2015 HH

Key Facts

• Categorized as a Apollo-class Asteroid
• Comparable in size to a school bus or smaller
• Will pass within 29,130,752 km of Earth in 2026
• Classified as a Near Earth Asteroid (NEA)
• Not a Potentially Hazardous Object
• See orbit simulation

Overview

2015 HH is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2015 HH 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.

2015 HH orbits the sun every 403 days (1.10 years), coming as close as 0.96 AU and reaching as far as 1.18 AU from the sun. Based on its brightness and the way it reflects light, 2015 HH is probably between 0.010 to 0.047 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.

Close Approaches

2015 HH's orbit is 0.03 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.

2015 HH has 8 close approaches predicted in the coming decades:

Images and Observations

2015 HH's orbit is determined by observations dating back to April 16, 2015. It was last officially observed on April 23, 2015. The IAU Minor Planet Center records 41 observations used to determine its orbit.

Accessibility and Exploration

2015 HH can be reached with a journey of 362 days. This trajectory would require a delta-v of 7.961 km/s. To put this into perspective, the delta-v to launch a rocket to Low-Earth Orbit is 9.7 km/s. There are 10,889 potential trajectories and launch windows to this asteroid.

See more at the NHATS Mission Trajectories table for 2015 HH.

Similar Objects

These objects have orbits that share similar characteristics to the orbit of 2015 HH:

• 1566 Icarus (1949 MA)
• 2063 Bacchus (1977 HB)
• 4034 Vishnu (1986 PA)

References

• JPL Small Body Database
• Mission Design
• Sky Finder Chart

Orbit Simulation

Sky Map

The position of 2015 HH 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 2015 HH 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.