Can't rep again so soon, but nice post!
Exploration - When worlds colide
- Thread starter Ben Ryder
- Start date
Can't rep again so soon, but nice post!
The dilemma of a casual player 
258.09 hours past ~2:30am October 5th would be October 15th at 20:35 GMT.
Actually, almost certainly, sometime before that since the approach speed isn't linear and the measurements are all rounded to two decimal places.
I wont even know if I will be playing then let alone get there, hopefully you guys will film it
258.09 hours past ~2:30am October 5th would be October 15th at 20:35 GMT.
Actually, almost certainly, sometime before that since the approach speed isn't linear and the measurements are all rounded to two decimal places.
I wont even know if I will be playing then let alone get there, hopefully you guys will film it
Does anyone know if the gravitational attraction between the two moons is modeled in the game? The approach speed is much faster today than in my previous post.
The speed I was using yesterday of 0.001317 Ls per hour was an average speed between Sept 21st and Oct 5th.
Based on that speed, my predictions of when the distance would change today were way off. The moon seems to be approaching significantly faster now.
Does anyone know if the gravitational attraction between the two moons is modeled in the game? The approach speed appears to be much faster today than in my previous post.
Update: Removed inaccurate numbers
I may have done something wrong because the numbers I had didn't accurately predict the time of the next distance change.
I may have recorded a bad number somewhere or the game is not rounding the numbers consistently or is not updating the displayed distance in a consistent way.
I've narrowed the approach speed down to within a 16 minute window and in another 6 hours (give or take 8 minutes) I should have it timed down to the minute.
The speed I was using yesterday of 0.001317 Ls per hour was an average speed between Sept 21st and Oct 5th.
Based on that speed, my predictions of when the distance would change today were way off. The moon seems to be approaching significantly faster now.
Does anyone know if the gravitational attraction between the two moons is modeled in the game? The approach speed appears to be much faster today than in my previous post.
Update: Removed inaccurate numbers
I may have done something wrong because the numbers I had didn't accurately predict the time of the next distance change.
I may have recorded a bad number somewhere or the game is not rounding the numbers consistently or is not updating the displayed distance in a consistent way.
I've narrowed the approach speed down to within a 16 minute window and in another 6 hours (give or take 8 minutes) I should have it timed down to the minute.
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No.
From the point of view of the player, gravity only exists for one object at a time: the frame-of-reference object. For example, if you're closely orbiting a moon and that moon is listed in the bottom left corner of the screen, that's where all of your local gravity is coming from. The gravity from the planet the moon is orbiting is "switched off" until you get far enough away from the moon that the planet becomes the frame of reference; then the moon's gravity is switched off.
For orbital calculations, each orbit is calculated purely from a two-body-problem point of view. Nobody's got a home computer powerful enough to accurately resolve the n-body problem.
So, two moons will completely ignore each other, gravitationally.
So I've been laboring under a false assumption. I assumed that I could determine the speed of the approach by accurately logging the time it takes for the distance to tick down exactly 0.01Ls.
Turns out that no matter how accurately I keep track, the timing is varying wildly and I can't predict at all when it will happen.
First it was moving much faster than my previous average and now it's moving much slower than predicted by the previous days numbers.
Yesterday, the moon got 0.01Ls closer in somewhere between 5:55 and 6:11. Today it took exactly 9:15:02. I recorded the screen using shadow-play so I could see the exact time it clicked over.
I was very confused, but I think I might have just figured it out.
The pair orbit their planet relatively quickly, 1.4d. They are almost in the same orbit so they are moving at almost the same speed.
But the orbits are not exactly circular. They have an eccentricity of 0.0011 and 0.0010. An Inclination of 0.15° and -0.07°. Arg of periapsis is 321.73° and 269.94°.
So they don't orbit exactly parallel to each other, and their apsis don't align.
I think these differences in their orbits can account for the variations I'm seeing in approach speed. So I'm not going to be able to keep track of the approach speed in real-time.
I guess I'll have to average it over 1.4-2.8 days to get anything resembling an accurate approach speed.
Turns out that no matter how accurately I keep track, the timing is varying wildly and I can't predict at all when it will happen.
First it was moving much faster than my previous average and now it's moving much slower than predicted by the previous days numbers.
Yesterday, the moon got 0.01Ls closer in somewhere between 5:55 and 6:11. Today it took exactly 9:15:02. I recorded the screen using shadow-play so I could see the exact time it clicked over.
I was very confused, but I think I might have just figured it out.
The pair orbit their planet relatively quickly, 1.4d. They are almost in the same orbit so they are moving at almost the same speed.
But the orbits are not exactly circular. They have an eccentricity of 0.0011 and 0.0010. An Inclination of 0.15° and -0.07°. Arg of periapsis is 321.73° and 269.94°.
So they don't orbit exactly parallel to each other, and their apsis don't align.
I think these differences in their orbits can account for the variations I'm seeing in approach speed. So I'm not going to be able to keep track of the approach speed in real-time.
I guess I'll have to average it over 1.4-2.8 days to get anything resembling an accurate approach speed.
