5 replies to this topic

[gitane71]

From Wikipedia, I see that the separation of Xi Scorpio A/B is .744 seconds.

Is this current ? 

What/when is its maximum separation ?

And what sources are you using ?

  Thanks.

 

 

[SebastianTS]

Hi,

 

try stelledoppie.it:

https://www.stelledo...?iddoppia=64864

 

Current separation is 1.13".  All the other information is there, too.

 

CS, Sebastian 

[gitane71]

Thank you, Sebastian.  

!

[gitane71]

I have observed Xi Sco  a few times in the past few years and a few months ago read somewhere that A was a close double.

Last night, observing with a homemade 6" f/10 refractor, I suspected A was double at about 150x with a 10mm Celestron plossl

so, I put in a 6mm plossl and there was a very clear split.  Going in and seeing .74" made me feel pretty good, but I am glad to 

know what it really is.  We've had smoke from Canadian fires and transparency has not been good recently, but last night was 

better and I had time to get out.  It was the highlight of the night.  

[yuzameh]

I have observed Xi Sco  a few times in the past few years and a few months ago read somewhere that A was a close double.

Last night, observing with a homemade 6" f/10 refractor, I suspected A was double at about 150x with a 10mm Celestron plossl

so, I put in a 6mm plossl and there was a very clear split.  Going in and seeing .74" made me feel pretty good, but I am glad to 

know what it really is.  We've had smoke from Canadian fires and transparency has not been good recently, but last night was 

better and I had time to get out.  It was the highlight of the night.  

It is at aphelion in its orbit and seems as though it is going to stay stable at 1.1" for about a decade before it starts closing again, so you should be able to enjoy it for a while yet.

[gitane71]

I have slowly been warming up to doubles and think there are some really fascinating things about them.   To see the motion 

of this star will be something I'll be watching, don't want to miss.  I didn't fully appreciate Castor and Porrima as they were going

through their years of obvious change.  This star gives me another chance to see stars orbiting.