[1.2] Galileo's Planet Pack (development thread) [v0.9]

[Jiraiyah]

2 minutes ago, JadeOfMaar said:

@Jiraiyah You're right.

That's just wonderful.... Tellumo's sync orbit altitude is indeed very wrong. It should be 10,613,665m.

well the calculations are all working, i just got the numbers from pdf ! so I WIN WOOOOOT

god i love when you wrap your mind around a math equation take a look at this part

basically, you put your desired orbital period and you get the altitude or you put the altitude and you get the orbital period

Edited October 30, 2016 by Jiraiyah

[kraden]

I thought all of the moons were going to be tidally locked with their patent planet? Wouldn't this prevent geostationary orbits?

[Jiraiyah]

1 minute ago, kraden said:

I thought all of the moons were going to be tidally locked with their patent planet? Wouldn't this prevent geostationary orbits?

donno, never played with this pack, just want to start the moment a patch for gui comes out, just trying to see if i can figure some things, what do you mean by that statement by the way?

[JadeOfMaar]

@kraden I do believe @Jiraiyah is working some kinjutsu on the planets to get sync orbits where they can't happen. The moons are indeed all tidally locked and should disallow sync orbits.

So your math just now if for a 2-day orbital period? And the formula is rigged in Excel so you can just, do it? : D

Also what does the E mean in the gravity parameter. I don't know its name, let alone understand it.

Spoiler

Jiraiyah has forbidden techniques! ...Of course.

 

[kraden]

I'm guessing the mistake has to do with the sidreal day. A moon's sidreal day has nothing to do with it's geostationary orbit as it is not orbiting the sun, it's orbiting the planet. It's relative day to the planet is infinite with a tidally locked moon.

[Jiraiyah]

6 minutes ago, JadeOfMaar said:

@kraden I do believe @Jiraiyah is working some kinjutsu on the planets to get sync orbits where they can't happen. The moons are indeed all tidally locked and should disallow sync orbits.

So your math just now if for a 2-day orbital period? And the formula is rigged in Excel so you can just, do it? : D

Also what does the E mean in the gravity parameter. I don't know its name, let alone understand it.

  Hide contents

Jiraiyah has forbidden techniques! ...Of course.

 

well i didn't know about the moons, about the excel, well, it's open office and yes the formula is there so i can calculate anything for any orbit

about the E it's scientific representation of numbers : 1 E 2 =  1 * 10 ^2 = 100

3 minutes ago, kraden said:

I'm guessing the mistake has to do with the sidreal day. A moon's sidreal day has nothing to do with it's geostationary orbit as it is not orbiting the sun, it's orbiting the planet. It's relative day to the planet is infinite with a tidally locked moon.

oh dang it lmao ufffff

Edited October 30, 2016 by Jiraiyah

[JadeOfMaar]

In any case I think these altitudes would be outside the moons' SOI. Perhaps include those in your spreadsheet?

[Jiraiyah]

1 hour ago, JadeOfMaar said:

In any case I think these altitudes would be outside the moons' SOI. Perhaps include those in your spreadsheet?

SOI is the last column right to the left or the stationary orbit sir (pinkish color one)

[JadeOfMaar]

There's a what? ...Around Thalia? ......A what????

 

[Jiraiyah]

6 hours ago, JadeOfMaar said:

There's a what? ...Around Thalia? ......A what????

 

Umm what did you want to show in that pic? i am not playing ksp right now, as i said i am waiting for gui patch to be released

[JadeOfMaar]

@Jiraiyah It's a pirate station with a "Jolly Thalia" flag.

[Jiraiyah]

2 minutes ago, JadeOfMaar said:

@Jiraiyah It's a pirate station with a "Jolly Thalia" flag.

oh lmao, by the way which mod is adding these?

[JadeOfMaar]

Those are crew cabins and inline docking ports (with crew space). The mod is OPT Spaceplane Parts. I think I'm the first to build a station from those parts.

 

[Jiraiyah]

1 minute ago, JadeOfMaar said:

Those are crew cabins and inline docking ports (with crew space). The mod is OPT Spaceplane Parts. I think I'm the first to build a station from those parts.

 

WHAT? OPT? wow never thought about using it's parts like this lmao, you are right, you should be the first person and they should award you for creativity, they look nothing like the normal OPT planes look like wow

[JadeOfMaar]

Since the very large, spire-like "wing root" part appeared I've gotten ideas to make tower-like sections for stations.

