GROWTH-India Telescope

News Excerpt:

The GROWTH-India Telescope recently achieved a remarkable feat, capturing images of a 116-meter asteroid, designated 2011 MW1, as it made its closest approach to Earth.

More about the image:

  • The telescope recorded the asteroid passing at a distance of just 10 times the lunar distance from Earth, travelling at an astonishing speed of 28,946 kilometres per hour.
  • As a Near Earth Asteroid (NEA), 2011 MW1's swift motion was so pronounced that it caused background stars to appear as streaks in the images captured by the telescope. 
  • This observation is a part of the GROWTH-India project's broader mission to study fast transients and variable sources in the universe.

GROWTH-India Telescope:

  • Located at the Indian Astronomical Observatory in Hanle, Ladakh, the GROWTH-India Telescope, India's first fully robotic optical research telescope, is a collaborative initiative involving the Indian Institute of Astrophysics (IIA) and the Indian Institute of Technology Bombay (IITB).
  • The project is supported by the Department of Science and Technology (DST) and the Indo-US Science and Technology Forum.
  • As part of the Global Relay of Observatories Watching Transients Happen (GROWTH) network, the telescope contributes to a global effort to provide continuous monitoring of celestial events.
  • The primary mission of the GROWTH-India Telescope is to observe explosive transients and variable sources, including near-Earth asteroids.
  • Its advanced imaging technology allows for detailed tracking and study of fast-moving objects in the sky, making it a critical tool for understanding the dynamics and potential threats posed by these objects.

The successful observation of 2011 MW1 exemplified the telescope's capability to monitor and analyze near-Earth objects, contributing valuable data to the global scientific community.

2011 MW1

  • Asteroid 2011 MW1 is an Apollo-class Near Earth Asteroid (NEA) measuring approximately 380 feet, comparable to a skyscraper's size.
    • A Near Earth Asteroid (NEA) is a type of asteroid that has an orbit bringing it close to Earth's orbit. Specifically, NEAs are defined as having a perihelion distance (closest point to the Sun) of less than 1.3 astronomical units (AU) from the Sun.
    • Since Earth's average distance from the Sun is 1 AU, this means NEAs can come relatively close to Earth.
  • It recently made a close approach to Earth, passing at a speed of 28,946 km/h, with its nearest distance being 2.4 million miles. 
  • Despite its size, 2011 MW1 does not fall under the category of Potentially Hazardous Asteroids (PHAs), as it does not meet the criteria of being over 460 feet in size or coming within 7.5 million kilometres of Earth's orbit. 
  • While NASA's Jet Propulsion Laboratory monitors its trajectory, the asteroid poses no threat to Earth. 
  • Asteroids like 2011 MW1 are remnants from the early solar system and primarily orbit the sun, providing insights into our solar system's formation.

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