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The space junk FLOCK 1E-3 is forecast to reentry Sunday, 29 May 2016 at 22:37 UTC +/- 8 hours
FLOCK 1E-3

Forecast of Reentry Location


Update Tue 24-May-2016 22:09 UTC

The map above shows the location of the possible reentry of the space junk FLOCK 1E-3 (40725U) 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 Sunday, 29 May 2016 at 22:37 UTC, above the coordinates shown on map.

Satellite Launch Norad Incl.
degrees
Apogee
Km
Perigee
Km
Period
min
Options
SL-4 R/B
Reentry: (YMD) 2016-04-30
201641467U97º15113787Reentered!
Lat=-25   Lon=8
SL-3 R/B
Reentry: (YMD) 2016-05-13
198011849U98º14713587Reentered!
Lat=-36   Lon=284
CZ-3B R/B
Reentry: (YMD) 2016-05-14
201541104U27º115110697Reentered!
Lat=26   Lon=351
FLOCK 1E-3
Reentry: (YMD) 2016-05-29
199840725U52º25824089Forecast
FLOCK 1E-5
Reentry: (YMD) 2016-06-26
199840728U52º29928590Forecast
CZ-3B R/B
Reentry: (YMD) 2016-06-27
201541035U18º8875117188Forecast
CZ-2C R/B
Reentry: (YMD) 2016-06-29
201239000U97º27627290Forecast
FLOCK 1E-4
Reentry: (YMD) 2016-07-1
199840724U52º28827590Forecast
FLOCK 1E-8
Reentry: (YMD) 2016-07-8
199840727U52º29327990Forecast
FLOCK 1E-7
Reentry: (YMD) 2016-07-16
199840726U52º31230291Forecast
FLOCK 1E-6
Reentry: (YMD) 2016-08-3
199840729U52º30529391Forecast
FLOCK 1E-14
Reentry: (YMD) 2016-08-7
199840741U52º31230191Forecast
FLOCK 1E-12
Reentry: (YMD) 2016-08-14
199840739U52º31530491Forecast
FLOCK 1E-11
Reentry: (YMD) 2016-08-15
199840738U52º31230491Forecast
SL-4 R/B
Reentry: (YMD) 2016-08-16
201641387U97º39827091Forecast
FLOCK 1E-10
Reentry: (YMD) 2016-08-26
199840737U52º31830891Forecast
GOMX 3
Reentry: (YMD) 2016-09-5
199840949U52º34133691Forecast
FLOCK 1E-13
Reentry: (YMD) 2016-09-8
199840740U52º31931091Forecast
DELTA 2 R/B(2) (PAM-D)
Reentry: (YMD) 2016-09-11
200327706U39º1488184102Forecast
FLOCK 2B-6
Reentry: (YMD) 2016-09-12
199840955U52º32932391Forecast
ARIANE 44L R/B
Reentry: (YMD) 2016-09-25
199020874U9196137193Forecast
FLOCK 2B-14
Reentry: (YMD) 2016-09-27
199840980U52º33132691Forecast
FLOCK 2B-7
Reentry: (YMD) 2016-10-17
199840956U52º33432991Forecast
SL-6 R/B(2)
Reentry: (YMD) 2016-10-22
199724963U62º6957113164Forecast
FLOCK 2B-5
Reentry: (YMD) 2016-11-6
199840954U52º33833191Forecast
FLOCK 2B-1
Reentry: (YMD) 2016-11-10
199840950U52º33733491Forecast
FLOCK 2B-2
Reentry: (YMD) 2016-11-12
199840951U52º33833491Forecast
AVUM R/B
Reentry: (YMD) 2016-11-21
201238086U69º51223592Forecast
FLOCK 2B-10
Reentry: (YMD) 2016-11-22
199840962U52º34233891Forecast
FLOCK 2B-4
Reentry: (YMD) 2016-11-27
199840953U52º34433991Forecast
FLOCK 2B-3
Reentry: (YMD) 2016-12-2
199840952U52º34233791Forecast
FLOCK 2B-9
Reentry: (YMD) 2016-12-2
199840963U52º34233991Forecast




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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