[Poodmund]

On 10/29/2016 at 4:43 PM, JadeOfMaar said:

I have plans for something like that already, with a lot of those wonderful details. The details will also include total approach dV and travel time between planets. Currently this "wiki" will only exist as a series of high-resolution JPG images but I may expand into a fan site on Wikia or the like (or especially, make a KSPedia like @jandcando did). There's a sample in a spoiler. The sample image will change as I'm still gathering data and deciding which data to feature.

  Reveal hidden contents

 

 

If you ever need help in figuring out KSPedia entries, I did the ones for OPM quite a few months back and have the templates that I used in Unity if its any help... if you want to mimic the stock-a-like feel.

[Jiraiyah]

1 minute ago, Poodmund said:

If you ever need help in figuring out KSPedia entries, I did the ones for OPM quite a few months back and have the templates that I used in Unity if its any help... if you want to mimic the stock-a-like feel.

that would be wonderfull

[Benji13]

46 minutes ago, Poodmund said:

If you ever need help in figuring out KSPedia entries, I did the ones for OPM quite a few months back and have the templates that I used in Unity if its any help... if you want to mimic the stock-a-like feel.

KSPedia entries sounds great. Still waiting for galactic neighbourhood to update...

[Vandest]

It seems to be an amazing work !!!

I will try it ! Thank you @Galileo !

[OhioBob]

On ‎10‎/‎30‎/‎2016 at 8:37 AM, Jiraiyah said:

Ok, here is the finished table with the update, thanks for the info sir, but something is interesting, every single planet and their moon has geostationary orbit other than icarus !!! also, that sphere of influence on Catullus, wow !!!!

well either you are missing something or something odd is going on, based on the calculations i get same result on Niven, but check my previous post (full table with moons) all the moons has geostationary orbits inside their sphere of influence !!! or something in the pdf is wrong

For the most part that looks pretty good, but there is one major problem.  In the PDF from which you got the data, the sidereal periods of the moons are given in days, while your spreadsheet requires hours.  You're therefore off by a factor of 6.  For example, the period of Eta is

23.86 days x 6 hours/day = 143.16 hours.

Also the numbers in the PDF are rounded off, so that's going to produce a small amount of error in your calculations.  Two numbers that are exact are mean radius and surface gravity, so those numbers can be used to compute the exact gravitational parameter, as follows

μ = 9.81 * g * r²

For example, for Thalia we have

μ = 9.81 * 0.30 * 270000² = 2.145447E+11 m³/s²

You can also calculate the moons' exact sidereal orbit periods (which also equals the rotation periods since they're tidally locked) using the following formula,

P = 2 * π * SQRT(a³ / μ)

where a is the semimajor axis of the moon's orbit, μ is the gravitational parameter of the parent planet, and the period P is given in seconds.

For example, Eta's sidereal period is

P = 2 * π * SQRT(11300000³ / 2.145447E+11) = 515274.485557695 seconds

P = 515274.485557695 s x 1/3600 hr/s = 143.131801543804 hours

For your information, all the semimajor axes given in the PDF are exact except for Gael.  Gael's exact SMA is 13,984,359,719 meters.  (Gael's SMA is carried out to greater precision because that's what was needed to give it an orbital period of 426 days to match the length of the built-in calendar.)

The rotation periods of the planets given in the PDF are all exact except for Gael and Gratian.  Gratian is tidally locked to its moon, so Gratian and Geminus both have the same rotation period, which is 38.6727788631767 hours.  For Gael, its solar day is set to exactly 6 hours, which makes its sidereal period 5.98594847925518 hours.

I'm the person who established all these values for GPP, so if you have and any other questions, I'm probably the best guy to ask.

(edit)  By the way, after you correct the sidereal periods of the moons, you should find that stationary orbits are impossible around all of them.
 

Edited October 31, 2016 by OhioBob

[Galileo]

1 minute ago, OhioBob said:

For the most part that looks pretty good, but there is one major problem.  In the PDF from which you got the data, the sidereal periods of the moons are given in days, while your spreadsheet requires hours.  You're therefore off by a factor of 6.  For example, the period of Eta is

23.86 days x 6 hours/day = 143.16 hours.

