I posted the following message to sci.astro.amateur a couple of weeks ago and got no response (big surprise, s.a.a is a cesspool these days), so I thought I'd...

"Cities of Babylon" refers to China. From January 2007 to 2008 in October on Radio Free Asia, I am forced China to become a country ruled by law, I half-way to...

Hi everybody, maybe my questions are OT, but I hope someone can help me. I started intersting about satellites a few time ago, so there are many things I would...

hi, (excuse me for my bad english, i'm italian :-) ) i'm looking for SGP4 information, also for SDP4 .. who can explain me what are SGP4 and SDP4 (used for...

As much as I am disdained at public postings of this nature on news groups, they do tend to serve as a focused group for this particular...

Hello As I feel that it's a very worthwhile directive and a great idea, I've posted below an invitation from Peter Lynds to have your name listed "in support...

I've started looking out for Iridium flares. I've noticed two things. They don't always flare at the apponted time. Also their flares appear to be restricted...

Last night my wife and I unexpectedly observed an Iridium flare from my back yard, which I estimated reached a maximum magnitude of about -6. When I later...

From my location in North Orange County, CA, I observed Iridium 80 flare as it approached the moon. I have an image in the Astronomy section on my website, URL...

Has anyone observed an Iridium flare crossing the Moon? It would obviously be very rare from a given location but it could presumably be predicted in the same...

To see an Iridium flair, how close does on have to be to the track? Does one have to be right under the track or can one be a few miles away and still see...

Hi, i'd like to invite those interested in Iridium to join our discussion-group where we currently look at the possibilties of receiving and decoding Iridium...

On the evening of August 21 (2047 CDT, which would be 0147 UT on the 22nd), I noted three bright, slow, and irregular flares from an object moving northward...

Hello everyone, Considering it's inflatable and has solar panels, is it large enough (15' length, 12' diameter) to be seen with naked eye? Thanks! D~

I watched Nimbus 7 make a pass over a week ago, and it seemed to brighten and fade, then brighten again before it entered Earth's shadow. I wasn't able to...

I just spotted Nimbus 7 (78098A) in clear skies. For most of the pass it was just visible in 10x50 binoculars, but about once every fifteen seconds it it...

I've been trying to find recent updates on the starshine 4 and 5 satellites (for my daughter) and the most recent information I've found was a launch...

A nice photo of the ISS together with Lyra constellation

Last night I had a chance to see an evening pass of ISS/Space Shuttle. Serendipity and a 15 minute heads-up was all it took on my part. "Heavens Above" web...

Does anybody know if (free!) software is available which could be used to calculate when the ISS is visible in front of (i.e. hiding) the sun or the moon, as...