Seems to be so. It's a very useful model parameter at least, isn't it?
Jupiter Moons
Re: Jupiter Moons
WP43 SN00000, 34S, and 31S for obvious reasons; HP-35, 45, ..., 35S, 15CE, DM16L S/N# 00093, DM42β SN:00041
Re: Jupiter Moons
What do you mean by "Seems to be so.", you mean Time really exists or your calc, or the Jupiter program do exist ?
I am really wondering as reading Carlo Rovelli, Etienne Kein, Aurélien Barrau... and so many Others (Schrodinger, Hawking... for example) if time really exists. I am not talking about your watch, or just about time on earth, neither in the Universe...
Really strange question "Does Time really exists ?", and 42 number recently discovered will not change my mind...
Of course we will die, but will time die with us ? Hum...
Sorry Walter to pollute your answer to my comment.
I was just wondering.
PS : there is a bug in this Jupiter (nice program) it does not take care of gravity and Calllisto will quit Jupiter in some ...years... or a little bit more.... But it will quit. Don't ask me the Day/Month/Hour as there is no time in this "present" universe And Io and Europe and Ganymede will leave too.
HP33E, HP34C, HP41C, HP16C, HP28S, HP42S, HP48S, HP12C, HP35S, DM42, DM41L, DM15L, DM41X (SN#15) and HP3000 @ work during 18 yrs as IT Mgr
Re: Jupiter Moons
I get "Invalid Data" error when I run this program on my DM42 s/n6476. I tried it with the data in the example and same result.
DM42 (#6476), DM41X (#458), DM15, 12 - HP 12, 17BII, 35(2), 45, HP 27S, 28S, 30B, 41CV, 41CX, 42S, 48S, 35S, HP10bII+, 12C PLAT
I may have a problem!
I may have a problem!
Re: Jupiter Moons
I managed to get the same "Invalid data" with my newly received DM-42 when running Jupiter after an initial successful run. It was because somehow I deleted the REGS matrix. Don't know exactly how I did it... I restored it (SIZE 100) and Jupiter then worked again like a charm. Reason was that there was no place in the calculator to store the registers the program needs to work properly.
And now we're talking about it, anybody hacked the program to admit the current date/time as an input? that would be great. I'm afraid I'm not yet proficient enough with this programming language to do it myself
And now we're talking about it, anybody hacked the program to admit the current date/time as an input? that would be great. I'm afraid I'm not yet proficient enough with this programming language to do it myself
Re: Jupiter Moons
I have modified the program, if you do not enter the input date and time, it will automatically be set to the current values. Remember that the time is in UT (Universal Time). Have a nice day!
Calculate the positions of the 4 Galilean satellites of Jupiter on 5 October 2019 at 0h 50m 10s UT
10.52019 ENTER
0.5010 XEQ "Jupiter"
STOP - stop the program, you can see Y = DATE DD.MMYYYY, Z = HH.MMSS
<REW - animation rearwards
◼ - stop animation
FRW> - animation forward
HOUR+ - one hour forward
HOUR- - one hour rearwards
Calculate the positions of the 4 Galilean satellites of Jupiter on 5 October 2019 at 0h 50m 10s UT
10.52019 ENTER
0.5010 XEQ "Jupiter"
STOP - stop the program, you can see Y = DATE DD.MMYYYY, Z = HH.MMSS
<REW - animation rearwards
◼ - stop animation
FRW> - animation forward
HOUR+ - one hour forward
HOUR- - one hour rearwards
- Attachments
-
- Jupiter.raw
- (934 Bytes) Downloaded 130 times
Re: Jupiter Moons
Thanks a lot!
I can get it to work if I set the date & time, i.e.:
02.222010 ENTER
9.14
XEQ "Jupiter"
...but I cannot make it to work if X and Y are not set (0). It fails with "Invalid Data". Am I doing something wrong?
I can get it to work if I set the date & time, i.e.:
02.222010 ENTER
9.14
XEQ "Jupiter"
...but I cannot make it to work if X and Y are not set (0). It fails with "Invalid Data". Am I doing something wrong?
Re: Jupiter Moons
Maybe is a problem with the set format date in the calculator? In Europe we have D/M/Y, in the USA is Y/M/D.
Re: Jupiter Moons
Well, I live in Europe too and use D/M/Y as the date format in my DM42 but I cannot use this format with Jupiter. The only way I can make it to work is using M/D/Y format as you can see in my previous post. For instance, for today, if I key in::
02.222021 ENTER
18.30
XEQ "Jupiter"
then all goes fine, but if I type:
22.022021 ENTER
18.30
XEQ "Jupiter"
...then I get the "Invalid Data" message. And still don't know how to make it use the current DM42's date and hour. You said:
"if you do not enter the input date and time, it will automatically be set to the current values."
I assumed that this was having 0 in both X and Y but then I get "Invalid Data" again
02.222021 ENTER
18.30
XEQ "Jupiter"
then all goes fine, but if I type:
22.022021 ENTER
18.30
XEQ "Jupiter"
...then I get the "Invalid Data" message. And still don't know how to make it use the current DM42's date and hour. You said:
"if you do not enter the input date and time, it will automatically be set to the current values."
I assumed that this was having 0 in both X and Y but then I get "Invalid Data" again
Re: Jupiter Moons
I understand, I modified the program for switching time format, please try it.