Fast facts about the James Webb Space Telescope

Primary Mirror Stats Mirror Type: Segmented parabolic reflector Width: 21.7 feet (6.6 meters) at its widest point Area: 270 square feet (25 square meters) Mass: 705 kilograms (1,555 pounds on Earth) Focal Length: 414.4 feet (131.4 meters) Optical Resolution: 0.07 arc-seconds, diffraction-limited at 2-micrometer wavelengths (0.0317 arc-second pixels) Material: Beryllium, with a thin coating of gold Number of Segments: 18 segments Observatory Stats Operating Temperature: -390 degrees Fahrenheit (40 kelvins; -235 degrees Celsius) Observatory Mass: About 6,200 kilograms (13,650 pounds on Earth) Sunshield Size: 69.5 by 46.5 feet (21.2 by 14.2 meters) Launch Date: December 25, 2021 at 7:20 a.m. EST Launch Vehicle: Ariane 5 rocket, provided by the European Space Agency Launch Site: The Centre Spatial Guyanais (CSG) in Kourou, French Guiana Location: Orbiting the Sun 1 million miles (1.5 million kilometers) from Earth at the Second Lagrange Point (L2) Orbit Shape: As seen from Earth at midnight, the Webb orbit completes a large loop of 1,000,000 kilometers in diameter twice a year. Transit Time to Orbit: About 1 month Science Mission Lifetime: 5 years, with a goal of 10 years Solar Array Power: 2,000 watts Maximum Data Rate (Deep Space Network): 28 megabits per second (Mbps)