Astronomers Identify Second Earth Trojan Asteroid astronomy space science
“Trojans are objects sharing an orbit with a planet, clustered around one of two special gravitationally balanced areas along the orbit of the planet known as Lagrange points,” said Dr. Cesar Briceño, an astronomer with NSF’s NOIRLab.
Early observations suggested that it could be an Earth Trojan asteroid, but due to low observational coverage, orbital uncertainties were too large for confirmation. To study its orbit, they used archival data from 2012 to 2019 and observed the object in 2021 from three ground-based observatories.
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