Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to a football field
  • Will pass within 8,290,494 km of Earth in 2021
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

2004 TP1 is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2004 TP1 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

2004 TP1 orbits the sun every 535 days (1.46 years), coming as close as 0.79 AU and reaching as far as 1.79 AU from the sun. Based on its brightness and the way it reflects light, 2004 TP1 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.

Close Approaches

2004 TP1's orbit is 0.03 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.

2004 TP1 has 18 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
April 8, 2021 8,290,494 12.294
Nov. 1, 2026 9,299,595 12.671
April 7, 2043 5,376,652 11.401
Oct. 30, 2048 12,789,371 13.387
April 7, 2065 6,449,298 11.854
Nov. 3, 2070 6,630,686 12.000
April 12, 2087 15,144,809 13.803
Nov. 6, 2092 5,521,114 10.519
March 26, 2112 18,005,053 7.920
Dec. 14, 2114 28,225,046 7.983
Oct. 26, 2117 29,476,766 16.664
April 8, 2134 4,907,076 11.375
Nov. 5, 2139 6,426,525 11.885
April 17, 2156 26,315,304 16.000
Feb. 23, 2159 29,730,050 8.246
Nov. 14, 2161 14,618,241 8.529
April 2, 2181 11,484,043 9.111
Oct. 29, 2186 24,162,958 15.618

Images and Observations

2004 TP1's orbit is determined by observations dating back to Oct. 5, 2004. It was last officially observed on Sept. 13, 2020. The IAU Minor Planet Center records 160 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 2004 TP1:

References

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Orbital Elements

  • Epoch: 2459200.5 JD
  • Semi-major axis: 1.29 AU
  • Eccentricity: 0.3892
  • Inclination: 7.48°
  • Longitude of Ascending Node: 30.07°
  • Argument of Periapsis: 87.78°
  • Mean Anomaly: 322.32°

Physical Characteristics

  • Diameter: ~0.273 km
  • Magnitude: 20.5

Derived Characteristics

  • Orbit Period: 535 days (1.46 years)
  • Avg. Orbit Speed: 26.23 km/s
  • Aphelion Distance: 1.79 AU
  • Perihelion Distance: 0.79 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of 2004 TP1 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 2004 TP1 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.