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Time Bug?

Posted: 17.03.2006, 21:55
by Ivvi
Dear Celestia users,
as I try to speed up time into the future (by reiterated 'L'), I cannot get beyon the year 5,874,774. After this limit, Celestia switches to year minus 5,884,200. I also cannot travel to the past far beyond these five million years which is nothing compared to the age of the universe.

Does anyone know any solution here?
Thanks in advance!
P.S. Particular thanks to Chris

Re: Time Bug?

Posted: 17.03.2006, 22:33
by t00fri
Ivvi wrote:Dear Celestia users,
as I try to speed up time into the future (by reiterated 'L'), I cannot get beyon the year 5,874,774. After this limit, Celestia switches to year minus 5,884,200. I also cannot travel to the past far beyond these five million years which is nothing compared to the age of the universe.

Does anyone know any solution here?
Thanks in advance!
P.S. Particular thanks to Chris


Since everything is finite in life, also the 'time reach' in Celestia cannot be arbitraily large. We are dealing here with numbers and they are obviously finite in computers. So what exactly would you chose as the maximum time reach, were you a Celestia developer? ;-)

Please consider also for a minute or two that any orbits of planets will be grossly incorrect at such monstrous times...Don't you care a bit about accuracy?

Since 5,874,774 appears too small for you, how about
58,747,740? But while you might be satisfied with this 10 times bigger number, some other user might still like a bigger one and post in Celestia Bugs again ...

So, what should we do according to your opinion?

Bye Fridger

Posted: 17.03.2006, 22:46
by Ivvi
Dear Fridger,
now that this seems to be not a bug I am absolutely fine with it. I just thought it might have been my particular bug, 5,874,774 seems a queer limit (lol) - might be 5 mil. or 6 mil. ... Now I am happy again... :D

Thank you so much!

Posted: 19.06.2006, 03:21
by Hungry4info
Speaking of which, anybody notice that you can have time move faster and faster up until a certain point? 1000000000000000x? However you can make it move in reverse as fast as you want? At -100000000000000000000 everything is okay, but you try to go a bit further, and it jumps to -999... more 9's... 9998. And that 8 turns to a 75, etc. After a while, you are going backwards so fast, that time just stops. It usually gets stuc at the year -4712 for me. This "bug" never really bothered me anyway though, since I have really no need for such time deviations.

Posted: 19.06.2006, 09:10
by dirkpitt
Hungry4info wrote:Speaking of which, anybody notice that you can have time move faster and faster up until a certain point? 1000000000000000x? However you can make it move in reverse as fast as you want? At -100000000000000000000 everything is okay, but you try to go a bit further, and it jumps to -999... more 9's... 9998. And that 8 turns to a 75, etc. After a while, you are going backwards so fast, that time just stops. It usually gets stuc at the year -4712 for me. This "bug" never really bothered me anyway though, since I have really no need for such time deviations.


Which version of Celestia were you using?

Posted: 19.06.2006, 12:26
by buggs_moran
This might be an issue one day (Celestia 10.0) when galactic motion and stellar movement is added in. Oh yes and my Intel-Cray Dodecium 3.0 Terahertz system is finally built. :wink:

Posted: 19.06.2006, 19:27
by Hungry4info
I use Celestia Version 1.4.1.

Posted: 20.06.2006, 13:04
by dirkpitt
I downloaded a fresh celestia-osx-1.4.1 from sourceforge and I can't reproduce the -1000000... issue (I fixed this specific bug for 1.4.1... magnitudes are capped at something like 1.0e+/-15).

Are you using the Windows version? (This begs repeating, but please try to include your OS and Celestia version, and basic hardware specs when posting a bug report)

Posted: 22.06.2006, 21:23
by Hungry4info
Oh, sorry about that. Yes, I am indeed using the Windows version of Celestia 1.4.1.