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  2. 2021 UA1 - Wikipedia

    en.wikipedia.org/wiki/2021_UA1

    2021 UA 1 is a small (~2 meter) near-Earth object that passed about 3047 km from the surface of Earth while passing over Antarctica on 25 October 2021 around 03:07 UT. [ 5 ] [ a ] Given the small size of the asteroid it only reached the brightness of Pluto at around apparent magnitude 14 . [ 5 ]

  3. 2021 PH27 - Wikipedia

    en.wikipedia.org/wiki/2021_PH27

    The object was then provisionally designated 2021 PH 27 by the Minor Planet Center and announced on 21 August 2021. [1] Even in April 2021, the asteroid was never more than 45 degrees from the Sun. [11] Precovery observations of 2021 PH 27 were found in archival Dark Energy Survey images from 16 July 2017. These observations were published by ...

  4. List of asteroid close approaches to Earth in 2021 - Wikipedia

    en.wikipedia.org/wiki/List_of_asteroid_close...

    The largest asteroid to pass within 1 LD of Earth in 2021 was 2021 SG with an estimated diameter of around 68 meters and an absolute magnitude of 24.0. The fastest asteroid to pass within 1 LD of Earth in 2021 was 2021 UA 7 that passed Earth with a velocity with respect to Earth of 27.7 km/s (62,000 mph).

  5. Watch live: Nasa spacecraft returns to Earth with largest ...

    www.aol.com/watch-live-nasa-spacecraft-returns...

    Watch live as a Nasa spacecraft returns to Earth with the largest asteroid sample in history on Sunday 24 September. After a seven-year, four-billion-mile journey across space, the ambitious NASA ...

  6. 2021 SG - Wikipedia

    en.wikipedia.org/wiki/2021_SG

    It completes its highly eccentric orbit in 2.24 years. 2021 SG is an Apollo asteroid with a 1.71 AU semimajor axis, and a 0.473 AU perihelion (near Mercury at perihelion) out to a 2.95 AU aphelion (between Mars and Jupiter). With an absolute magnitude (H) of 24.0, it is possibly the largest asteroid to pass within 1 lunar distance of Earth ...

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  8. How to watch a stadium-sized asteroid zoom by Earth this week

    www.aol.com/news/watch-stadium-sized-asteroid...

    Another gigantic asteroid will come within Earth's neighborhood on Wednesday, and Earthlings can watch it live online, knowing it's at a safe distance.

  9. 2021 TP21 - Wikipedia

    en.wikipedia.org/wiki/2021_TP21

    2021 TP 21 is an Apophis-sized asteroid that was discovered on 11 October 2021 when it was 0.5 AU (75 million km) from Earth. [1] This potentially hazardous asteroid (PHA) spends most or its orbit closer to 4 AU (600 million km) from the Sun as objects orbit more slowly when near aphelion (furthest distance from the Sun).