... Iridiums frequently flair to -8 magnitude, most are less bright but easy to see with the naked eye. The best way to get predictions is to log on with the...
Unless NASA changed their mind, there is a boost scheduled today. Here's a chart showing the ISS's height recently. It looks like they may be due for a fairly...
... Thanks for the idea. It's weird...... \ I had checked with Calsky and now Heavens Above, too. And the predictions don't match up at all. It should should...
... Oh Boy... The recent boost caused SpaceTrack TLEs to be off 30 degrees two days later. I heard the boost was to dodge a flying object which may be why it...
Heavens-Above is geared torward visual(brighter than mag 4.5), CalSky if set to astronomer mode will give you alot more data (and sats), and thats when i...
... Thank you so much for the info on tumblers - I had no idea about these. I need something to do to keep me busy between ISS passes....... ... We had a...
... It will show "phases" like the moon, and the phase angle will depend on the angle between the ISS and the sun, whether the sun is above the horizon or...
First attempt on generating a TLE for our Moon. Thought this might be good for SatelliteTracker training May get a better feel for your buttons, mouse or...
Hi All: In following some of the threads, it seems that guys are getting their TLE's from any of three different sources; Space Track, Cal Sky, or Heavens...
Earlier I posted that an orbit boost was scheduled for August 1. I made a comparison of the tle before the boost from Space Track and the predicted elements...
... I'm famous, the first link mentions my name! I still think this is a mystery. Norm refers to my November problem of TLEs being way off after a boost. He...
... I thought the article was a little odd, too. It says that the elements are updated more than once a day, when it actually took two or three days to update...
I think Space-Track has been updating 1 or more times daily Not sure how often the visual package is updated. Favorites always seem to contain the most recent....
... Hmmm. I didn't know about that feature. Thanks. I put in a query by range - here is when it updated 09210.15820020 09210.45114583 09210.84190236 ...
After the iss orbit is changed, the ISS has to pass across the tracking network, so the sensor's can get positional data, to update the data. After the launch...
... Thanks for all of the good information. Tell us more about these sensors. How do they work? You know, that would be a good article for Amateur Astronomy...
Are the normally released ISS elements derived from the regular tracking system used to catalog most orbiting material? I know that the ISS and other strategic...
... As mentioned in those messages, the space-track TLEs are based on actual observations, while the NASA predictions are predictions. The algorithm for...
Kevin is right about the tracking network, as i mentionned in one of my post earlier this year. When you do a Space-Trak query about the last 5 elsets you then...
Here is another fence description, along with the command that operates it... The other site in my earlier port was more oriented on its replacement ...
... Very interesting article Norm. "Lake Kickapoo, Texas, has an average power output of 766,800 watts feeding a two-mile long antenna array." I hope that is...
... The second link says: "Lake Kickapoo is the largest continuous wave (CW) transmitter in the world with an average radiated power of 766.8 KW and operates...
Another thing, just resolving the true crossing time of the beam center vs the beamwidth at that distance probably yield a certain uncertainty in the order of...
I'm still curious about the actual data source for the Space-Track TLEs for the ISS. The Fence system isn't terribly accurate- not accurate enough to be used...
From what i observed and heard about that, Space-Trak is the only source of official TLE and derived directly from the acquisition network. You have to get the...
I observed that the elements for the ISS are updated about 6 times per day at space-track. Apparently they use an math. model to get filtered orbit parameters,...
Space Track (i.e., USAF Space Command...used to be NORAD) is the source for most (if not all) of the TLEs out there...everybody else is simply redistributing...
***GEODSS system can track objects as small as a basketball more than 20,000 miles (30,000 km) in space or a chair at 35,000 miles, *** Just how many of those...
