109P/Swift-Tuttle is a large comet with a medium-length orbit that is highly inclined to the ecliptic plane of the solar system. NASA JPL has classified 109P/Swift-Tuttle as a "Near Earth Asteroid" due to its orbit's proximity to Earth, but it is not considered potentially hazardous because computer simulations have not indicated any imminent likelihood of future collision.
109P/Swift-Tuttle orbits the sun every 48,700 days (133.33 years), coming as close as 0.96 AU and reaching as far as 51.22 AU from the sun. Its orbit is highly elliptical. 109P/Swift-Tuttle is about 26.0 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the city of Indianapolis.
109P/Swift-Tuttle's orbit is 0.00 AU from Earth's orbit at its closest point. This means that its orbit is very close to Earth's orbit.
109P/Swift-Tuttle has 1 close approaches predicted in the coming decades:
|Date||Distance from Earth (km)||Velocity (km/s)|
|Aug. 5, 2126||22,944,892||58.340|
109P/Swift-Tuttle's orbit is determined by observations dating back to July 8, 1737. It was last officially observed on March 29, 1995. The IAU Minor Planet Center records 652 observations used to determine its orbit.
The position of 109P/Swift-Tuttle is indicated by a ◯ pink circle. Note that the object may not be in your current field of view. Use the controls below to adjust position, location, and time.