Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to Mount Everest (1.80 km diameter)
  • Will pass within 24,409,778 km of Earth in 2085
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation


Syrinx is a mid-sized asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified Syrinx 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.

Syrinx orbits the sun every 1,410 days (3.86 years), coming as close as 0.63 AU and reaching as far as 4.31 AU from the sun. Its orbit is highly elliptical. Syrinx is about 1.8 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to Mount Everest.

Close Approaches

Syrinx's orbit is 0.11 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.

Syrinx has 3 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Nov. 2, 2085 24,409,778 26.054
Oct. 25, 2108 28,996,235 21.253
Nov. 1, 2193 14,397,978 25.345

Images and Observations

Syrinx's orbit is determined by observations dating back to Nov. 4, 1981. It was last officially observed on Jan. 11, 2021. The IAU Minor Planet Center records 547 observations used to determine its orbit.

Accessibility and Exploration

This asteroid is not considered a viable target for human exploration by the NHATS study.

Similar Objects

These objects have orbits that share similar characteristics to the orbit of Syrinx:



   or view a random object

Orbital Elements

  • Epoch: 2459600.5 JD
  • Semi-major axis: 2.466 AU
  • Eccentricity: 0.7459
  • Inclination: 21.15°
  • Longitude of Ascending Node: 242.52°
  • Argument of Periapsis: 63.52°
  • Mean Anomaly: 155.26°

Physical Characteristics

  • Diameter: 1.80000 km
  • Magnitude: 15.94
  • Albedo: 0.17

Derived Characteristics

  • Orbit Period: 1,410 days (3.86 years)
  • Avg. Orbit Speed: 19.03 km/s
  • Aphelion Distance: 4.31 AU
  • Perihelion Distance: 0.63 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of Syrinx 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.

Size Rendering

The above comparison is an artistic rendering that uses available data on the diameter of Syrinx to create an approximate landscape rendering with Mount Everest in the background. This approximation is built for full-resolution desktop browsers. Shape, color, and texture of asteroid are imagined.