Key Facts

Overview

85770 (1998 UP1) is a very small asteroid whose orbit could bring it in close proximity to Earth. NASA JPL has classified 1998 UP1 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.

1998 UP1 orbits the sun every 365 days (1.00 years), coming as close as 0.65 AU and reaching as far as 1.34 AU from the sun. Based on its brightness and the way it reflects light, 1998 UP1 is probably between 0.211 to 0.472 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a football field.

No Close Approaches

1998 UP1's orbit is 0.09 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.

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

Images and Observations

1998 UP1's orbit is determined by observations dating back to Oct. 12, 1990. It was last officially observed on Oct. 13, 2016. The IAU Minor Planet Center records 489 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 1998 UP1:

References

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Orbital Elements

  • Epoch: 2453837.5 JD
  • Semi-major axis: 0.998740499503 AU
  • Eccentricity: 0.344939487401
  • Inclination: 33.1778354442°
  • Longitude of Ascending Node: 18.4051898872°
  • Argument of Periapsis: 234.377549294°
  • Mean Anomaly: 273.783556616°

Physical Characteristics

  • Diameter: ~0.273 km
  • Magnitude: 20.5

Derived Characteristics

  • Orbit Period: 365 days (1.00 years)
  • Avg. Orbit Speed: 29.80 km/s
  • Aphelion Distance: 1.34 AU
  • Perihelion Distance: 0.65 AU

Size Comparison

Orbit Simulation

Sky Map

The position of 85770 (1998 UP1) 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.