I was observing with the NASA funded, Catalina Sky Survey, 60 inch telescope on Mt. Lemmon, when I found an interesting moving point of light in the night sky. It appeared to be on the path of an Earth approaching asteroid. I submitted my observations to the Minor Planet Center. Telescopes in Germany, New Mexico, Illinois, Pennsylvania, and England observed it. The Minor Planet Center used these data to calculate an orbit. This orbit revealed the asteroid to be large enough and close enough to classify it as a Potentially Hazardous Asteroid. It was given the name 2015 BY310. A few days later the Minor Planet Center connected the observations of the object that they had been calling 2015 BY310 with an asteroid 2000 BK19. It had been discovered 15 years previously by the Lincoln Near-Earth Asteroid Research Program in New Mexico. These new data confirm that it is is an Earth approaching asteroid but that it is slightly smaller than is required to give it the potentially hazardous label.

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