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1999 AO10

Sub-kilometer sized asteroid


Sub-kilometer sized asteroid

FieldValue
minorplanetyes
name
background#FFC2E0
discovery_ref
discovererLINEAR
discovery_siteLincoln Laboratory's ETS
discovered13 January 1999
(first observation only)
mpc_name
mp_categoryNEOAten
orbit_ref
epoch21 November 2025 (JD 2461000.5)
uncertainty1
observation_arc9865 days
aphelion1.0133 AU
perihelion0.8109477 AU
semimajor0.9121214 AU
eccentricity0.1109213
period0.87 yr (318 days)
mean_anomaly88.563°
mean_motion/ day
inclination2.62399°
asc_node313.05°
arg_peri7.9568°
moid0.0213 AU8.3 LD
dimensions0.05 km (est. at 0.20
abs_magnitude24.35

(first observation only)

**** is a sub-kilometer sized asteroid, classified as near-Earth object of the Aten group, approximately 50 meters in diameter. It was first observed on 13 January 1999, by the LINEAR project at Lincoln Laboratory's ETS near Socorro, New Mexico, United States. The asteroid has been the target of a proposed mission.

Orbit

orbits the Sun at a distance of 0.8–1.0 AU once every 10 months (318 days). Its orbit has an eccentricity of 0.11 and an inclination of 3° with respect to the ecliptic. The initial orbital elements were determined based on 16 observations made between January 13–15, 1999.

The asteroid has an Earth minimum orbital intersection distance of 0.0220 AU, which translates into 8.6 lunar distances.

Crewed mission

NASA has proposed a crewed mission to the object during 2025 or later. is one of a handful of objects within the acceptable range for the mission and is also one of the largest objects that meets the qualifications. In this proposal, a pair of docked Orion spacecraft would spend 14 days at the object, for a total mission time of 155 days. The astronauts would return samples and help test spacefaring capabilities for a future Mars mission. The crewed mission would be preceded by an unmanned probe to be sent in 2019 at the earliest.

References

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References

  1. (10 January 2010). "NASA's Flexible Path evaluation of 2025 human mission to visit an asteroid".
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