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I have a very accurate 36 hour average speed now of 0.001378 Ls/hr
That's extremely close to the previously calculated 334 hour average of 0.001317, so it's not getting much faster.
The moon got exactly 0.05Ls closer in exactly 1 day, 12 hours, 17 minutes and 25 seconds (thanks to shadow play)
It ticked over from reading 0.26Ls away to 0.25Ls at exactly 19:08:56 Oct 7
Based on that speed, I project it to be 0.01Ls away (~2.9Mm) in 181.4514 hours or 0.00Ls away in 188.7094 hours
Within 1Mm from Sunday, October 15, at 13:25:56 pm, peaking at 15:50:56 pm and 1Mm past at 18:15:56 pm.
An approximate 4 hour, 50 minute window.
hypermumm, does 4-5 hours match your experience of how long the collision lasted last time? 5.44Mm would be ~13 hours at this speed.
I'm pretty confident in these numbers but if anyone wants to check my math ...
Update: During the next 29 hours it moved 0.04Ls closer for an average speed of 0.001382 Ls/hr
Averaging the speed over the past 65 hours it's ~0.001380 Ls/hr
This puts the collision time at 15:33:54 , A bit sooner than the previous estimate, but not by much
Update: 89 hour average is 0.001338 Ls/hr, that's a little slower than my first average of 0.001378. I'm hoping to be more precise when it ticks past 0.10 and we get the reading in Mm instead of Ls.
If you're coming for the party, you'll want to be there on or before the morning of Sunday the 15th. The moon will be 0.01Ls away or ~3Mm by ~8:36 am.
As they get closer, you could be in the sphere of influence of both moons at the same time which could make your frame of reference unpredictable. The b moon is moving at ~150M/sec relative to the c moon.
The system name is Kyloasly DA-A f69, The moons are 2 c and 2 b. Gravity is Low. Distance to Sol: 23,334.89 ly, Distance to Colonia: 1,408.59 ly
I believe the centerpoint of the collision will be at or close to the -30 meridian (on 2c) where the planet is directly above you. They are tidally locked so they don't rotate.
I'm parked on the C moon at 30N by 30W or 30/-30 in the Fleetcom PG.
It's a Black Hole system with nothing scoopable, so fill up your tank before you get here. You could be here burning fuel for 5-15 hours or more.
The moon is very dark at night when it's shadowed by the planet, so you may need to adjust your gamma in order to see the surface. I'm hoping the event doesn't happen when the moons are in shadow.
I'm tempted to try to switch planets in an SRV but I want to record it for YouTube so I probably won't try it. Hopefully someone will.
My last station was Jaques ~1,408.59 ly away. So If my ship is destroyed for some reason, I could be back in the system in 23 jumps or under 23 minutes.
That's extremely close to the previously calculated 334 hour average of 0.001317, so it's not getting much faster.
The moon got exactly 0.05Ls closer in exactly 1 day, 12 hours, 17 minutes and 25 seconds (thanks to shadow play)
It ticked over from reading 0.26Ls away to 0.25Ls at exactly 19:08:56 Oct 7
Based on that speed, I project it to be 0.01Ls away (~2.9Mm) in 181.4514 hours or 0.00Ls away in 188.7094 hours
Within 1Mm from Sunday, October 15, at 13:25:56 pm, peaking at 15:50:56 pm and 1Mm past at 18:15:56 pm.
An approximate 4 hour, 50 minute window.
hypermumm, does 4-5 hours match your experience of how long the collision lasted last time? 5.44Mm would be ~13 hours at this speed.
I'm pretty confident in these numbers but if anyone wants to check my math ...
