Ptah is a mid-sized asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified Ptah as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.
Ptah orbits the sun every 765 days (2.09 years), coming as close as 0.82 AU and reaching as far as 2.45 AU from the sun. Based on its brightness and the way it reflects light, Ptah is probably between 1.395 to 3.119 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to Mount Everest.
Ptah's orbit is 0.02 AU from Earth's orbit at its closest point. This means that there is an wide berth between this asteroid and Earth at all times.
Ptah has 16 close approaches predicted in the coming decades:
|Date||Distance from Earth (km)||Velocity (km/s)|
|Nov. 3, 2027||28,595,547||17.437|
|Feb. 11, 2030||26,040,283||9.686|
|Nov. 10, 2050||15,813,082||14.131|
|March 9, 2053||14,457,290||10.070|
|Nov. 13, 2073||13,678,748||12.975|
|March 14, 2076||10,156,063||10.815|
|Nov. 9, 2096||17,345,429||14.589|
|March 4, 2099||18,235,074||9.628|
|Nov. 6, 2119||28,151,051||17.275|
|Feb. 11, 2122||26,557,353||9.778|
|Dec. 30, 2144||28,825,446||9.703|
|April 3, 2147||23,167,668||17.002|
|Nov. 23, 2167||16,231,711||10.657|
|March 23, 2170||2,918,959||12.493|
|Nov. 10, 2190||19,771,265||15.128|
|Feb. 28, 2193||20,863,641||9.479|
Ptah's orbit is determined by observations dating back to Sept. 24, 1960. It was last officially observed on June 21, 2020. The IAU Minor Planet Center records 617 observations used to determine its orbit.
The position of Ptah 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.