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Image: National Institute of Astronomy, Fan Page
Apr 29 63 – Time 16:56 hrs. Today is Thailand time. Asteroid 1998 OR2 will orbit our planet. And it will be closer to Earth at a distance of 6.2 million kilometers (approximately 16 times the average distance from Earth to the moon), with a diameter of more than 2.15 kilometers (approximately Doi Inthanon), not just close to Earth Object: NEO), but is classified as a potentially dangerous asteroid (PHA) and is especially noted
The Near Earth Asteroid Tracking Program (NEAT) is located at the Halakala Observatory. Asteroid 1998 OR2 was discovered on July 24, 1998. Astronomers know the asteroid’s orbit very well. And placed in the Amor group of asteroids, the closest point to the Sun in orbit (Perihilion) beyond Earth’s orbit.This focus is the second in the 21st century (the first is May 31, 2013). The next one will occur in 2079, with a closer distance of 1.8. Millions of kilometers (about 4.7 times the average distance from Earth to the moon), which monitoring collected over 30 years from observatories around the world. Make astronomers trust this calculation a lot
The last astronomers from the Arecibo Observatory collected the data from the 1998 OR2 asteroids that were approaching Earth at this time. With a radio telescope Help confirm the data that has been calculated, for example, the exact diameter is 2.15 kilometers, rotates by yes only in 4.1 hours and has an absolute brightness index of 15.7 etc.
Study of orbits of asteroids and near-Earth objects. It is an international cooperation For example Data from small observatories located around the world help to make accurate orbital calculations. A small telescope can also shoot the 1998 OR2 close to Earth. The brightness index appears during the approach to Earth at 11, in which the planets will appear in the Hydra constellation. Move in the sky at an angular distance of 1 degree every 1 hour 45 minutes
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Compiled: Sittiphon Duwtakhu – Information Officer, Astronomy Experience
Reference:
1) https://minorplanetcenter.net/
2) https://ssd.jpl.nasa.gov/
3) https://skyandtelescope.org/
4) https://www.universetoday.com/…/watch-asteroid-1998-or2-zi …… /
5) https://en.wikipedia.org/
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