Here's my data (all dates GMT, times from game clock)
It ticked over from 0.32Ls away to 0.31Ls on Oct 6 at 06:51:31
It ticked over from 0.31Ls away to 0.30Ls on Oct 6 at 16:06:33 (9 hours, 15 minutes, 2 seconds)
It ticked over from 0.30Ls away to 0.29Ls on Oct 7 at 01:16:46 (9 hours, 10 minutes, 13 seconds)
It ticked over from 0.27Ls away to 0.26Ls on Oct 7 at 19:08:56 (17 hours, 52 minutes, 10 seconds)
- Unless I'm mistaken, That's a change of 0.05Ls over 36.29 hours or a speed of 0.001378 Ls/hr
It ticked over from 0.23Ls away to 0.22Ls on Oct 9 at 00:05:54 (28 hours, 56 minutes, 58 seconds)
- 0.04Ls this time over 28.95 hours or a speed of 0.001382 Ls/hr
- Over the past 65.24 hours it closed 0.09Ls making the average speed ~0.001380 Ls/hr
It ticked over from 0.20Ls away to 0.19 on 10 oct at 00:31:39 (24 hours, 25 minutes, 25 seconds)
- 0.12 Ls closer in 89.66 hours takes the average to 0.001338 Ls/hr
It ticked over from 0.32Ls away to 0.31Ls on Oct 6 at 06:51:31
It ticked over from 0.31Ls away to 0.30Ls on Oct 6 at 16:06:33 (9 hours, 15 minutes, 2 seconds)
It ticked over from 0.30Ls away to 0.29Ls on Oct 7 at 01:16:46 (9 hours, 10 minutes, 13 seconds)
It ticked over from 0.27Ls away to 0.26Ls on Oct 7 at 19:08:56 (17 hours, 52 minutes, 10 seconds)
- Unless I'm mistaken, That's a change of 0.05Ls over 36.29 hours or a speed of 0.001378 Ls/hr
It ticked over from 0.23Ls away to 0.22Ls on Oct 9 at 00:05:54 (28 hours, 56 minutes, 58 seconds)
- 0.04Ls this time over 28.95 hours or a speed of 0.001382 Ls/hr
- Over the past 65.24 hours it closed 0.09Ls making the average speed ~0.001380 Ls/hr
It ticked over from 0.20Ls away to 0.19 on 10 oct at 00:31:39 (24 hours, 25 minutes, 25 seconds)
- 0.12 Ls closer in 89.66 hours takes the average to 0.001338 Ls/hr
Averaging the speed over the past 65 hours it's ~0.001380 Ls/hr
This puts the collision time at 15:33:54 , A bit sooner than the previous estimate, but not by much
Update: 89 hour average is 0.001338 Ls/hr, that's a little slower than my first average of 0.001378. I'm hoping to be more precise when it ticks past 0.10 and we get the reading in Mm instead of Ls.
If you're coming for the party, you'll want to be there on or before the morning of Sunday the 15th. The moon will be 0.01Ls away or ~3Mm by ~8:36 am.
As they get closer, you could be in the sphere of influence of both moons at the same time which could make your frame of reference unpredictable. The b moon is moving at ~150M/sec relative to the c moon.
The system name is Kyloasly DA-A f69, The moons are 2 c and 2 b. Gravity is Low. Distance to Sol: 23,334.89 ly, Distance to Colonia: 1,408.59 ly
I believe the centerpoint of the collision will be at or close to the -30 meridian (on 2c) where the planet is directly above you. They are tidally locked so they don't rotate.
I'm parked on the C moon at 30N by 30W or 30/-30 in the Fleetcom PG.
It's a Black Hole system with nothing scoopable, so fill up your tank before you get here. You could be here burning fuel for 5-15 hours or more.
The moon is very dark at night when it's shadowed by the planet, so you may need to adjust your gamma in order to see the surface. I'm hoping the event doesn't happen when the moons are in shadow.
I'm tempted to try to switch planets in an SRV but I want to record it for YouTube so I probably won't try it. Hopefully someone will.
My last station was Jaques ~1,408.59 ly away. So If my ship is destroyed for some reason, I could be back in the system in 23 jumps or under 23 minutes.
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Another timelapse.
[video=youtube;JuDpzWYFfvY]https://youtu.be/JuDpzWYFfvY[/video]
[video=youtube;JuDpzWYFfvY]https://youtu.be/JuDpzWYFfvY[/video]
Sorry for the late answer
Yes a couple of hours should be correct but i didn't observe the whole collision only the first hour and thats when the pictures where taken.
also here is an imgur link with all the images https://imgur.com/a/3f9JC
And the thing with the reference frame is that it is really unpredictable even when you are clearly closer to one moon.
I for my part gonna try to fly a fighter between the two planets during contact
Yes a couple of hours should be correct but i didn't observe the whole collision only the first hour and thats when the pictures where taken.
also here is an imgur link with all the images https://imgur.com/a/3f9JC
And the thing with the reference frame is that it is really unpredictable even when you are clearly closer to one moon.
I for my part gonna try to fly a fighter between the two planets during contact
I'll be recording
Just arrived at colonia and the system is only 8 jumps from there (For me anyway)If anyone wants to meet at the doomed planet PM me - Cheers
o7
Nutters and I are in Fleetcomm PG at ~ 30 by -30
Here's the view with the moon now at 0.15 Ls away
Here's the view with the moon now at 0.15 Ls away
Yep thanks for the beacon and good news is, it's just 8 jumps from Colonia !
Taking in the view...
I'm on my way, just about 0.12 LS away
though I'm in open
though I'm in open
I have a few more things to wrap up, but then am planning on Buckyballing the 10kly to get here in time.
SO these times here...I presume they are in game time right?
I am heading there and should make it. I am an early backer of Elite Dangerous, have been a dedicated explorer since 2.0 dropped. In fact, since 2.0 dropped, I have spent fewer than 24 hours in inhabited space. I have been in a wing a couple of times with a few people in the bubble before, this will actually be my first in game meet up like this ever. Figure, I need to practice for DWEII!
By "in-game" you mean the time zone, right?
The little clock thingy in our cockpit HUD is the same time for all players worldwide, and is set to GMT if I remember correctly.
Yes, GMT is a time zone. And exactly because of that, cos the "game time" is the same as "IRL time". It's just set to a specific time zone. So technically there is no separate "game time".