It's slowing down fast
58203 ISS DEB 1998-067WB DEBRIS USA 1998-11-20 TTMTR 92.26 51.64 394 376
Yeah, something's weird about the data for VZ (reportedly the Parus nanosat), WA, and WB. VZ is descending faster than you'd expect for a 1U CubeSat (SMA from ISS's 417 km down to 377 km in 11 days since deployment on Oct 25), while WA hasn't descended much at all (SMA down to 414 km), and WB's first data point (from just 2 hours after the bag was lost) has it at an SMA of 392 km. Seems likely that some of those data points are mis-assigned.
It's slowing down fast
58203 ISS DEB 1998-067WB DEBRIS USA 1998-11-20 TTMTR 92.26 51.64 394 376
Yeah, something's weird about the data for VZ (reportedly the Parus nanosat), WA, and WB. VZ is descending faster than you'd expect for a 1U CubeSat (SMA from ISS's 417 km down to 377 km in 11 days since deployment on Oct 25), while WA hasn't descended much at all (SMA down to 414 km), and WB's first data point (from just 2 hours after the bag was lost) has it at an SMA of 392 km. Seems likely that some of those data points are mis-assigned.
58203 ISS DEB 1998-067WB DEBRIS US 1998-11-20 TTMTR 92.17 51.64 390 372
Well that makes more sense:
https://twitter.com/planet4589/status/1721282347805393330The crew lock bag that floated free during the Nov 1 EVA-89 spacewalk has been cataloged as 58229 / 1998-067WC in a 415 x 416 km orbit
Then WB and VZ, which have similar orbital data (descending to around 370 km already) are probably the two towel bundles from VKD-61, and WA, descending quite a bit more slowly (currently 413 km SMA) must be the Parus nanosatellite.
Well that makes more sense:
https://twitter.com/planet4589/status/1721282347805393330
The crew lock bag that floated free during the Nov 1 EVA-89 spacewalk has been cataloged as 58229 / 1998-067WC in a 415 x 416 km orbit
Then WB and VZ, which have similar orbital data (descending to around 370 km already) are probably the two towel bundles from VKD-61, and WA, descending quite a bit more slowly (currently 413 km SMA) must be the Parus nanosatellite.
1998-067WC still has not appeared on the Space-track.org website...
....or even postponed if there's a risk of ammonia flying around?
Do we know the coolant fluid is ammonia?
It is not.
Yeah, after the latest VKD this much was proven
It was shown to be a clear liquid of low viscosity with no particular tendency to boil/sublimate easily in vacuum, or subject to rapid expansion leading to major freezing once released. This can correspond to oils, silicones, some kind of refined solvants... Do we then know if it's common heritage with the silicone oil or benzene-like substances employed in the coolant loop of Soyuz and Progress?
Well that makes more sense:
https://twitter.com/planet4589/status/1721282347805393330
The crew lock bag that floated free during the Nov 1 EVA-89 spacewalk has been cataloged as 58229 / 1998-067WC in a 415 x 416 km orbit
Then WB and VZ, which have similar orbital data (descending to around 370 km already) are probably the two towel bundles from VKD-61, and WA, descending quite a bit more slowly (currently 413 km SMA) must be the Parus nanosatellite.
1998-067WC still has not appeared on the Space-track.org website...
Now on Space-Track.org and descending
58229 ISS DEBRIS 1998-067WC DEBRIS US 1998-11-20 TTMTR 92.84 51.64 415 413
How many tool bags have been accidentally “dropped overboard” over the years?
I remember another incident years ago, and during a press conference someone asked if a Manned Maneuvering Unit could be used to retrieve it before it got to far away. Have there been only 2 incidents, or have there been others?
Checking up on the tool bag - it's descended about 10 km since it was lost, now at an SMA of 405 km per Celestrak.
How's the toolbag doing now?
How's the toolbag doing now?
It's currently in an orbit of 398.5 km by 392.9 km, so it's got a while to go.
Moghbeli's missing tool bag from EVA-89 reentered Earth's atmosphere yesterday, according to Celestrak.
It was shown to be a clear liquid of low viscosity with no particular tendency to boil/sublimate easily in vacuum, or subject to rapid expansion leading to major freezing once released. This can correspond to oils, silicones, some kind of refined solvants... Do we then know if it's common heritage with the silicone oil or benzene-like substances employed in the coolant loop of Soyuz and Progress?