Re-entry predictions for BY70-1
Greetings Joe!
space-track.org lists the decay epoch as 2017-02-22 0:00:00 -- note this is not strictly the re-entry time but perhaps gives us an approximate window?
I do not understand the material very well. It appears for large objects they will calculate a time-and-impact prediction as things become more certain but perhaps poor Bayi-Kepu-Weixing-1 may not rate as it doesn't pose a hazard.
I don't even know if it would be visible during re-entry given the speed?
When will we have a closer idea of when it may re-enter?
It would be neat to try to catch it on video.
Joe WB9SBD
Cool, well it won't be a bad idea that for starting a few days before to be outside waiting whenever an overhead pass was to happen.
Joe WB9SBD Sig The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 1/29/2017 10:07 AM, Todd Deckard wrote:
Greetings Joe!
space-track.org lists the decay epoch as 2017-02-22 0:00:00 -- note this is not strictly the re-entry time but perhaps gives us an approximate window?
I do not understand the material very well. It appears for large objects they will calculate a time-and-impact prediction as things become more certain but perhaps poor Bayi-Kepu-Weixing-1 may not rate as it doesn't pose a hazard.
I don't even know if it would be visible during re-entry given the speed?
When will we have a closer idea of when it may re-enter?
It would be neat to try to catch it on video.
Joe WB9SBD
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Todd and Joe,
Given that BY70-1 is a 2U cubesat measuring 10x10x20cm and weighing only a few kilograms (details here: https://amsat-uk.org/2016/12/27/by70-1-fm-transponder-satellite/), it will completely burn up upon reentry. When and where it will burn up, of course, depends on the orbital dynamics, atmospheric conditions (the sun's radiation affects the height of the top of the atmosphere), and the satellite cross-section. The eventual demise may be over one of the oceans or a cloudy region, with no one present or able to witness it.
Since BY70-1 is reported to have 3-axis stabilization, we may be able to enjoy its use right up to its fiery end. I have been trying to work BY70-1 as much as my other responsibilities will allow. I encourage all to do the same.
73,
Mac / AE5PH
On 01/29/2017 10:07 AM, Todd Deckard wrote:
Greetings Joe!
space-track.org lists the decay epoch as 2017-02-22 0:00:00 -- note this is not strictly the re-entry time but perhaps gives us an approximate window?
I do not understand the material very well. It appears for large objects they will calculate a time-and-impact prediction as things become more certain but perhaps poor Bayi-Kepu-Weixing-1 may not rate as it doesn't pose a hazard.
I don't even know if it would be visible during re-entry given the speed?
When will we have a closer idea of when it may re-enter?
It would be neat to try to catch it on video.
Joe WB9SBD
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
A unique meteor scatter opportunity!
73,
Ken VE3HLS
On 2017-01-29 5:51 PM, Mac A. Cody wrote:
Todd and Joe,
Given that BY70-1 is a 2U cubesat measuring 10x10x20cm and weighing only a few kilograms (details here: https://amsat-uk.org/2016/12/27/by70-1-fm-transponder-satellite/), it will completely burn up upon reentry. When and where it will burn up, of course, depends on the orbital dynamics, atmospheric conditions (the sun's radiation affects the height of the top of the atmosphere), and the satellite cross-section. The eventual demise may be over one of the oceans or a cloudy region, with no one present or able to witness it.
Since BY70-1 is reported to have 3-axis stabilization, we may be able to enjoy its use right up to its fiery end. I have been trying to work BY70-1 as much as my other responsibilities will allow. I encourage all to do the same.
73,
Mac / AE5PH
On 01/29/2017 10:07 AM, Todd Deckard wrote:
Greetings Joe!
space-track.org lists the decay epoch as 2017-02-22 0:00:00 -- note this is not strictly the re-entry time but perhaps gives us an approximate window?
I do not understand the material very well. It appears for large objects they will calculate a time-and-impact prediction as things become more certain but perhaps poor Bayi-Kepu-Weixing-1 may not rate as it doesn't pose a hazard.
I don't even know if it would be visible during re-entry given the speed?
When will we have a closer idea of when it may re-enter?
