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On February 16, 2019, React 16.8 was released to the public, introducing React Hooks. [18] Hooks are functions that let developers "hook into" React state and lifecycle features from function components. [19]
1862 Apollo / ə ˈ p ɒ l oʊ / is a stony asteroid, approximately 1.5 kilometers in diameter, classified as a near-Earth object (NEO). It was discovered by German astronomer Karl Reinmuth at Heidelberg Observatory on 24 April 1932, but lost and not recovered until 1973.
99942 Apophis (provisional designation 2004 MN 4) is a near-Earth asteroid and a potentially hazardous object, 450 metres (1,480 ft) by 170 metres (560 ft) in size, [3] that caused a brief period of concern in December 2004 when initial observations indicated a probability of 2.7% that it would hit Earth on Friday, April 13, 2029.
The total mass of the 1991 VH system is (1.58 ± 0.08) × 10 12 kg, based on the orbital motion of the satellite.The mass ratio of the satellite to the primary is 0.086 ± 0.018, corresponding to a primary mass of 1.4 × 10 12 kg —approximately 12 times as massive as the satellite.
(29075) 1950 DA (provisional designation 1950 DA) is a risk-listed asteroid, classified as a near-Earth object and potentially hazardous asteroid of the Apollo group, approximately 1.3 kilometers (0.81 miles) in diameter. [4] It once had the highest known probability of impacting Earth. [11]
2020 BX 12 is a sub-kilometer binary asteroid, classified as a near-Earth asteroid and potentially hazardous object of the Apollo group.It was discovered on 27 January 2020 by the Asteroid Terrestrial-impact Last Alert System survey at the Mauna Loa Observatory during its approach to Earth of 0.02915 AU (4.361 million km; 11.34 LD).
Designed to be integrated into a niche in the instrument display panel, the IMP instrument's volume was about that of a big toaster [Width: 24.8 cm(9 + 3 ⁄ 4 in), H:22.2 cm (8 + 3 ⁄ 4 in), D:14.6 cm(5 + 3 ⁄ 4 in)]. It was the prominent feature of the IDS panel.
2017 YE 5 is a binary pair of asteroids of approximately equal size and mass, each about 0.9 km (0.56 mi) in diameter. Classified as a near-Earth asteroid and potentially hazardous object of the Apollo group, 2017 YE 5 was discovered by amateur astronomer Claudine Rinner at the Oukaïmeden Observatory on 21 December 2017.