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Signal aquired! https://twitter.com/esaoperations/status/788768364235743232 https://twitter.com/esaoperations/status/788768364235743232

by Descon 10y ago

PuffinBlue 10y ago
Yes yes yes yes yes!!!! Get in!! EDIT: Hey, who downvotes happiness? Even if premature? Humbugs.
the_duke 10y ago
Yay! The sad thing is: only 2-8 sols before the battery is dead.
- Someone 10y ago
  Earth sols or Mars sols? (It's named after the sun, but a property of a planetary orbit)
  - bwhitty 10y ago
    I believe a sol is a Mars-specific term (at least in this context). But maybe reading The Martian has me thinking that.
    - mikeash 10y ago
      With a range as big as 2-8, it doesn't really matter. A Mars day is only 40 minutes longer.
    - planteen 10y ago
      I think you are right based on Wikipedia: The term sol is used by planetary astronomers to refer to the duration of a solar day on Mars.[8] A mean Martian solar day, or "sol", is 24 hours, 39 minutes, and 35.244 seconds.[6] When a spacecraft lander begins operations on Mars, the passing Martian days (sols) are tracked using a simple numerical count. The two Viking missions, Mars Phoenix and the Mars Science Laboratory rover Curiosity count the sol on which each lander touched down as "Sol 0"; Mars Pathfinder and the two Mars Exploration Rovers instead defined touchdown as "Sol 1".[9] Although lander missions have twice occurred in pairs, no effort was made to synchronize the sol counts of the two landers within each pair. Thus, for example, although Spirit and Opportunity were sent to operate simultaneously on Mars, each counted its landing date as "Sol 1", putting their calendars approximately 21 sols out of sync. Spirit and Opportunity differ in longitude by 179 degrees, so when it is daylight for one it is night for the other, and they carried out activities independently while both were operational. On Earth, astronomers often use Julian Dates – a simple sequential count of days – for timekeeping purposes. A proposed counterpart on Mars is the Mars Sol Date (MSD), which is a running count of sols since December 29, 1873 (coincidentally the birth date of astronomer Carl Otto Lampland). Another proposal suggests a start date (or epoch) in the year 1608 (invention of the telescope). Either choice is intended to ensure that all historically recorded events related to Mars occur after it. The Mars Sol Date is defined mathematically as MSD = (Julian Date using International Atomic Time - 2451549.5 + k)/1.02749125 + 44796.0, where k is a small correction of approximately 0.00014 d (or 12 s) due to uncertainty in the exact geographical position of the prime meridian at Airy-0 crater. The word "yestersol" was coined by the NASA Mars operations team early during the MER mission to refer to the previous sol (the Mars version of "yesterday"), and came into fairly wide use within that organization during the Mars Exploration Rover Mission of 2003.[10] It was even picked up and used by the press.[citation needed] Other neologisms include "tosol" (for "today" on Mars), as well as one of three Mars versions of "tomorrow": "nextersol", "morrowsol", or "solmorrow".[11] NASA planners coined the term "soliday" at least as far back as 2012 to refer to days off due to time phasing or the syncing of planetary schedules.[12] https://en.wikipedia.org/wiki/Timekeeping_on_Mars#Sols https://en.wikipedia.org/wiki/Timekeeping_on_Mars#Sols
    - lmm 10y ago
      Sol means a local solar day on a given planet - not necessarily Mars.
  - leojg 10y ago
    Sol, as a messure of a day is only used for Mars
  - exDM69 10y ago
    Mars Sol is just 40 minutes longer than earth day, not a huge difference.
jgrahamc 10y ago
That's nice, but that's not the lander. That's the downlink of landing data.
- the_duke 10y ago
  It's the EDM (lander) data, relayed through Mars Express.
- bd 10y ago
  It's starting to come (EDM is Schiaparelli lander, TGO is orbiter): -------------------- Latest status for lander: still unknown (next checkpoint after 20:00 CEST) Latest status for orbiter: seems good -------------------- 1) The @ESA_EDM landing recording from #MarsExpress has started arriving on Earth, #ESOC teams report seeing packets flowing #ExoMars 2) It will take just over 10 minutes for #MarsExpress to transmit the @ESA_EDM recording #ExoMars 3) Interpretation of the @ESA_EDM recording is quite complex - could take more than 30 minutes 4) @ESA_EDM recording from #MarsExpress is signal only, no telemetry. We can already tell a lot from that though. 5) #MarsExpress team now processing @ESA_EDM landing recording to extract the trace of the lander's signal as it descended to Mars. 6) #MarsExpress recording of @ESA_EDM descent is now processed and is being analysed by experts at #ESOC 7) ACQUISITION OF ORBITER SIGNAL! #ESOC hears @ESA_TGO's signal loud & clear after it emerges from behind #Mars 8) Initial reports from @ESA_TGO telemetry are that it performed exactly as expected during the #BigBurn 9) @ESA_TGO team are now analysing the health of the orbiter, looking good so far 10) Teams monitoring the Schiaparelli lander continue waiting for indication of the lander’s progress. Engineers are waiting for the next signal receipt slot, which will be provided by NASA’s Mars Reconnaissance Orbiter, which will overfly the Schiaparelli landing site between about 18:49 and 19:03 CEST, and downlink any received signals at around 20:00 CEST. 11) @ESA_EDM recording from #MarsExpress is inconclusive - not clear yet what the status of the lander is -------------------- https://twitter.com/esaoperations/status/788770343888556033 https://twitter.com/esaoperations/status/788770343888556033 https://twitter.com/esaoperations/status/788770921788178432 https://twitter.com/esaoperations/status/788770921788178432 https://twitter.com/esaoperations/status/788771548517785600 https://twitter.com/esaoperations/status/788771548517785600 https://twitter.com/esaoperations/status/788771906455470080 https://twitter.com/esaoperations/status/788771906455470080 https://twitter.com/esaoperations/status/788775324389634048 https://twitter.com/esaoperations/status/788775324389634048 https://twitter.com/esaoperations/status/788779693700968448 https://twitter.com/esaoperations/status/788779693700968448 https://twitter.com/esaoperations/status/788780512089432064 https://twitter.com/esaoperations/status/788780512089432064 https://twitter.com/esaoperations/status/788782643697577985 https://twitter.com/esaoperations/status/788782643697577985 https://twitter.com/esaoperations/status/788783926173130752 https://twitter.com/esaoperations/status/788783926173130752 http://www.esa.int/Our_Activities/Space_Science/ExoMars/Live_updates_ExoMars_arrival_and_landing http://www.esa.int/Our_Activities/Space_Science/ExoMars/Live... https://twitter.com/esaoperations/status/788790526422188032 https://twitter.com/esaoperations/status/788790526422188032
pulse7 10y ago
+1
mhandley 10y ago
I think that just means they can now download the recording of the lander's signal from Mars Express (which is being used as a signal relay), not that they yet know if the recording indicates a successful landing.

