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O lixo espacial IRIDIUM 90 [-] está previsto para reentrar Terça-feira, 29 Jan 2019 as 06:58 UTC +/- 8 hours
IRIDIUM 90 [-]

Previsão de Reentrada IRIDIUM 90 [-]


Atualizado Quinta-feira, 13 Dez 2018 14:11 UTC

O mapa acima mostra a possível localização da reentrada do lixo espacial IRIDIUM 90 [-] (27373U), previsto por modelagem de evolução orbital até que o satélite ou fragmento atinja a altura nominal de ruptura.

De acordo com a previsão, a reentrada do objeto ocorrerá Terça-feira, 29 Jan 2019 as 06:58 UTC, acima das coordenadas mostradas no mapa.

Satellite Launch Norad Incl.
degrees
Apogee
Km
Perigee
Km
Period
min
Options
SL-4 R/B
Reentry: (YMD) 2018-11-19
201843703U52º15914788Reentered!
Lat=30.1   Lon=41.5
ANTARES R/B
Reentry: (YMD) 2018-11-28
201843705U52º15814588Reentered!
Lat=49.3   Lon=42.9
SL-4 R/B
Reentry: (YMD) 2018-12-7
201843757U52º14513787Reentered!
Lat=-10.4   Lon=187.8
DRAGON CRS-16 DEB
Reentry: (YMD) 2018-12-11
201843828U52º18416388Reentered!
Lat=-25.8   Lon=222.1
IRIDIUM 31 [-]
Reentry: (YMD) 2018-12-19
199724950U86º53914991Reentered!
Lat=-82.3   Lon=208.9
IRIDIUM 35 [-]
Reentry: (YMD) 2018-12-20
199724966U86º66115493Reentered!
Lat=-82.9   Lon=17.8
HOOPOE
Reentry: (YMD) 2018-12-24
199842718U52º25324589Reentered!
Lat=-48.2   Lon=125.2
1998-067PS
Reentry: (YMD) 2018-12-30
199843847U52º40539793Reentered!
Forecast
ELECTRON R/B
Reentry: (YMD) 2018-12-30
201843691U85º35420090Reentered!
Lat=59.2   Lon=44.4
ITF-2
Reentry: (YMD) 2019-01-5
199841932U52º26726190Reentered!
Lat=13.6   Lon=319.8
PSLV R/B
Reentry: (YMD) 2019-01-21
201843129U97º26725890Reentered!
Lat=27.6   Lon=230.4
IRIDIUM 90 [-]
Reentry: (YMD) 2019-01-29
200227373U86º39022691Forecast
CZ-3B R/B
Reentry: (YMD) 2019-02-4
201641883U28º2311141110Forecast
X-CUBESAT
Reentry: (YMD) 2019-02-8
199842707U52º30129791Forecast
POLYITAN-2-SAU
Reentry: (YMD) 2019-02-9
199842732U52º30329891Forecast
ARIANE 44L R/B
Reentry: (YMD) 2019-02-16
199724715U6731134161Forecast
DEBRISSAT-1
Reentry: (YMD) 2019-02-22
199843621U52º37736292Forecast
QBEE50-LTU-OC
Reentry: (YMD) 2019-02-26
199842708U52º31330991Forecast
HAVELSAT
Reentry: (YMD) 2019-03-1
199842700U52º31330791Forecast
SPACECUBE
Reentry: (YMD) 2019-03-7
199842717U52º31430991Forecast
CXBN-2
Reentry: (YMD) 2019-03-8
199842704U52º31430991Forecast
SNUSAT-1B
Reentry: (YMD) 2019-03-18
199842733U52º32131491Forecast
ELECTRON R/B
Reentry: (YMD) 2019-03-19
201843166U83º36626291Forecast
OSIRIS-3U
Reentry: (YMD) 2019-03-19
199843027U52º33332891Forecast
LILACSAT-1
Reentry: (YMD) 2019-03-23
199842725U52º32732091Forecast
H-1 R/B(1)
Reentry: (YMD) 2019-04-2
198920230U28º1764173104Forecast
SILU-1 (SILKROAD 1)
Reentry: (YMD) 2019-04-11
201742903U43º33031091Forecast
SNUSAT-1
Reentry: (YMD) 2019-04-14
199842727U52º32832191Forecast
BEEAGLESAT
Reentry: (YMD) 2019-05-18
199842736U52º33432791Forecast
TOKI
Reentry: (YMD) 2019-05-20
199842820U52º33733291Forecast
CSUNSAT 1
Reentry: (YMD) 2019-05-24
199842715U52º33633191Forecast
BRAC ONNESHA
Reentry: (YMD) 2019-05-26
199842823U52º33933291Forecast
MAZAALAI (NUMSAT-1)
Reentry: (YMD) 2019-05-28
199842822U52º33933491Forecast
NIGERIAEDUSAT-1
Reentry: (YMD) 2019-05-31
199842824U52º34133391Forecast
SHARC
Reentry: (YMD) 2019-06-6
199842712U52º34634291Forecast
PHOENIX
Reentry: (YMD) 2019-06-11
199842706U52º33533291Forecast
ZA-AEROSAT
Reentry: (YMD) 2019-06-16
199842713U52º34033691Forecast
IRIDIUM 46 [-]
Reentry: (YMD) 2019-06-18
199724905U86º51325692Forecast




The Satellite Path


The path to be followed by satellite (dotted line) does not change due to the fact that the satellite is falling and can be used to assess the trajectory of the object before and after possible fall. In the graph, each point marks the range of 1 minute.

Solar Flux and Other Variables


As much as the institutes and space agencies strive to provide correct data of the point where the space debris will fall, several factors may interfere with the accuracy of the prediction. Among the most important, the solar flux is the most critical because it determines the conditions of the upper atmosphere, increasing or decreasing the drag on the object.

Besides the solar flux acting on the aerodynamic characteristics, another variable rather difficult to be computed is the resistance of materials used in the construction of the object and the shape of the structure. Combined, these factors may determine different altitudes for the moment of rupture, causing errors of more than 30 km in altitude reentry provided.

Other variables that affect the calculation of reentry, although less important, are the gravitational perturbations of the Sun and Moon and also those exercised by large mountain ranges, above or below sea level.

The modeling used by Satview to compute the time of reentry uses solar flux data obtained at the time of modeling, and prediction of the behavior of the sun for the next 5 days. With this, the margin of error of prediction is + / - 3 revolutions for satellites or debris in uncontrolled reentry.

Altitude of Reentry


Spacecraft reentering the atmosphere without control usually break between 72 and 84 km altitude due to temperature and aerodynamic forces acting on the structure.

The nominal breakup altitude is 78 km, but big satellites that have larger and denser structures survive longer and break down at lower altitudes. Usually, solar panels are destroyed before any component, at altitudes between 90 and 95 km.

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