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Local Configuration
Miami (USA)
Lat:  25.8  Lon:  -80.22  Alt:  5
Timezone:   UTC-3   [ Change ]
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AOS:  xx:xx   AZ: 00°
LOS:   xx:xx   AZ: xx°
MAX:  EL 00° / AZ 00°
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Live Bate-papo sobre reentradas de satélites na atmosfera
Live transmitida em 19 de setembro de 2020. Durante a live, o diretor do Apolo11, Rogério Leite, comentou sobre o processo de reentradas de satélites e sanou diversas dúvidas dos internautas através do SuperChat. Foi abordado o porque dos satélites reentrarem na atmosfera, como rastrear o lixo esp...

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Inscreva-se em nosso canal e pressione o sininho. Assim você ficará sabendo, com antecipação, quando houver novos programas ou transmissões ao vivo. Obrigado! :-)



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Forecast for STARLINK-1268 Reentry
Update Thu 22-Oct-2020 15:15 UTC

The map above shows the location of the possible reentry of the space junk STARLINK-1268 (45385U) 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 Friday, 11 Dec 2020 at 15:19 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
STARLINK-65
22 Oct 23h05

track
STARLINK-1157
23 Oct 21h40

track
FALCON 9 DEB
29 Oct 14h37

track
FALCON 9 DEB
08 Nov 08h36

track
SPACEJUNK - LAST REENTRIES
ATL-1
09 Oct 13h12
Details
ENDUROSAT ONE
15 Oct 14h14
Details
STARLINK-72
15 Oct 15h19
Details
SL-4 R/B
18 Oct 04h35
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: 21 Oct 2020 09:41 (2020 295.40388645)

STARLINK-1268
1 45385U 20019AB 20295.40388645 .00223996 00000-0 10680-2 0 9991
2 45385 53.0040 265.6114 0003715 83.3940 276.7503 15.81684509 34685

BD Usado: master_tle
Launch.: 2020 (19° from year, payload A)
Period: 91 min.
Revs/day: 15.8
Incl.: 53 degrees
Apogee: 324 km
Perigee: 324 km
Semi-major axis: 6702 km
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