Note satellite? In it, strange rebuke! (10)
I believe the answer is:
admonition
'rebuke' is the definition.
(admonition is a kind of rebuke)
'note satellite? in it strange' is the wordplay.
I cannot really see how this works, but
'note' could be 'ti' (musical note as in do re mi fa so la ti) and 'ti' is found in the answer.
'satellite?' could be 'io' (Io is a moon of Jupiter) and 'io' is found within the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for admonition that I've seen before include "reprimand" , "Rebuke" .)