uploads/1/3/3/4/13344093/jupiterimpact.jpg Quote Link to comment Share on other sites More sharing options...
ReconRat Posted September 11, 2012 Author Report Share Posted September 11, 2012 btw, rough guess... if that had hit anywhere on Earth, most of us would be toast by now. Quote Link to comment Share on other sites More sharing options...
cmh_sprint Posted September 11, 2012 Report Share Posted September 11, 2012 Wow, cool pics. That was a substantial impact from the size of that fireball. My question would be how does an object big enough to make that large of a fireball not get noticed and tracked weeks or months before the actual impact? Quote Link to comment Share on other sites More sharing options...
cmh_sprint Posted September 11, 2012 Report Share Posted September 11, 2012 btw, rough guess... if that had hit anywhere on Earth, most of us would be toast by now.Very true. Calling Bruce Willis and Ben Affleck, your Shuttle is waiting. Quote Link to comment Share on other sites More sharing options...
ReconRat Posted September 11, 2012 Author Report Share Posted September 11, 2012 Wow, cool pics. That was a substantial impact from the size of that fireball. My question would be how does an object big enough to make that large of a fireball not get noticed and tracked weeks or months before the actual impact?Probably was a dark object, like a common dirty asteroid. Not a comet or something that would leave a visible trail. Too small to have actually tracked from Earth with radar. Maybe quarter mile diameter? Or less?Might still find it on deep space radar records if anything was pointed that direction lately. There's a lot of stuff out there, it's easy to miss something even like that with the results it had. Quote Link to comment Share on other sites More sharing options...
Helmutt Posted September 11, 2012 Report Share Posted September 11, 2012 (edited) btw, rough guess... if that had hit anywhere on Earth, most of us would be toast by now.Damn! Thats one huge dent in Jupiter now, can they figure how big the fireball would have had to have been to be seen this far away? Surely there's a series of formula to convert that into mass?:edit:Io's 1.13 arc sec in diameter? What is an arc sec? Sorry, I'm a complete noob with astronomy.Apparently they'll use the impact site to measure the estimated size of the object in the next few weeks? Edited September 11, 2012 by Hellmutt Quote Link to comment Share on other sites More sharing options...
Gump Posted September 11, 2012 Report Share Posted September 11, 2012 Wasn't the huge crater that killed the dinosaurs caused by a meteor around 50 yards wide? It was on National Geographic last night. 1/2 mile wide would hurt. Quote Link to comment Share on other sites More sharing options...
buildit Posted September 11, 2012 Report Share Posted September 11, 2012 Something to think about is Jupiters atmosphere. 1. it is thousands of miles deep and made of some flammable gasses 2. when an asteroid goes thru our thin atmosphere most burn up. So chances seem likely a fire ball would indicate a high velocity entry vector resulting in it flaming on entry and maybe igniting atmospheric gasses. The large comet impacts years ago did not ignite gasses and instead caused atmospheric disturbances as they sank thru the gas giants outer layers. I've often heard two things about Jupiter. One it is a giant cleaner upper of asteroids and space debris and that it is a failed sun. It never reached mass to cause ignition of the trapped gasses. Quote Link to comment Share on other sites More sharing options...
Gixxus Christ! Posted September 11, 2012 Report Share Posted September 11, 2012 Ah Jupiter, the vacuum cleaner of the solar system. We owe our planet's continued existance to the countless objects Jupiter's enormous gravitational pull has sucked in...best wingman ever. 1 Quote Link to comment Share on other sites More sharing options...
NinjaNick Posted September 11, 2012 Report Share Posted September 11, 2012 (edited) Ah Jupiter, the vacuum cleaner of the solar system. We owe our planet's continued existance to the countless objects Jupiter's enormous gravitational pull has sucked in...best wingman ever.Smart, but yet funny post. Wingman comment gets +rep for making me chuckle. Edited September 11, 2012 by NinjaNick Quote Link to comment Share on other sites More sharing options...
Gixxus Christ! Posted September 12, 2012 Report Share Posted September 12, 2012 Thanks bud. Quote Link to comment Share on other sites More sharing options...
ReconRat Posted September 12, 2012 Author Report Share Posted September 12, 2012 Yeah....big asteroid hitting the Earth...Unlike the movies, where something slowly burns it's way down to the ground and people run away screaming...An incoming object could easily be doing mach 6 or greater, which would look more like a very wide laser beam shooting into the ground. The slow part, would be the shock wave traveling through the air, water, and ground coming toward your location. Yeah, slow... supersonic and capable of grinding up AND burning everything it hits.Water in an ocean hit by something like that, would not only vaporize, it would burn. So the shock wave would move as a very hot flame front, even igniting the air itself. Only going out as it ran out of oxygen taken from the air, ground, and water.The shock wave in the ground, like an earthquake, could be upwards of a 12 on the earthquake Richter scale. That would pulverize the ground and everything on the ground down to a depth of many feet, clear around the world. Twice or more. Quote Link to comment Share on other sites More sharing options...
