461353 (1999 LS7)

Very small Apollo-class Asteroid

Near-Earth Potentially Hazardous
Space Reference » Apollo-class Asteroids » 461353 (1999 LS7)

Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to a football field
  • Will pass within 24,804,815 km of Earth in 2064
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

461353 (1999 LS7) is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 1999 LS7 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

1999 LS7 orbits the sun every 371 days (1.02 years), coming as close as 0.71 AU and reaching as far as 1.31 AU from the sun. Based on its brightness and the way it reflects light, 1999 LS7 is probably between 0.156 to 0.348 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a football field.

Close Approaches

1999 LS7's orbit is 0.05 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.

1999 LS7 has 18 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
June 9, 2064 24,804,815 15.037
June 12, 2065 12,908,099 12.680
June 14, 2066 7,961,294 10.645
June 12, 2067 16,586,094 9.008
June 4, 2068 27,583,872 8.257
Dec. 20, 2077 24,392,513 10.056
Jan. 2, 2079 20,278,557 11.061
Jan. 11, 2080 23,452,523 13.020
June 10, 2131 28,855,767 15.786
June 12, 2132 16,445,836 13.395
June 14, 2133 7,931,990 11.198
June 14, 2134 13,581,121 9.420
June 9, 2135 24,517,958 8.378
Dec. 16, 2144 26,743,368 10.007
Dec. 30, 2145 21,212,953 10.553
Jan. 9, 2147 21,447,245 12.196
Jan. 16, 2148 28,533,936 14.412
June 12, 2199 23,036,422 14.668

Images and Observations

1999 LS7's orbit is determined by observations dating back to June 8, 1999. It was last officially observed on March 3, 2016. The IAU Minor Planet Center records 135 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 1999 LS7:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 1.01 AU
  • Eccentricity: 0.3008
  • Inclination: 13.05°
  • Longitude of Ascending Node: 252.29°
  • Argument of Periapsis: 123.79°
  • Mean Anomaly: 237.01°

Physical Characteristics

  • Diameter: ~0.201 km
  • Magnitude: 21.16

Derived Characteristics

  • Orbit Period: 371 days (1.02 years)
  • Avg. Orbit Speed: 29.62 km/s
  • Aphelion Distance: 1.31 AU
  • Perihelion Distance: 0.71 AU

Map Comparison

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Orbit Simulation

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Sky Map

The position of 461353 (1999 LS7) 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 below comparison is an artistic rendering that uses available data on the diameter of 1999 LS7 to create an approximate landscape rendering with New York City in the background. This approximation is built for full-resolution desktop browsers. Shape, color, and texture of asteroid are imagined.