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Hello,
This isn't really a question on astronomy, so please feel free to ingore me, or please point me elsewhere. I was outdoors last night (Weds 23/July) to watch the ISS go over (due at about 22:40 or thereabouts). It normally flies West - East (approx) and looks a bit like a bright, fast-moving star. About 10 minutes before the ISS was due I saw a very bright red/orange object travelling in the opposite direction, ie east-west (approx). It was much brighter than the ISS, and much faster. I assume it was a satellite in a lower orbit, and that the red/orange colour was the reflection of the setting sun. At least I hope it was, else I will have to assume that little grey aliens are here after all !! Does anyone know what it was ? Is there a website out there which lists these things ? (I have Googled around a bit & couldn't find anything very helpful) Thanks KK PS I'm in Gloucestershire , UK |
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dido22 typed:
Hello, This isn't really a question on astronomy, so please feel free to ingore me, or please point me elsewhere. I was outdoors last night (Weds 23/July) to watch the ISS go over (due at about 22:40 or thereabouts). It normally flies West - East (approx) and looks a bit like a bright, fast-moving star. About 10 minutes before the ISS was due I saw a very bright red/orange object travelling in the opposite direction, ie east-west (approx). It was much brighter than the ISS, and much faster. I assume it was a satellite in a lower orbit, and that the red/orange colour was the reflection of the setting sun. At least I hope it was, else I will have to assume that little grey aliens are here after all !! Does anyone know what it was ? We, couple of friends and I, all of whom are light aircraft pilots, discussed this just last week and concluded that lots of 'sightings' like this are down to far more mundane things. People seeing, for instance, a balloon at a much lower altitude than they think which, because it moves so quickly across their vision but isn't as high as they think, appears to move extremely, unexplainably even, fast. I'd guess your sighting could easily be something like this, maybe a small plane, maybe a balloon, maybe a firefly only a few feet away. Your eyes and mind are attuned to ISS, reality can be anywhere from ground level upwards. ![]() -- Daul P. http://www.glass-uk.org/ "You would probably do better not to bother with renewable energy" Doug, UK.Transport 29/04/2008 08:53. |
#3
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In article , dido22 wrote:
About 10 minutes before the ISS was due I saw a very bright red/orange object travelling in the opposite direction, ie east-west (approx). It was much brighter than the ISS, and much faster. I assume it was a satellite in a lower orbit, and that the red/orange colour was the reflection of the setting sun. For the setting sun to affect its colour it would have to be in the atmosphere, or at least the light would have to be passing through a substantial amount of the atmosphere for the duration of it pass. Are you sure it wasn't a plane? -- Richard -- Please remember to mention me / in tapes you leave behind. |
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Hello again,,
Thanks for the ideas, but.. It was far too fast for a plane, it crossed from east horizon to west horizon in just a few minutes, and there was no noise so it could not have been flying low. A low balloon, OK, there was no wind at ground level, but maybe there was wind at a higher level. Does the jet stream blow east-west or west-east ? Firefly, no , unless fireflies fly at constant speed in a constant direction for several minutes. It would have to be within the atmosphere for the setting sun to make it red/orange, Richard thanks.. This points to a balloon again, but it was astonishingly fast. I do not for one minute believe in aliens etc, this was a natural phenomenon, but what I saw does help to explain why so many people do believe in such things. Incidentally, my neighbour saw it as well, so I wasn't dreaming. Thanks again K "dido22" wrote in message ... Hello, This isn't really a question on astronomy, so please feel free to ingore me, or please point me elsewhere. I was outdoors last night (Weds 23/July) to watch the ISS go over (due at about 22:40 or thereabouts). It normally flies West - East (approx) and looks a bit like a bright, fast-moving star. About 10 minutes before the ISS was due I saw a very bright red/orange object travelling in the opposite direction, ie east-west (approx). It was much brighter than the ISS, and much faster. I assume it was a satellite in a lower orbit, and that the red/orange colour was the reflection of the setting sun. At least I hope it was, else I will have to assume that little grey aliens are here after all !! Does anyone know what it was ? Is there a website out there which lists these things ? (I have Googled around a bit & couldn't find anything very helpful) Thanks KK PS I'm in Gloucestershire , UK |
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Wasn't it dido22 who wrote:
Hello, This isn't really a question on astronomy, so please feel free to ingore me, or please point me elsewhere. I was outdoors last night (Weds 23/July) to watch the ISS go over (due at about 22:40 or thereabouts). It normally flies West - East (approx) and looks a bit like a bright, fast-moving star. About 10 minutes before the ISS was due I saw a very bright red/orange object travelling in the opposite direction, ie east-west (approx). It was much brighter than the ISS, and much faster. I assume it was a satellite in a lower orbit, and that the red/orange colour was the reflection of the setting sun. The ISS is in Low Earth Orbit. Anything sufficiently lower than that for the speed difference to be obvious would not be in a stable orbit. The ISS is by far the biggest satellite. Anything significantly brighter than that would probably be quite large, and we'd know about anything like that. It's extremely rare for satellites to travel east-west because it's less efficient. You lose the push that you get from taking off from a revolving Earth. There'd have to be a pretty good reason to spend the extra energy to put a satellite into such an orbit, and I can't think of any. I've never seen a reddened satellite. The geometry of atmosphere and orbit prevents satellites being reddened by the setting sun for more than a fraction of a second, just as they cross into the Earth's shadow. To be continuously reddened due to the sunset, it would need to be inside the atmosphere. -- Mike Williams Gentleman of Leisure |
