2011 TC4 is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2011 TC4 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.
2011 TC4 orbits the sun every 666 days (1.82 years), coming as close as 0.42 AU and reaching as far as 2.57 AU from the sun. Its orbit is highly elliptical. Based on its brightness and the way it reflects light, 2011 TC4 is probably between 0.23 to 0.52 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a football field.
2011 TC4's orbit is 0.02 AU from Earth's orbit at its closest point. This means that there is a wide berth between this asteroid and Earth at all times.
2011 TC4 has 11 close approaches predicted in the coming decades:
|Date||Distance from Earth (km)||Velocity (km/s)|
|June 12, 2019||12,732,535||21.381|
|Oct. 28, 2022||10,078,289||25.350|
|June 20, 2039||16,817,389||26.377|
|Nov. 4, 2042||13,017,575||20.854|
|June 14, 2090||8,866,058||22.492|
|Oct. 30, 2093||4,774,867||24.177|
|June 21, 2110||16,886,171||26.377|
|Nov. 5, 2113||13,494,176||20.764|
|June 8, 2161||27,427,713||18.273|
|June 13, 2181||15,298,874||20.844|
|Oct. 28, 2184||15,974,817||26.542|
2011 TC4's orbit is determined by observations dating back to Oct. 3, 2011. It was last officially observed on Sept. 11, 2018. The IAU Minor Planet Center records 66 observations used to determine its orbit.
The position of 2011 TC4 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.