LONDON (Reuters) - Formula One champions Red Bull have formally appealed against the disqualification of Australian Daniel Ricciardo from his home Grand Prix in Melbourne last weekend, the team said on Thursday.

A spokesman confirmed the necessary documentation had been submitted.

Ricciardo finished second in the race, his debut for Red Bull after joining from Toro Rosso, which was won by Mercedes' Nico Rosberg. He was then disqualified hours later for an illegal fuel flow rate.

Red Bull said on Sunday they intended to appeal and had until Thursday to do so.

No date has been set for any hearing, with Formula One teams heading for Malaysia soon for the second race of the season next week.