Also the numbers in the PDF are rounded off, so that's going to produce a small amount of error in your calculations.  Two numbers that are exact are mean radius and surface gravity, so those numbers can be used to compute the exact gravitational parameter, as follows

μ = 9.81 * g * r²

For example, for Thalia we have

μ = 9.81 * 0.30 * 270000² = 2.145447E+11 m³/s²

You can also calculate the moons' exact sidereal orbital periods (which also equals the rotation periods since they're tidally locked) using the following formula,

P = 2 * π * SQRT(a³ / μ)

where a is the semimajor axis of the moon's orbit, μ is the gravitational parameter of the parent planet, and the period P is given in seconds.

For example, Eta's sidereal period is

P = 2 * π * SQRT(11300000³ / 2.145447E+11) = 515274.4856 seconds

P = 515274.4856 s x 1/3600 hr/s = 143.1318015 hours

For your information, all the semimajor axes given in the PDF are exact except for Gael.  Gael's exact SMA is 13,984,359,719 meters.  (Gael's SMA is carried out to greater precision because that's what was needed to give it an orbital period of 426 days to match the length of the built-in calendar.)

The rotation periods of the planets given in the PDF are all exact except for Gael and Gratian.  Gratian is tidally locked to its moon, so Gratian and Geminus both have the same rotation period, which is 38.6727788631767 hours.  For Gael, its solar day is set to exactly 6 hours, which makes its sidereal period 5.98594847925518 hours.

I'm the person who established all these values for GPP, so if you have and any other questions, I'm probably the best guy to ask.

you know how I know you are the best person to ask? You know how to make these symbols (μ, π) on your computer and I have to copy and paste... i dont do much math lol

[OhioBob]

Just now, Galileo said:

you know how I know you are the best person to ask? You know how to make these symbols (μ, π) on your computer and I have to copy and paste... i dont do much math lol

Ha, I have to copy and paste them too.  I create them in either Word or Excel (using the insert symbol feature) and then copy and paste them into my forum post.

[Galileo]

Just now, OhioBob said:

Ha, I have to copy and paste them too.  I create them in either Word or Excel (using the insert symbol feature) and then copy and paste them into my forum post.

ah i see... well now you have made yourself mortal again

[Jiraiyah]

1 hour ago, OhioBob said:

For the most part that looks pretty good, but there is one major problem.  In the PDF from which you got the data, the sidereal periods of the moons are given in days, while your spreadsheet requires hours.  You're therefore off by a factor of 6.  For example, the period of Eta is

23.86 days x 6 hours/day = 143.16 hours.

Also the numbers in the PDF are rounded off, so that's going to produce a small amount of error in your calculations.  Two numbers that are exact are mean radius and surface gravity, so those numbers can be used to compute the exact gravitational parameter, as follows

μ = 9.81 * g * r²

For example, for Thalia we have

μ = 9.81 * 0.30 * 270000² = 2.145447E+11 m³/s²

You can also calculate the moons' exact sidereal orbit periods (which also equals the rotation periods since they're tidally locked) using the following formula,

P = 2 * π * SQRT(a³ / μ)

where a is the semimajor axis of the moon's orbit, μ is the gravitational parameter of the parent planet, and the period P is given in seconds.

For example, Eta's sidereal period is

P = 2 * π * SQRT(11300000³ / 2.145447E+11) = 515274.485557695 seconds

P = 515274.485557695 s x 1/3600 hr/s = 143.131801543804 hours

For your information, all the semimajor axes given in the PDF are exact except for Gael.  Gael's exact SMA is 13,984,359,719 meters.  (Gael's SMA is carried out to greater precision because that's what was needed to give it an orbital period of 426 days to match the length of the built-in calendar.)

The rotation periods of the planets given in the PDF are all exact except for Gael and Gratian.  Gratian is tidally locked to its moon, so Gratian and Geminus both have the same rotation period, which is 38.6727788631767 hours.  For Gael, its solar day is set to exactly 6 hours, which makes its sidereal period 5.98594847925518 hours.

I'm the person who established all these values for GPP, so if you have and any other questions, I'm probably the best guy to ask.

(edit)  By the way, after you correct the sidereal periods of the moons, you should find that stationary orbits are impossible around all of them.
 

You are the best sir, here we have the updated chart, those cells with green color are all calculated from your formulas

[Galileo]

while yall are doing the maths, does anyone know how to make a dV map?