143649 (2003 QQ47)

Mid-sized Apollo-class Asteroid

Near-Earth Potentially Hazardous
Space Reference » Apollo-class Asteroids » 143649 (2003 QQ47)

Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to the U.S. Pentagon
  • Will pass within 14,737,644 km of Earth in 2021
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

143649 (2003 QQ47) is a mid-sized asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2003 QQ47 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

2003 QQ47 orbits the sun every 413 days (1.13 years), coming as close as 0.88 AU and reaching as far as 1.29 AU from the sun. Based on its brightness and the way it reflects light, 2003 QQ47 is probably between 0.884 to 1.977 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the U.S. Pentagon.

The rotation of 2003 QQ47 has been observed. It completes a rotation on its axis every 2.64 hours.

Close Approaches

2003 QQ47's orbit is 0.00 AU from Earth's orbit at its closest point. This means that its orbit is relatively close to Earth's orbit.

2003 QQ47 has 24 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Sept. 23, 2021 14,737,644 30.228
March 19, 2031 12,946,000 31.177
March 27, 2040 23,406,393 32.652
Sept. 25, 2047 14,168,636 30.115
March 19, 2057 10,366,279 31.221
March 28, 2066 24,628,025 32.736
Sept. 24, 2073 14,089,258 30.124
March 19, 2083 11,701,729 31.199
March 27, 2092 22,337,296 32.576
Sept. 24, 2099 14,409,425 30.232
March 19, 2109 15,835,183 31.107
March 27, 2118 17,593,846 32.310
Sept. 24, 2125 16,155,898 30.453
Sept. 30, 2134 27,531,393 29.576
March 18, 2135 21,133,277 31.049
March 25, 2144 12,423,650 32.026
Sept. 24, 2151 18,752,414 30.652
Sept. 29, 2160 24,221,507 29.637
March 17, 2161 25,229,497 31.009
March 25, 2170 9,007,910 31.868
Sept. 23, 2177 20,265,816 30.780
Sept. 29, 2186 23,609,439 29.634
March 18, 2187 25,929,436 31.005
March 25, 2196 9,900,166 31.904

Images and Observations

2003 QQ47's orbit is determined by observations dating back to Aug. 24, 2003. It was last officially observed on May 9, 2023. The IAU Minor Planet Center records 1,161 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 2003 QQ47:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 1.085 AU
  • Eccentricity: 0.187
  • Inclination: 62.1°
  • Longitude of Ascending Node: 0.99°
  • Argument of Periapsis: 104.96°
  • Mean Anomaly: 185.43°

Physical Characteristics

  • Diameter: ~1.142 km
  • Magnitude: 17.39

Derived Characteristics

  • Orbit Period: 413 days (1.13 years)
  • Avg. Orbit Speed: 28.58 km/s
  • Aphelion Distance: 1.29 AU
  • Perihelion Distance: 0.88 AU
  • Rotation Period: 2.64 hours

Map Comparison

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Orbit Simulation

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Sky Map

The position of 143649 (2003 QQ47) 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 2003 QQ47 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.