Every fingering that fits a hand
3211
moderate
321x
easy
3565
hard
xaa8
easy
What is true of it
A♯ is A♯, C𝄪 and E♯ — 1, 3 and 5 counted from A♯.
C𝄪 is a double sharp, and it has to be: every letter from A♯ upwards is used once, so the 3 cannot be written any other way.
On an instrument that cannot reach all 3, the 5 goes first, in that order.
The easiest of the 4 fingerings below is 3211: 4 fingers, held at the 1st fret.
None of them uses an open string, so this chord moves up the neck unchanged — the same shape 1 fret higher is the chord a semitone above.
Where its notes are on the neck
The brass dots are A♯, the root. Everything else is a chord tone with its degree printed in it.
With a different note underneath
A♯/C𝄪
x211
A♯/E♯
aaax
An inversion is the same chord with a different note lowest. The name changes to a slash name because the bass is what a listener hears as the foundation.