List of asteroid close approaches to Earth, List of asteroid close approaches to Earth in 2019, List of asteroid close approaches to Earth in 2021, "New Data Confirm 2020 SO to be the Upper Centaur Rocket Booster from the 1960's", "JPL Small-Body Database Search Engine: unnumbered objects and PHAs", https://en.wikipedia.org/w/index.php?title=List_of_asteroid_close_approaches_to_Earth_in_2020&oldid=1016417557, Creative Commons Attribution-ShareAlike License, Time of discovery of asteroids which came closer to Earth than the Moon in 2020, This page was last edited on 7 April 2021, at 01:56. For comparison, since a satellite in a geostationary orbit has an altitude of about 36,000 km (22,000 mi), then its geocentric distance is 0.11 LD (approximately three times the width of the Earth). [3] Below are lists of close approaches less than one LD for a given year. The year 2011 was notable as two asteroids with size 100 m (330 ft) or more approached within one lunar distance. It was detected by the Zwicky Transient Facility on Sunday, Aug. 16 at 12:08 a.m. EDT (Saturday, Aug. 15 at 9:08 p.m. PDT). 2020 QG—Closest asteroid flyby to not hit Earth, at 2,900 km (1,800 mi), closest approach on 16 August 2020. The asteroid, known as 2021 GW4, traveled at 18,700 miles per hour when it passed the planet. Rows highlighted blue indicate objects discovered more than one year before closest approach, i.e. See the. Asteroids smaller than about 50 m (160 ft). [1], .mw-parser-output .legend{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .legend-color{display:inline-block;min-width:1.25em;height:1.25em;line-height:1.25;margin:1px 0;text-align:center;border:1px solid black;background-color:transparent;color:black}.mw-parser-output .legend-text{}  Rows highlighted red indicate objects which were not discovered until after closest approach, Rows highlighted yellow indicate objects discovered less than 24 hours before closest approach, Rows highlighted green indicate objects discovered more than one week before closest approach, Rows highlighted turquoise indicate objects discovered more than 7 weeks before closest approach, Rows highlighted blue indicate objects discovered more than one year before closest approach (i.e. With an arc of 1.5 hours and 6 observations, there is a roughly 40% chance it passed further than 0.1 LD, with a maximum distance of 0.13 LD. The sizes of the charts show the relative sizes of the asteroids to scale. the asteroid is unconfirmed and will likely never receive a provisional designation. Objects that approached closer to the Moon than Earth are marked with a check. As sky surveys improve, smaller and smaller asteroids are regularly being discovered. A group of researchers managed to find 23 fragments of the asteroid … The asteroid named 2018 LA began to break up as it entered Earth's atmosphere at 38,000 miles per hour. Near-Earth object detection technology greatly improved about 1998, so objects being detected as of 2004 could have been missed only a decade earlier due to a lack of dedicated near-Earth astronomical surveys. Objects with distances greater than 100 km (62 mi) are listed here, although there is no discrete beginning of space. NASA, Near Earth Object Program, database, hundreds of objects that collided with Earth, Earth-grazing meteoroid of 13 October 1990, "Near Earth Asteroids (NEAs): A Chronology of Milestones", "Responding to Potential Asteroid Redirect Mission Targets", "Asteroids and Adversaries: Challenging What NASA Knows About Space Rocks - Relevant Comments", "Solar System Exploration: Planets: Earth's Moon: Facts & Figures", "Small asteroid detected 4 days after passing as close as satellites", "Very Small Asteroid Makes Close Earth Approach on February 4, 2011", "Closest Approaches to the Earth by Minor Planets", https://www.minorplanetcenter.net/mpec/K20/K20Q51.html. For reference, the radius of Earth is about 0.0000426 AU (6,370 km; 3,960 mi) or 0.0166 lunar distances. An example list of near-Earth asteroids that passed or will pass more than 1 lunar distance (384,400 km or 0.00256 AU) from Earth in 2020. The Near Earth Asteroid, or NEA, passed 1,830 miles above the Southern Indian Ocean around midnight (12:08am EST) Sunday morning. At its closest approach to earth, shortly before 6 p.m. The uncertainty region is still somewhat large due to a short observation arc. A car-sized asteroid