It would be neat to try to catch it on video.
Joe WB9SBD
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
So, if you happen to be on a border between two grid squares & you make a satellite contact that becomes a meteor scatter contact, do you just sit back and watch your logging program explode?
-Scott, K4KDR
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-----Original Message----- From: Ken Alexander Sent: Sunday, January 29, 2017 7:23 PM To: amsat-bb@amsat.org Subject: Re: [amsat-bb] Re-entry predictions for BY70-1
A unique meteor scatter opportunity!
73,
Ken VE3HLS
On 2017-01-29 5:51 PM, Mac A. Cody wrote:
Todd and Joe,
Given that BY70-1 is a 2U cubesat measuring 10x10x20cm and weighing only a few kilograms (details here: https://amsat-uk.org/2016/12/27/by70-1-fm-transponder-satellite/), it will completely burn up upon reentry. When and where it will burn up, of course, depends on the orbital dynamics, atmospheric conditions (the sun's radiation affects the height of the top of the atmosphere), and the satellite cross-section. The eventual demise may be over one of the oceans or a cloudy region, with no one present or able to witness it.
Since BY70-1 is reported to have 3-axis stabilization, we may be able to enjoy its use right up to its fiery end. I have been trying to work BY70-1 as much as my other responsibilities will allow. I encourage all to do the same.
73,
Mac / AE5PH
On 01/29/2017 10:07 AM, Todd Deckard wrote:
Greetings Joe!
space-track.org lists the decay epoch as 2017-02-22 0:00:00 -- note this is not strictly the re-entry time but perhaps gives us an approximate window?
I do not understand the material very well. It appears for large objects they will calculate a time-and-impact prediction as things become more certain but perhaps poor Bayi-Kepu-Weixing-1 may not rate as it doesn't pose a hazard.
I don't even know if it would be visible during re-entry given the speed?
When will we have a closer idea of when it may re-enter?
It would be neat to try to catch it on video.
Joe WB9SBD
Only Mr. Spock could answer that!
73,
Ken VE3HLS
On 2017-01-29 7:35 PM, Scott wrote:
So, if you happen to be on a border between two grid squares & you make a satellite contact that becomes a meteor scatter contact, do you just sit back and watch your logging program explode?
-Scott, K4KDR
==========================================================
-----Original Message----- From: Ken Alexander Sent: Sunday, January 29, 2017 7:23 PM To: amsat-bb@amsat.org Subject: Re: [amsat-bb] Re-entry predictions for BY70-1
A unique meteor scatter opportunity!
73,
Ken VE3HLS
On 2017-01-29 5:51 PM, Mac A. Cody wrote:
Todd and Joe,
Given that BY70-1 is a 2U cubesat measuring 10x10x20cm and weighing only a few kilograms (details here: https://amsat-uk.org/2016/12/27/by70-1-fm-transponder-satellite/), it will completely burn up upon reentry. When and where it will burn up, of course, depends on the orbital dynamics, atmospheric conditions (the sun's radiation affects the height of the top of the atmosphere), and the satellite cross-section. The eventual demise may be over one of the oceans or a cloudy region, with no one present or able to witness it.
Since BY70-1 is reported to have 3-axis stabilization, we may be able to enjoy its use right up to its fiery end. I have been trying to work BY70-1 as much as my other responsibilities will allow. I encourage all to do the same.
73,
Mac / AE5PH
On 01/29/2017 10:07 AM, Todd Deckard wrote:
Greetings Joe!
space-track.org lists the decay epoch as 2017-02-22 0:00:00 -- note this is not strictly the re-entry time but perhaps gives us an approximate window?
I do not understand the material very well. It appears for large objects they will calculate a time-and-impact prediction as things become more certain but perhaps poor Bayi-Kepu-Weixing-1 may not rate as it doesn't pose a hazard.
I don't even know if it would be visible during re-entry given the speed?
When will we have a closer idea of when it may re-enter?
It would be neat to try to catch it on video.
Joe WB9SBD
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
participants (5)
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Joe -
Ken Alexander -
Mac A. Cody -
Scott -
Todd Deckard