How big was stephensons rocket?

Stephenson's Rocket, designed by George Stephenson in 1829, was about 15 feet (4.5 meters) long and weighed approximately 1.5 tons (1,360 kg). It featured a vertical boiler and had a maximum speed of around 30 miles per hour (48 km/h). The locomotive was significant for its innovative design and performance, marking a key development in the history of steam locomotion.