While space ships travel through ... Bashny.Net

And what exactly they travel through? I propose to briefly break away from the lyrics of flying to other stars. Why not see what is flying over our heads literally in some 200-400 km. And how to do it now tell (experts remind).


Quite a bit of theory
Around the Earth spacecraft flying in an elliptical orbit, which has at least six parameters. Usually this Кеплеровы orbital elements . In the motion of the vehicle perturbs mass interference from the flattening of the Earth and ending ... I do not know what. Upon calculate position far ahead almost impossible.
Therefore, the position of each spacecraft periodically determine the tracking station. The data obtained is called "nachalkami" because from them you can start to build orbit, at least until the next measurement.
The most common data format TLE. Looks like this:

COSMOS 2503
1 40420U 15009A 15063.01107640 -.00000062 00000-0 + 00000 0 0 9997
2 40420 97.6230 22.9307 0015305 258.2480 187.6750 15.05052215 702

All starts, even secret military are required to register in the database of the United Nations at: www.unoosa.org/oosa
Who speak English can read the rules for registration. The most interesting thing here: www.unoosa.org/oosa/showSearch.do can find information on any piece of iron, throw in space, but not so much there and it.

Look into the sky

So we wonder what it flies. This will help us:
www.calsky.com/ here you can specify your location and see when and where over you proplyvёt ISS or Venus.
www.heavens-above.com/ similar, but almost russifitsirovat site.
If you are reading this at night, then it is time to break away from the monitor, and imagines himself to the ancient Greeks, fixed his gaze to the stars (you can with binoculars).
In principle, there are many interesting and I can retire. But why then talked about ballistics?
Suppose we are interested in the vital activity of a particular machine that is running a week ago.

We are looking for www.heavens-above.com/ link "Database satellites", choose the year of launch in 2015, we list:

The name of the serial number of the satellite status designations Name Spacetrack Orbit
40370 OBJECT A blown into the atmosphere 2015-001-A DRAGON CRS-5
40371 OBJECT B blown into the atmosphere 2015-001-B FALCON 9 R / B
40372 OBJECT C blown into the atmosphere 2015-001-C DRAGON CRS-5 DEB
40373 OBJECT D Burned in the atmosphere 2015-001-D DRAGON CRS-5 DEB
40374 MUOS 3 in Earth orbit 2015-002-A MUOS 3 5592 x 35788 km; 16, 7 ° Visible spans all spans of rapprochement with other objects
40375 ATLAS 5 CENTAUR R / B On Earth orbit 2015-002-B ATLAS 5 CENTAUR R / B 3742 x 35194 km; 18, 9 ° Visible spans all spans of rapprochement with other objects

We are interested in here is: 40420 OBJECT A low-Earth orbit 2015-009-A COSMOS 2503
link under More Starting Date (UTC) 27.02.2015
Where is our Barsik now?

Go celestrak.com/ further Current Data further Last 30 Days' Launches Total . We are looking for three lines mentioned me first post, store them in a file txt.
Next on the www.stoff.pl/ swing program Orbitron version 3.71 (too old, but it works even under eights). Establish open, Hit Download TLE, we put into our file and watch the topic of fasting (if not observe, verify the existence of a checkmark in the upper right COSMOS 2503).
Some objects, such as the ISS (ISS), is already loaded, you can display multiple.

A snack blog overseas colleagues planet4589.org/ come across interesting things, knowledge of the language is welcome.

Source: geektimes.ru/post/246782/