Key Facts

  • Classified as a Aten-class Asteroid
  • Comparable in size to the Golden Gate Bridge (0.70 km diameter)
  • Will pass within 16,715,441 km of Earth in 2044
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

Khufu is a very small asteroid whose orbit could bring it in close proximity to Earth. NASA JPL has classified Khufu as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

Khufu orbits the sun every 360 days (0.98 years), coming as close as 0.53 AU and reaching as far as 1.45 AU from the sun. Khufu is about 0.7 kilometers in diameter, making it a small to average asteroid, comparable in size to the Golden Gate Bridge.

Close Approaches

Khufu's orbit is 0.01 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.

Khufu has 20 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Aug. 24, 2044 16,715,441 18.440
Aug. 22, 2045 3,165,779 15.719
Aug. 20, 2046 10,582,610 13.324
Aug. 20, 2047 23,511,647 11.261
Dec. 28, 2064 22,990,643 13.568
Dec. 24, 2065 22,860,585 16.377
Aug. 28, 2107 20,672,171 19.226
Aug. 23, 2108 6,724,145 16.456
Aug. 21, 2109 7,222,647 13.925
Aug. 21, 2110 21,000,359 11.607
Dec. 31, 2126 23,755,868 13.106
Dec. 26, 2127 22,402,171 16.084
Dec. 21, 2128 29,805,157 19.111
Aug. 30, 2167 27,906,466 20.662
Aug. 25, 2168 13,576,818 17.804
Aug. 23, 2169 1,685,602 15.124
Aug. 21, 2170 15,623,755 12.453
Jan. 3, 2186 28,348,853 11.468
Dec. 29, 2186 21,931,021 14.498
Dec. 24, 2187 25,336,299 17.599

Images and Observations

Khufu's orbit is determined by observations dating back to Aug. 30, 1984. It was last officially observed on Nov. 27, 2004. The IAU Minor Planet Center records 266 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 Khufu:

References

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Orbital Elements

  • Epoch: 2458600.5 JD
  • Semi-major axis: 0.989537560451 AU
  • Eccentricity: 0.468517424728
  • Inclination: 9.91683835335°
  • Longitude of Ascending Node: 152.437652644°
  • Argument of Periapsis: 55.0538190947°
  • Mean Anomaly: 157.314794866°

Physical Characteristics

  • Diameter: 0.70000 km
  • Magnitude: 18.3
  • Albedo: 0.21

Derived Characteristics

  • Orbit Period: 360 days (0.98 years)
  • Avg. Orbit Speed: 29.94 km/s
  • Aphelion Distance: 1.45 AU
  • Perihelion Distance: 0.53 AU

Size Comparison

Orbit Simulation

Sky Map

The position of Khufu 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.