Chi Draconis... uh oh!

Hungry4info · Post #1by **Hungry4info** » 20.07.2007, 22:41

I was cruising around in Celestia 1.5.0pre2 and arrived at Chi Draconis, a binary system. There are two Chi Dra B's, one of them is inclined at some odd angle to the system, both of them are in orbit of the Chi Dra barycentre. Odd setup. Not sure if it's been fixed in pre3.

Cham · Post #2by **Cham** » 20.07.2007, 23:06

There's also something weird in Eps Cet. Three stars orbiting closely on some strange patern.

Apparently, there are some doubles in there. Chi Dra A is doubled. One shouldn't be there. Same thing for Eps Cet B.

ajtribick · Post #3by **ajtribick** » 20.07.2007, 23:42

Same problem as I described in my thread on a similar problem for Delta Equulei: these stars are defined both in visualbins.stc and spectbins.stc.

EDIT:

A bit of Perl hackery later, the following systems come out as being defined in both visualbins and spectbins

EPS Cet, 51 Tau, CHI Dra, 9 Pup

Post #4by **t00fri** » 21.07.2007, 15:39

I know and there are more doubles (entered with different names!)

I'll commit the changes in time before the next version. Since Chris has vanished since weeks, there seems to be no hurry.

Bye Fridger

Cham · Post #5by **Cham** » 02.09.2007, 21:37

Fridger,

we need to test the new version before Chris is back (since we may wait for him for a very long time again). This may be important to find any other problems. If you don't see any troubles with the files for now, I suggest you commit them. They may be useful to some users too, in the meantime.

Post #6by **t00fri** » 02.09.2007, 21:49

Cham wrote:Fridger,

we need to test the new version before Chris is back (since we may wait for him for a very long time again). This may be important to find any other problems. If you don't see any troubles with the files for now, I suggest you commit them. They may be useful to some users too, in the meantime.

I try to do it, but as you know we are VERY busy right now. Yesterday it went to 4:00 am ;-)

You underestimate the time it takes after several months to get back to this tedious binary star stuff. After all we want all to do it right this time, don't we?

Bye Fridger

Cham · Post #7by **Cham** » 11.09.2007, 02:40

t00fri wrote:I know and there are more doubles (entered with different names!)

I'll commit the changes in time before the next version. Since Chris has vanished since weeks, there seems to be no hurry.

Please Fridger, can you tell which other doubles there are in the files ? I have identified these as doubles :

Chi Dra (two times)
Eps Cet (two times)
51 Tau (two times)
9 Pup (two times)
HIP7580 and Kui 7
70 Tau and Fin 342
HIP2941 and ADS 520
HIP111528 and ADS 16098
81 Cnc and Fin 347Aa
Eta CrB (two times)
HIP85667 and SIG 2174
HIP87895 and HR 6697
HIP95995 and Gl 762.1
HIP98416 and Gl 773.3
HIP99376 and ADS 13461

We need this to be fixed. It's a shame to leave Celestia in this state.