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![]() Hi, i saw that too - i was out looking for the Early Ammonia Servicer space junk, which was scheduled at 10:39 (but the EAS was much fainter). The IIS did not transit till later though, and this was too bright for any of the other satellites - also it was not a point - i am sure it was a high altitude plane - I could hear a faint aircraft noise. Callum Tewkesbury, UK On Jul 24, 1:46 pm, "dido22" wrote: Hello again,, Thanks for the ideas, but.. It was far too fast for a plane, it crossed from east horizon to west horizon in just a few minutes, and there was no noise so it could not have been flying low. A low balloon, OK, there was no wind at ground level, but maybe there was wind at a higher level. Does the jet stream blow east-west or west-east ? Firefly, no , unless fireflies fly at constant speed in a constant direction for several minutes. It would have to be within the atmosphere for the setting sun to make it red/orange, Richard thanks.. This points to a balloon again, but it was astonishingly fast. I do not for one minute believe in aliens etc, this was a natural phenomenon, but what I saw does help to explain why so many people do believe in such things. Incidentally, my neighbour saw it as well, so I wasn't dreaming. Thanks again K "dido22" wrote in message ... Hello, This isn't really a question on astronomy, so please feel free to ingore me, or please point me elsewhere. I was outdoors last night (Weds 23/July) to watch the ISS go over (due at about 22:40 or thereabouts). It normally flies West - East (approx) and looks a bit like a bright, fast-moving star. About 10 minutes before the ISS was due I saw a very bright red/orange object travelling in the opposite direction, ie east-west (approx). It was much brighter than the ISS, and much faster. I assume it was a satellite in a lower orbit, and that the red/orange colour was the reflection of the setting sun. At least I hope it was, else I will have to assume that little grey aliens are here after all !! Does anyone know what it was ? Is there a website out there which lists these things ? (I have Googled around a bit & couldn't find anything very helpful) Thanks KK PS I'm in Gloucestershire , UK |
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In uk.sci.astronomy message , Thu,
24 Jul 2008 16:03:45, Mike Williams posted: It's extremely rare for satellites to travel east-west because it's less efficient. You lose the push that you get from taking off from a revolving Earth. There'd have to be a pretty good reason to spend the extra energy to put a satellite into such an orbit, and I can't think of any. Consider launching from Israel. See http://en.wikipedia.org/wiki/Ofeq. -- (c) John Stockton, nr London, UK. Turnpike v6.05 MIME. Web URL:http://www.merlyn.demon.co.uk/ - FAQqish topics, acronyms & links; Astro stuff via astron-1.htm, gravity0.htm ; quotings.htm, pascal.htm, etc. No Encoding. Quotes before replies. Snip well. Write clearly. Don't Mail News. |
#8
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hello,
Nice to know it's not only me & my neighbour. I have been tending towards an aeroplane myself over the past few hours. I assume is was so bright red/orange because it just happened to be in the best position to reflect the setting sun. K wrote in message ... Hi, i saw that too - i was out looking for the Early Ammonia Servicer space junk, which was scheduled at 10:39 (but the EAS was much fainter). The IIS did not transit till later though, and this was too bright for any of the other satellites - also it was not a point - i am sure it was a high altitude plane - I could hear a faint aircraft noise. Callum Tewkesbury, UK On Jul 24, 1:46 pm, "dido22" wrote: Hello again,, Thanks for the ideas, but.. It was far too fast for a plane, it crossed from east horizon to west horizon in just a few minutes, and there was no noise so it could not have been flying low. A low balloon, OK, there was no wind at ground level, but maybe there was wind at a higher level. Does the jet stream blow east-west or west-east ? Firefly, no , unless fireflies fly at constant speed in a constant direction for several minutes. It would have to be within the atmosphere for the setting sun to make it red/orange, Richard thanks.. This points to a balloon again, but it was astonishingly fast. I do not for one minute believe in aliens etc, this was a natural phenomenon, but what I saw does help to explain why so many people do believe in such things. Incidentally, my neighbour saw it as well, so I wasn't dreaming. Thanks again K "dido22" wrote in message ... Hello, This isn't really a question on astronomy, so please feel free to ingore me, or please point me elsewhere. I was outdoors last night (Weds 23/July) to watch the ISS go over (due at about 22:40 or thereabouts). It normally flies West - East (approx) and looks a bit like a bright, fast-moving star. About 10 minutes before the ISS was due I saw a very bright red/orange object travelling in the opposite direction, ie east-west (approx). It was much brighter than the ISS, and much faster. I assume it was a satellite in a lower orbit, and that the red/orange colour was the reflection of the setting sun. At least I hope it was, else I will have to assume that little grey aliens are here after all !! Does anyone know what it was ? Is there a website out there which lists these things ? (I have Googled around a bit & couldn't find anything very helpful) Thanks KK PS I'm in Gloucestershire , UK |
#9
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Never assume that an aircraft will be audible. They often aren't.
Even when you'd think they should be. Aircraft can make brilliant, often dazzling reflections in wonderful shades of gold to deep orange (in the evening) regardless of their angle to you or the sun or their distance. The brilliance often inflates the apparent size of the object seen. This can occur even when you think the sun has set and the aircraft is very low in the east. This happened to me only a month or so ago. I was (almost) convinced my sighting was a real UFO. Then I repeated exactly the same observation the following evening and the next at the same local time (10pm). I am often surprised how bright aircraft can appear to the naked eye. Normally airliners can be recognised for what they are even at very high altitiudes.Though they don't always drag a vapour trail they are usually visible as a tiny cross thanks to their considerable real size. Presumably most military aircraft have low albedo coatings to avoid such brilliant reflections. |
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