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Local Configuration
Ashburn
Lat:  39.0437  Lon:  -77.4875  Alt:  500
Timezone:   UTC-4   [ Change ]
Next Pass: Day
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AOS:  xx:xx   AZ: 00°
LOS:   xx:xx   AZ: xx°
MAX:  EL 00° / AZ 00°
Distância:   xxxx Km
CONTACT:
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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

IRIDIUM 90 [-]
Next 5 days above your City
Tabela de Passagem

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Forecast for IRIDIUM 90 [-] Reentry
Update Thu 18-Oct-2018 7:10 UTC

The map above shows the location of the possible reentry of the space junk IRIDIUM 90 [-] (27373U) predicted by modeling of orbital evolution until the fragment or satellite reaches the altitude of nominal burst.

According to the forecast made by Satview.org, the object's reentry will occur in Tuesday, 15 Jan 2019 at 15:12 UTC, above the coordinates shown on map.

The second map shows the location of the reentry like predicted by USstratcom (United States Strategic Command).

SPACEJUNK - NEXT REENTRIES
IRIDIUM 20 [-]
21 Oct 14h37

track
IRIDIUM 11 [-]
22 Oct 11h49

track
FALCON 9 R/B
24 Oct 18h11

track
FLOCK 2E'-14
25 Oct 20h27

track
SPACEJUNK - LAST REENTRIES


Details
ICECUBE
03 Oct 03h53
Details
LEMUR-2-AUSTINTACIOUS
04 Oct 02h21
Details
WASEDA-SAT3
06 Oct 07h01
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: 18 Oct 2018 13:59 (2018 291.58301461)

IRIDIUM 90 [-]
1 27373U 02005B 18291.58301461 .00149654 49606-5 51126-3 0 9995
2 27373 86.4220 129.5661 0195626 213.7016 145.1692 15.65617932883995

Launch.: 2002 (5° from year, payload B)
Period: 92 min.
Revs/day: 15.7
Incl.: 86.4 degrees
Apogee: 373 km
Perigee: 373 km
Semi-major axis: 6751 km
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