2011 SP145

Small Outer Main-belt Asteroid

Space Reference » Outer Main-belt Asteroids » 2011 SP145

Key Facts

Overview

2011 SP145 is a small asteroid that orbits between Mars and Jupiter in the outer reaches of the main asteroid belt. NASA JPL has not classified 2011 SP145 as potentially hazardous because its orbit does not bring it close to Earth.

2011 SP145 orbits the sun every 3,490 days (9.56 years), coming as close as 1.60 AU and reaching as far as 7.41 AU from the sun. Based on its brightness and the way it reflects light, 2011 SP145 is probably between 0.677 to 1.514 kilometers in diameter, making it larger than ~97% of asteroids but small compared to large asteroids, very roughly comparable in size to the Golden Gate Bridge.

No Close Approaches

Orbital simulations conducted by NASA JPL's CNEOS do not show any close approaches to Earth.

Images and Observations

2011 SP145's orbit is determined by observations dating back to Sept. 26, 2011. It was last officially observed on Sept. 28, 2011. The IAU Minor Planet Center records 13 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 2011 SP145:

References

Search

   or view a random object

Orbital Elements

  • Epoch: 2459400.5 JD
  • Semi-major axis: 4.504 AU
  • Eccentricity: 0.6452
  • Inclination: 3.49°
  • Longitude of Ascending Node: 309.04°
  • Argument of Periapsis: 325.24°
  • Mean Anomaly: 28.18°

Physical Characteristics

  • Diameter: ~0.874 km
  • Magnitude: 17.97

Derived Characteristics

  • Orbit Period: 3,490 days (9.56 years)
  • Avg. Orbit Speed: 14.04 km/s
  • Aphelion Distance: 7.41 AU
  • Perihelion Distance: 1.60 AU

Map Comparison

Click to load map

Orbit Simulation

⧉

Sky Map

The position of 2011 SP145 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 2011 SP145 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.