just made the closest-known approach to Earth without actually colliding with … Potentially hazardous asteroids are about 150 meters (almost 500 feet) or larger, roughly twice as big as the Statue of Liberty is tall. This sub-section visualizes the warning times of the close approaches listed in the above table, depending on the size of the asteroid. At its closest, the asteroid was just over 12,000 miles away from Earth… Radar animation of asteroid 1998 OR 2, which came within 16 lunar distances in April … comparable to the atomic bombs used in the Second World War. About a month ago, an asteroid that was estimated to be at least a quarter-mile wide zoomed past Earth at a speed of 77,000 miles per hour. The table shows about 14 events in the 12 decades of 1900–2020 involving a body with an upper size estimate of 100 m (330 ft) or more making a close approach to Earth within one LD, with one (the Tunguska object) making impact. "2011 MD Goldstone Radar Observations Planning", "2012 DA14 Goldstone Radar Observations Planning", "NEO Earth Close-Approaches (Between 1900 A.D. and 2200 A.D., NEOs with H <=22, nominal distance within 5 LD)", "(214869) 2007 PA8 Goldstone Radar Observations Planning", "Two Asteroids Will Buzz Past Earth on December 11", NEO Earth Close-Approaches Between 1900 A.D. and 2200 A.D. limited to encounters with reasonably low uncertainty, "Earth-grazing fireball on March 29, 2006", "Precise Multi-Instrument Data on 45 Fireballs Recorded over Central Europe in the Period 2006-2008", "NEO Earth Close-Approaches" (Between 1900 A.D. and 2200 A.D., NEOs with H <=22, nominal distance within 5 LD), TECA Table of asteroids next close approaches to the Earth, Upcoming Close Approaches (< 0.10 AU) of NEOs to the Inner Planets, NASA Astronomy Picture of the Day: Earthgrazer: The Great Daylight Fireball of 1972 (2 March 2009), Horizon: Asteroids–The Good, the Bad and the Ugly, https://en.wikipedia.org/w/index.php?title=List_of_asteroid_close_approaches_to_Earth&oldid=1010142757, Short description is different from Wikidata, Creative Commons Attribution-ShareAlike License, First captured from 2 distant locations, which enabled computing its orbit by geometrical methods, Its pre-encounter orbit belonged to the rare, This page was last edited on 4 March 2021, at 00:38. This particular asteroid, which orbits the sun once every 810 days, will fly past Earth at a speed of about 124,000kph (77,000mph). Diameter Diameter value when known or a range (min - max) estimated using the asteroid's absolute magnitude (H) and limiting albedos of 0.25 and 0.05. au 2020 SL1 is the largest potentially hazardous object discovered in 2020. [1][2], The average distance to the Moon (or lunar distance (LD)) is about 384,400 km (238,900 mi), which is around 30 times the diameter of the Earth. (Image credit: NASA/JPL-Caltech) The flyby wasn't expected and took many by surprise. The 3,000-foot-wide asteroid, the largest expected to come this close to Earth in 2021, will pass safely at an estimated 1.25 million miles away. Apollo asteroid, Venus-crosser asteroid, Mars-crosser asteroid: Near-Earth asteroids in Main Asteroid Belt: 2201 Oljato: 2.172: Apollo asteroid, Venus-crosser asteroid, Mars-crosser asteroid: 4486 Mithra: 2.204: Apollo asteroid, Mars-crosser asteroid: 2001 WN 15: 2.275: Apollo asteroid, Mercury-crosser asteroid, Venus-crosser asteroid, Mars-crosser asteroid. The asteroid recently shot past Earth and is expected to come fairly close in 2029. More than one asteroid per year may be listed if its geocentric distance[note 2] is within a tenth of the lunar distance, or 0.10 LD. Designated 2020 QG, it is the closest known asteroid to fly by Earth without impacting the planet. But at its closest, at about 9 a.m. EDT (1300 GMT), the asteroid was about 16,300 miles (26,200 kilometers) away from Earth — less than one-tenth the distance between the Earth … 1 min read Astronomers were excited to observe a "potentially hazardous asteroid" as it came the closest to Earth it has ever … The asteroid was discovered in 2001 when astronomers at the Lincoln Near-Earth Asteroid Research observatory in New Mexico estimated it to be 3,000 feet wide. — European Asteroid Research Node, Timeline of approaches within one lunar distance, Distance from the center of Earth to the center of the object.
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