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Local Configuration
Ashburn
Lat:  39.0437  Lon:  -77.4875  Alt:  500
Timezone:   UTC-4   [ Change ]
Next Pass: Day
xx

AOS:  xx:xx   AZ: 00°
LOS:   xx:xx   AZ: xx°
MAX:  EL 00° / AZ 00°
Distância:   xxxx Km
CONTACT:
None
LIGHTSAIL-1 - TRACK AND SEE THE SOLAR SAIL EXPERIMENT

LIGHTSAIL-1 will deploy the sail in 03 june 2015, becoming visible at dusk and dawn.
Now, the spacecraft can be tunned in 437.435 MHz, sendind FSK packets in AX.25 protocol

ARIANE 5 R/B
Next 5 days above your City
Tabela de Passagem

SPACEJUNK - NEXT REENTRIES
IRIDIUM 30 [-]
28 Sep 15h18

track
FLOCK 2E'-7
05 Oct 16h28

track
GSLV R/B
08 Oct 11h43

track
TANCREDO-1
19 Oct 10h19

track
SPACEJUNK - LAST REENTRIES
DRAGON CRS-12
17 Sep 15h47
Details
NODES 2
19 Sep 12h22
Details
IRIDIUM 77 [-]
22 Sep 01h39
Details
NODES 1
23 Sep 08h33
Details

How to Track Satellites

To track a satellite it is necessary to choose one. That is made by clicking directly on the satellite available on the "Great Visibility" column or after clicking on some of the categories. Once chosen, after a few seconds the program will begin the track the satellite.

Important
Make sure that the computer clock is correct and the time zone is compatible with your Region. On the Internet there are dozens of programs that keep your computer always on time.

On the main screen we can see the World map, where the satellite in movement stands out by two outlined lines. These lines are called "GroundTrack". The red line shows the first 90 minutes of the current orbit and the blue line, the 90 following minutes. Each point represents the position of the satellite at each minute and gets the name of the sub-satellite Point.

On the blue screen, right the map, we have the parameters panel, updated every second, which is divided in three main areas, as shown below.

Visibility conditions

For a satellite can be observed directly, it is necessary that the sunshine reaches its structure and is reflected into our eyes. For that to take place, it is necessary that the following factors are present at the same time:

1 - Dark sky: it should be night on the observation location
2 - The Sun's height: the solar disk should be between 10 and 25 degrees below the line of the horizon
3 - Illuminated satellite: the sun rays should be reaching the satellite directly
4 - The elevation angle: the satellite should be at least 25 degrees above the horizon

When these four conditions are achieved, we say that the satellite will be potentially visible during its passage over our station. Meaning that technically, it can be seen, nevertheless other factors can influence its observation, among them the satellite's altitude and size, its coating material and the atmospheric conditions of the local observation.

As a general rule, the closer the satellite passes over our station, the better the observation will be. That closer approach is directly related to the height of the satellite above the horizon line. The angle formed between the satellite and this line is called the elevation angle and the bigger this angle is, the closer to us the satellite will be.

The apex of that approach takes place when the satellite is exactly over the zenith, in other words, 90 degrees above the horizon, but not all the passages effectively reach that position.



Orbital Elements: 25 Sep 2017 15:30 (2017 268.64639669)

ARIANE 5 R/B
1 33057U 08030C 17268.64639669 +.00000961 +00000-0 +49822-3 0 9996
2 33057 001.8592 028.3101 7153404 219.8867 055.5304 02.42759254079889

Launch.: 2008 (30° from year, payload C)
Period: 593.2 min.
Revs/day: 2.4
Incl.: 1.9 degrees
Apogee: 17008 km
Perigee: 17008 km
Semi-major axis: 23386 km
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