Signal aquired! https://twitter.com/esaoperations/status/788768364235743232 https://twitter.com/esaoperations/status/788768364235743232

by Descon 10y ago

Signal aquired! https://twitter.com/esaoperations/status/788768364235743232 https://twitter.com/esaoperations/status/788768364235743232

PuffinBlue 10y ago

Yes yes yes yes yes!!!! Get in!! EDIT: Hey, who downvotes happiness? Even if premature? Humbugs.

the_duke 10y ago

Yay! The sad thing is: only 2-8 sols before the battery is dead.

Someone 10y ago
Earth sols or Mars sols? (It's named after the sun, but a property of a planetary orbit)
- bwhitty 10y ago
  I believe a sol is a Mars-specific term (at least in this context). But maybe reading The Martian has me thinking that.
  - mikeash 10y ago
    With a range as big as 2-8, it doesn't really matter. A Mars day is only 40 minutes longer.
  - planteen 10y ago
    I think you are right based on Wikipedia: The term sol is used by planetary astronomers to refer to the duration of a solar day on Mars.[8] A mean Martian solar day, or "sol", is 24 hours, 39 minutes, and 35.244 seconds.[6] When a spacecraft lander begins operations on Mars, the passing Martian days (sols) are tracked using a simple numerical count. The two Viking missions, Mars Phoenix and the Mars Science Laboratory rover Curiosity count the sol on which each lander touched down as "Sol 0"; Mars Pathfinder and the two Mars Exploration Rovers instead defined touchdown as "Sol 1".[9] Although lander missions have twice occurred in pairs, no effort was made to synchronize the sol counts of the two landers within each pair. Thus, for example, although Spirit and Opportunity were sent to operate simultaneously on Mars, each counted its landing date as "Sol 1", putting their calendars approximately 21 sols out of sync. Spirit and Opportunity differ in longitude by 179 degrees, so when it is daylight for one it is night for the other, and they carried out activities independently while both were operational. On Earth, astronomers often use Julian Dates – a simple sequential count of days – for timekeeping purposes. A proposed counterpart on Mars is the Mars Sol Date (MSD), which is a running count of sols since December 29, 1873 (coincidentally the birth date of astronomer Carl Otto Lampland). Another proposal suggests a start date (or epoch) in the year 1608 (invention of the telescope). Either choice is intended to ensure that all historically recorded events related to Mars occur after it. The Mars Sol Date is defined mathematically as MSD = (Julian Date using International Atomic Time - 2451549.5 + k)/1.02749125 + 44796.0, where k is a small correction of approximately 0.00014 d (or 12 s) due to uncertainty in the exact geographical position of the prime meridian at Airy-0 crater. The word "yestersol" was coined by the NASA Mars operations team early during the MER mission to refer to the previous sol (the Mars version of "yesterday"), and came into fairly wide use within that organization during the Mars Exploration Rover Mission of 2003.[10] It was even picked up and used by the press.[citation needed] Other neologisms include "tosol" (for "today" on Mars), as well as one of three Mars versions of "tomorrow": "nextersol", "morrowsol", or "solmorrow".[11] NASA planners coined the term "soliday" at least as far back as 2012 to refer to days off due to time phasing or the syncing of planetary schedules.[12] https://en.wikipedia.org/wiki/Timekeeping_on_Mars#Sols https://en.wikipedia.org/wiki/Timekeeping_on_Mars#Sols
  - lmm 10y ago
    Sol means a local solar day on a given planet - not necessarily Mars.
- leojg 10y ago
  Sol, as a messure of a day is only used for Mars
- exDM69 10y ago
  Mars Sol is just 40 minutes longer than earth day, not a huge difference.

