jupiters moons

[quimby44]

good evening my fellow gazers i have just been outside its a bit cloudy and windy here in Doncaster was just wondering i can only see 2 moons on the right hand side tonight is that right or am i missing some tonight because of wind and cloud cheers stephen

[quimby44]

sorry left hand side

[acey]

You can check them here:

http://www.shallowsky.com/jupiter/

Io was probably transiting when you looked, and Callisto was far out so you missed it.

[quimby44]

thanks acey will keep that web page for future ref

[damnut]

You can also use stellarium to show the position of the moons.

[Qualia]

I find these two handy places to see what Jupiter is up to:

Cal Sky: if you go to "long table of contents" at the top, when this opens you'll see the planet column. Go down to Jupiter and look for number 2:Apparent View. Simply plug in your details, hours you wish to observe, size of Jupiter etc. You'll be able to see the movement of moons, GRS etc.

Jupiter 2: free software program which you can set up with ease and play around as you wish.

[ronin]

Usually you will only get 2, 3 or 4 visible.

They have a habit of hiding in front ot behind Jupiter.

Celestral mechanics tends to not concern itself with humanities observing requirements. :eek:

[ngwillym]

This is handy if you have an android phone/tablet:-

https://play.google.com/store/apps/details?id=astroapps.simulators.jovemoons

[goose35]

I use night sky tools android app. Loads of info on it inclusing moon charts for jupiter and saturn.

I do find it a bit small on a phone though. Bit on a pad its great