Super stallion Deep Impact has died, aged 17.

The Japanese star had to be euthanised after it was found he was unable to stand due to a cervical fracture found by X-ray early on Tuesday morning.

A seven-time Group I winner, Deep Impact was a champion both on and off the track.

Deep Impact won 12 of his 14 career starts, including the highly coveted Japan Cup in 2006.

He was twice a winner of the Japanese Horse Of The Year (2005-2006) and was inducted into the Japan Racing Association Hall Of Fame in 2008.

Deep Impact was retired to stud in 2007 and quickly built a reputation as one of the world’s leading sires.

Deep Impact stood at Shadai Stallion Station and had an approx. service fee of $490,000 Australian in 2019.

He was crowned Japanese Champion Sire for seven consecutive years from 2012 to 2018 and sired stars including Gentildonna, Real Steel and A Shin Hikari.

Group I Mackinnon Stakes and Toorak Handicap (both in 2017) winner Tosen Stardom and 2015 George Ryder champ Real Impact were both sired by the Japanese star.

The death comes just four months after Arrowfield Stud lost star performer Redoute’s Choice aged 22 on March 26.