Posts by amaury

by amaury
15.03.2006, 15:32
Forum: Scripting
Topic: NEO tracking script beta2
Replies: 6
Views: 4876

Re: NEO tracking script beta2

so i might end up adjusting the number of mainloops to the framerate, using a "mainloops per second" indicator that is already in the script (the "mps" variable). This way, the script would perform fewer mainloops (1 instead of 2 for instance), with reduced accuracy on distances calculation, but bet...
by amaury
14.03.2006, 18:04
Forum: Scripting
Topic: NEO tracking script beta2
Replies: 6
Views: 4876

Re: NEO tracking script beta2

i feel it almost becomes a nuisance if one has to enable/disable some ssc files before using the script. Doesn't really fit with the idea of an "educational", easy script :? I guess if i upload it, i should mention it works well for comets and small asteroid files, but does require a fast computer f...
by amaury
14.03.2006, 07:17
Forum: Scripting
Topic: NEO tracking script beta2
Replies: 6
Views: 4876

Re: NEO tracking script beta2

gloups, that's what i feared :? too many loops probably. Can i ask you to try the first version for fps http://asolignac.free.fr/celestia/NWSv1beta.celx and see if there is any difference ? My own system is : 1GB 3GHz PD(hyperthread), WinXP SP2 128MB Radeon X600 Celestia v1.4.1 final thanks
by amaury
13.03.2006, 21:52
Forum: Scripting
Topic: NEO tracking script beta2
Replies: 6
Views: 4876

NEO tracking script beta2

NEO tracking script beta2 is out! (i felt this one deserved another post, i hope nobody gets angry :wink: ) http://asolignac.free.fr/celestia/NWSv2beta.celx Interface has been improved, output is not mandatory anymore (but the html file now includes cel: // urls), and progressive zooming has been ad...
by amaury
13.03.2006, 18:14
Forum: Scripting
Topic: Relative velocity/speed
Replies: 5
Views: 5381

Re: Relative velocity/speed

Thanks a lot ! I'll check it out right away!!
by amaury
13.03.2006, 12:07
Forum: Scripting
Topic: Relative velocity/speed
Replies: 5
Views: 5381

Re: Relative velocity/speed

forgot to mention that both objects would be orbiting the sun...
by amaury
13.03.2006, 12:06
Forum: Scripting
Topic: Relative velocity/speed
Replies: 5
Views: 5381

Relative velocity/speed

Hi,

does anyone know how i could calculate the relative velocity (or speed, to make things simpler) of an object relative to another object ?

I guess the orbital elements of both are enough, but i am not too much into formulas... :)

Any hint ?

thankx
Amaury
by amaury
11.03.2006, 23:36
Forum: Scripting
Topic: Near Earth Objects tracking script - beta
Replies: 5
Views: 4393

Re: Near Earth Objects tracking script - beta

One feature i realize would be necessary is a calibration test, to adjust the timescales on slow computers... otherwise the mainloop of the script may not run a sufficient number of times per second.

This is particularly true with big asteroids.ssc files...
by amaury
05.03.2006, 14:27
Forum: Scripting
Topic: Near Earth Objects tracking script - beta
Replies: 5
Views: 4393

Re: Near Earth Objects tracking script - beta

The idea was originally to see how the NEO impact risk would show up in a closed-loop simulation of the solar system. Now, i know the simulation and the NEO data are very approximative. It is more a demonstrative tool, to figure out distance and time scales (frequency of approaches). It also shows h...
by amaury
05.03.2006, 12:40
Forum: Scripting
Topic: Near Earth Objects tracking script - beta
Replies: 5
Views: 4393

Re: Near Earth Objects tracking script - beta

Fair enough... i guess the night has been too long ;) so, the script will use the available asteroid / comet data to record the closest approach to Earth during the simulation, marking objects with small triangles if they enter a defined range, and bigger triangles if they enter a closer range. When...
by amaury
05.03.2006, 04:08
Forum: Scripting
Topic: Near Earth Objects tracking script - beta
Replies: 5
Views: 4393

Re: Near Earth Objects tracking script - beta

oh and by the way, the script outputs the closest approach to Earth, compared to all previous ones recorded by the script.

So as the script goes, you will have to wait longer and longer to get a closer approach...

Ranges and timescales can be specified in the script.
by amaury
05.03.2006, 04:05
Forum: Scripting
Topic: Near Earth Objects tracking script - beta
Replies: 5
Views: 4393

Near Earth Objects tracking script - beta

Hello to all i'd like to improve this script before i release it on the motherlode. Beta testing and suggestions welcomed :) http://asolignac.free.fr/celestia/NWSv1beta.celx NB : the script will ask you for systemaccess() permission as it outputs results to an html file and a few jpg screenshots. Ev...

Go to advanced search