ReconRat Posted September 12, 2012 Author Report Share Posted September 12, 2012 ...Io's 1.13 arc sec in diameter? What is an arc sec?...Minute of arc from Wikipedia60 arcminute = 1 degree60 arcsecond - 1 arcminuteso, 1 arc second = 1/60 of 1/60 of 1/360 of the full circle of the sky horizon.or 4.8481368 µrad Quote Link to comment Share on other sites More sharing options...
Gixxus Christ! Posted September 12, 2012 Report Share Posted September 12, 2012 Yeah recon, I always saw that as a glaring inaccuracy in the disaster movies. If it were night time you would see either a dot getting bigger in a hurry or a very fast bright streak depending on your POV in relation to the origin and trajectory of the object. Daytime you'd have even less warning depending on the percieved proximity of the object to the sun. Either way you'd be fucked....propper fucked. I've seen some projections that show the earth actually bulging out at the point diametrically opposed to the point of impact depending on the size of the object.....Damn, that's the most big words I've used in a single post I think.... Quote Link to comment Share on other sites More sharing options...
Helmutt Posted September 12, 2012 Report Share Posted September 12, 2012 Minute of arc from Wikipedia60 arcminute = 1 degree60 arcsecond - 1 arcminuteso, 1 arc second = 1/60 of 1/60 of 1/360 of the full circle of the sky horizon.or 4.8481368 µradEnglish please? I'm an extremely out of practice ex-engineer, so my math skills have been reduced back to that of checkbook balances, micrometers, and tape measurement:D Quote Link to comment Share on other sites More sharing options...
kawi kid Posted September 12, 2012 Report Share Posted September 12, 2012 Astronomy is fun. Quote Link to comment Share on other sites More sharing options...
4DAIVI PAI2K5 Posted September 12, 2012 Report Share Posted September 12, 2012 Astronomy is fun.Your sisters' anatomy is fun. Quote Link to comment Share on other sites More sharing options...
kawi kid Posted September 12, 2012 Report Share Posted September 12, 2012 I'm going to break your kids toys. Quote Link to comment Share on other sites More sharing options...
4DAIVI PAI2K5 Posted September 12, 2012 Report Share Posted September 12, 2012 Better be carefully, he now throws the grenades and screams bang as he launches them lol. Quote Link to comment Share on other sites More sharing options...
kawi kid Posted September 12, 2012 Report Share Posted September 12, 2012 awesome Quote Link to comment Share on other sites More sharing options...
Tpoppa Posted September 12, 2012 Report Share Posted September 12, 2012 I hope all the disaster preppers living on jupiter have enough guns and ammo to get through this. 1 Quote Link to comment Share on other sites More sharing options...
4DAIVI PAI2K5 Posted September 12, 2012 Report Share Posted September 12, 2012 awesomeI'll post a pic of his get up in a few lol. Makes dad proud Quote Link to comment Share on other sites More sharing options...
ReconRat Posted September 13, 2012 Author Report Share Posted September 13, 2012 English please? I'm an extremely out of practice ex-engineer, so my math skills have been reduced back to that of checkbook balances, micrometers, and tape measurement:Doh geez, I thought that was English and simplified...ok, here... this is surprisingly accurate when you hold your hand out:- Stretch your thumb and little finger as far from each other as you can. The span from tip to tip is about 25 degrees- Do the same with your index finger and little finger. The span is 15 degrees- Clench your fist at arms length, and hold it with the back of your hand facing you. The width is 10 degrees- Hold your three middle fingers together; they span about 5 degrees- The width of your little finger at arms length is 1 degree.so an arc second would be 1/3600 of the width that little finger.Or basically something we just can't see with the naked eye.A good optical telescope in steady skies can resolve down to about 1″ (one arcsecond).From One Minute Astronomer - Measuring The Sky Quote Link to comment Share on other sites More sharing options...
Helmutt Posted September 13, 2012 Report Share Posted September 13, 2012 oh geez, I thought that was English and simplified...ok, here... this is surprisingly accurate when you hold your hand out:- Stretch your thumb and little finger as far from each other as you can. The span from tip to tip is about 25 degrees- Do the same with your index finger and little finger. The span is 15 degrees- Clench your fist at arms length, and hold it with the back of your hand facing you. The width is 10 degrees- Hold your three middle fingers together; they span about 5 degrees- The width of your little finger at arms length is 1 degree.so an arc second would be 1/3600 of the width that little finger.Or basically something we just can't see with the naked eye.A good optical telescope in steady skies can resolve down to about 1″ (one arcsecond).From One Minute Astronomer - Measuring The SkyThanks man, that helps me wrap my head around it. Sometimes, layman's terms are still neccessary Quote Link to comment Share on other sites More sharing options...
psyco1 Posted September 15, 2012 Report Share Posted September 15, 2012 Wasn't the huge crater that killed the dinosaurs caused by a meteor around 50 yards wide? It was on National Geographic last night. 1/2 mile wide would hurt."The impactor had an estimated diameter of 10 km (6.2 mi) and delivered an estimated energy equivalent of 100 teratons of TNT "http://en.wikipedia.org/wiki/Chicxulub_craterFucking Teratons, damn. Quote Link to comment Share on other sites More sharing options...
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