High Gravity

Pralines

P
o7 explorers
this evening, i encountered a strange anomaly.... in my journal.log !
a Surface Gravity of 95.789726
but the System Map in game tells me that this body "HD 148937 3" has a gravity of 9.77
in orbit of the planet, my ship tells me the gravity is 4, wich seems coherent with the system map info

is it a bug of the journal ?

{ "timestamp":"2020-01-27T17:36:05Z", "event":"Scan", "ScanType":"Detailed", "BodyName":"HD 148937 3", "BodyID":4, "Parents":[ {"Null":2}, {"Star":0} ], "StarSystem":"HD 148937", "SystemAddress":27754655, "DistanceFromArrivalLS":274.485626, "TidalLock":true, "TerraformState":"", "PlanetClass":"High metal content body", "Atmosphere":"", "AtmosphereType":"None", "Volcanism":"", "MassEM":97.939056, "Radius":20187066.000000, "SurfaceGravity":95.789726, "SurfaceTemperature":2026.549561, "SurfacePressure":0.000000, "Landable":true, "Materials":[ { "Name":"iron", "Name_Localised":"Fer", "Percent":21.094908 }, { "Name":"nickel", "Percent":15.955303 }, { "Name":"sulphur", "Name_Localised":"Soufre", "Percent":15.022845 }, { "Name":"carbon", "Name_Localised":"Carbone", "Percent":12.632656 }, { "Name":"chromium", "Name_Localised":"Chrome", "Percent":9.487081 }, { "Name":"manganese", "Name_Localised":"Manganèse", "Percent":8.711982 }, { "Name":"phosphorus", "Name_Localised":"Phosphore", "Percent":8.087643 }, { "Name":"zinc", "Percent":5.732806 }, { "Name":"tin", "Name_Localised":"Étain", "Percent":1.361992 }, { "Name":"tungsten", "Name_Localised":"Tungstène", "Percent":1.158322 }, { "Name":"technetium", "Name_Localised":"Technétium", "Percent":0.754480 } ], "Composition":{ "Ice":0.003842, "Rock":0.636601, "Metal":0.312774 }, "SemiMajorAxis":3465169920.000000, "Eccentricity":0.092083, "OrbitalInclination":-1.867428, "Periapsis":160.094894, "OrbitalPeriod":168442.734375, "RotationPeriod":168499.437500, "AxialTilt":-0.398762, "WasDiscovered":true, "WasMapped":true }
 

Sapyx

Sapyx
Yes, the Journals sometimes use units that are different to the units presented in-game. Like "Axial tilt": that's in radians, not degrees, so multiply the journal-number by 57.2958 to get the axial tilt in degrees. Likewise, distances like the planet radius or semimajor axis are in metres rather than AU, Ls, or km and the rotation and orbital periods are in seconds (!) rather than days. Good ol' SI units reign supreme in the journals.

This can cause some confusion. EDSM, for example, converts all the journal units into their corresponding units, except for axial tilt, where the measurement in radians is erroneously reported as degrees. Which is also why none of the planets in EDSM have an axial tilt greater than pi (3.14159).
 

varonica

varonica
Pralines said:
o7 explorers
this evening, i encountered a strange anomaly.... in my journal.log !
a Surface Gravity of 95.789726
but the System Map in game tells me that this body "HD 148937 3" has a gravity of 9.77
in orbit of the planet, my ship tells me the gravity is 4, wich seems coherent with the system map info
Click to expand...

Keep in mind the gravity you register in orbit would be correct if the planet was larger but contained the same mass, so if the surface was actually at the point you were in orbit, but the mass of the body was the same, the gravity would be 4g. As you get closer to the surface you would see the registered gravity climb until it reached the correct reading at the surface.
 

Pralines

P
varonica said:
Keep in mind the gravity you register in orbit would be correct if the planet was larger but contained the same mass, so if the surface was actually at the point you were in orbit, but the mass of the body was the same, the gravity would be 4g. As you get closer to the surface you would see the registered gravity climb until it reached the correct reading at the surface.
Click to expand...
the planet was pretty big
i was in an ASPx with 3D shields, i didn't want to loose my UC data, so i didn't try to land to check the real surface gravity
i my come back (on day) with a more suitable ship :)
 

varonica

varonica
Pralines said:
the planet was pretty big
i was in an ASPx with 3D shields, i didn't want to loose my UC data, so i didn't try to land to check the real surface gravity
i my come back (on day) with a more suitable ship :)
Click to expand...

That's ok, I'm in a Phantom with 3D shields and have landed on bodies with greater than 5g. The thing is your shields aren't there to protect you from blowing up when you hit the planet, they are just there to prevent the gradual accumulation of hull damage from ordinary touch downs, and now with hull repair limpets they are even less necessary. I usually find myself using a lot more care on high G bodies, it's the low grav ones I sometimes get careless with, the last one I blew myself up on was way less than one G, I just didn't realise I was so close to the ground and hit boost once to often! Tried to pull up but that's life, lost over 300m in exploration credits on that one.

Any ship with any level of shields, or even none at all, and any level of thrusters can land succesfully on high G in this versions of ED. Some of the old versions let you land but if your thrusters weren't strong enough you couldn't take off again, that's a laugh!
 

varonica

varonica
Pralines said:
how do you know you lost 300M, is the value stored somewhere ?
Click to expand...

That's probably a lowish figure from my actual loss, add around 20%.

EDDiscovery had me at around 310m, and that usually gives a low estimate although it is much better than it used to be.
 

Pralines

P
ok, thanks
i'll try EDD and i'll see if it is able to sum the discoveries of the past weeks (or only those in the current journal)
 

varonica

varonica
Pralines said:
ok, thanks
i'll try EDD and i'll see if it is able to sum the discoveries of the past weeks (or only those in the current journal)
Click to expand...

Anything you discovered, tagged and mapped, regardless of your status of turning the data in or not due to explody events, will be in the journal and can be summed up by EDDiscovery, it doesn't rely on you turning data in to UC.
 

Pralines

P
varonica said:
Anything you discovered, tagged and mapped, regardless of your status of turning the data in or not due to explody events, will be in the journal and can be summed up by EDDiscovery, it doesn't rely on you turning data in to UC.
Click to expand...
i'm running EDDiscovery but i don't see where the scan values are summed, is it in an addon ?
 
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