jgrahamc 10y ago

That's nice, but that's not the lander. That's the downlink of landing data.

the_duke 10y ago
It's the EDM (lander) data, relayed through Mars Express.
bd 10y ago
It's starting to come (EDM is Schiaparelli lander, TGO is orbiter): -------------------- Latest status for lander: still unknown (next checkpoint after 20:00 CEST) Latest status for orbiter: seems good -------------------- 1) The @ESA_EDM landing recording from #MarsExpress has started arriving on Earth, #ESOC teams report seeing packets flowing #ExoMars 2) It will take just over 10 minutes for #MarsExpress to transmit the @ESA_EDM recording #ExoMars 3) Interpretation of the @ESA_EDM recording is quite complex - could take more than 30 minutes 4) @ESA_EDM recording from #MarsExpress is signal only, no telemetry. We can already tell a lot from that though. 5) #MarsExpress team now processing @ESA_EDM landing recording to extract the trace of the lander's signal as it descended to Mars. 6) #MarsExpress recording of @ESA_EDM descent is now processed and is being analysed by experts at #ESOC 7) ACQUISITION OF ORBITER SIGNAL! #ESOC hears @ESA_TGO's signal loud & clear after it emerges from behind #Mars 8) Initial reports from @ESA_TGO telemetry are that it performed exactly as expected during the #BigBurn 9) @ESA_TGO team are now analysing the health of the orbiter, looking good so far 10) Teams monitoring the Schiaparelli lander continue waiting for indication of the lander’s progress. Engineers are waiting for the next signal receipt slot, which will be provided by NASA’s Mars Reconnaissance Orbiter, which will overfly the Schiaparelli landing site between about 18:49 and 19:03 CEST, and downlink any received signals at around 20:00 CEST. 11) @ESA_EDM recording from #MarsExpress is inconclusive - not clear yet what the status of the lander is -------------------- https://twitter.com/esaoperations/status/788770343888556033 https://twitter.com/esaoperations/status/788770343888556033 https://twitter.com/esaoperations/status/788770921788178432 https://twitter.com/esaoperations/status/788770921788178432 https://twitter.com/esaoperations/status/788771548517785600 https://twitter.com/esaoperations/status/788771548517785600 https://twitter.com/esaoperations/status/788771906455470080 https://twitter.com/esaoperations/status/788771906455470080 https://twitter.com/esaoperations/status/788775324389634048 https://twitter.com/esaoperations/status/788775324389634048 https://twitter.com/esaoperations/status/788779693700968448 https://twitter.com/esaoperations/status/788779693700968448 https://twitter.com/esaoperations/status/788780512089432064 https://twitter.com/esaoperations/status/788780512089432064 https://twitter.com/esaoperations/status/788782643697577985 https://twitter.com/esaoperations/status/788782643697577985 https://twitter.com/esaoperations/status/788783926173130752 https://twitter.com/esaoperations/status/788783926173130752 http://www.esa.int/Our_Activities/Space_Science/ExoMars/Live_updates_ExoMars_arrival_and_landing http://www.esa.int/Our_Activities/Space_Science/ExoMars/Live... https://twitter.com/esaoperations/status/788790526422188032 https://twitter.com/esaoperations/status/788790526422188032

pulse7 10y ago

mhandley 10y ago

I think that just means they can now download the recording of the lander's signal from Mars Express (which is being used as a signal relay), not that they yet know if the recording indicates a successful landing.