Astrometry and Photometry When not performing OSETI observations, appropriately trained observers can make precise measurements of the position and magnitude of recently discovered or poorly observed ...

Astrometry — mapping the locations and movements of celestial objects — was once a central concern in astronomy, with roots going back to ancient Babylon and China.

long-proposed method of searching for extrasolar planets has finally discovered one — a body six times heavier than Jupiter that orbits a dwarf star 20 light-years from Earth.

The first VERA Astrometry Catalog was published this year and includes data for 99 objects. Positioning indicates that Earth orbits the Galactic Center, where the black hole is located, at 227 km/s.

I was preparing for my early morning class back in January 2025 when I received a notice regarding an asteroid called 2024 YR4. It said the probability it could hit Earth was unusually high. As ...

A small asteroid burned up in Earth's atmosphere off the coast of California just hours after being discovered and before impact monitoring systems had registered its trajectory.

ABSTRACT.Precision astrometry at microarcsecond accuracy has applications for a wide range of astrophysical problems. This paper is a study of the science questions that can be addressed using an ...

Astrometry wasfirst attempted 50 years ago to search for planets outside our solar system, butthe method requires very precise measurements over long periods of time, anduntil now, has failed to ...

When not performing OSETI observations, appropriately trained observers can make precise measurements of the position and magnitude of recently discovered or poorly observed asteroids and comets.