Погоня в космосе?
Последние твиты Майкла Томпсона:
[QUOTE]The orbit for USA 245 now uses:
1. An orbit estimate from January 31st from [URL=https://twitter.com/HAMSATNL]@HAMSATNL[/URL]
2. An orbit estimate from January 20th posted by [URL=https://twitter.com/coastal8049]@coastal8049[/URL]
3. An orbit estimate from HAMSATNL from January 28th posted to his website.
The upd ated range between Cosmos 2542 and USA 245 is essentially the same as shown before up to the final state update on 1/28. Then, you see the range jump up to over 1000km. Still in view, but much further away. Cosmos 2542 didn't make a maneuver, so it looks like USA 245 did.
Some initial analysis estimates that USA 245 made its maneuver on January 23rd, just 1 day after Cosmos 2542 synchronized its period, but with sparse state estimates like these, it's hard to make a solid match on just one epoch.
But to sum it up, with the additional observations, we can see that Cosmos 2542 probably only was close to USA 245 for a few days at most before 245 made a maneuver to start to drift away.The orbits are still similar enough that they'll be in view of each other for at least a month, but at a much greater distance. Unless, of course, we see more maneuvers.[/QUOTE]
[QUOTE]Cosmos 2542 made another maneuver on January 31st and is now drifting back towards USA 245. Closest approach is currently se t for February 7-10. [/QUOTE]
[QUOTE]Kosmos-2542 passed within 20 km of USA 245 several times on Jan 22. The closest approach was about 13 km. Kosmos-2543 is making regular distant passes of USA 245 about every 4 days, to about 100 to 200 km.
It seems unlikely that this is coincidental, although I am open to counterarguments. It would appear that both Kosmos-2542 and 2543 (which were launched together) may be observing the US spy satellite, which was launched in 2013.
Kosmos-2542 distance to USA 245, Jan 2020[/QUOTE]
[QUOTE]Kosmos-2543 distance to USA 245, Jan 2020[/QUOTE]