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A list of known near-Earth asteroid close approaches less than 1 lunar distance (384,400 km or 0.00257 AU) from Earth in 2011. [note 1] 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
Trajectory of 2004 FH in the Earth–Moon system Goldstone radar images of asteroid 2007 PA 8 's Earth flyby in 2012. This is a list of examples where an asteroid or meteoroid travels close to the Earth. Some are regarded as potentially hazardous objects if they are estimated to be large enough to cause regional devastation.
Goldstone radar images of asteroid 99942 Apophis on 8–10 March 2021 Goldstone radar images of asteroid 2001 FO 32 during closest approach on 21 March 2021. Below is 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 2021.
The 27 June 2011 close approach to Earth increased the orbital period of 2011 MD from 380 days to 396 days. During close approach the asteroid passed Earth at a relative speed of 6.7 km/s [1] with a geocentric eccentricity of 1.1. 2011 MD was observed by the Spitzer Space Telescope in February 2014 and estimated to be 6 meters (20 ft) in ...
June 10, 2021 Solar Eclipse Times Event Time (UTC) First Penumbral External Contact 2021 June 10 at 08:13:30.6 UTC First Umbral External Contact 2021 June 10 at 09:50:58.1 UTC First Central Line 2021 June 10 at 09:56:08.7 UTC First Umbral Internal Contact 2021 June 10 at 10:01:51.4 UTC Greatest Eclipse 2021 June 10 at 10:43:06.7 UTC
It passed by Earth at a distance of about 0.03 AU (12 LD; 4.5 Gm; 4.5 million km; 2.8 million mi) in 1937, 1978, 1982, and 2021, and will do so again in 2025. [ 1 ] 3361 Orpheus is a potentially hazardous asteroid (PHA) because its minimum orbit intersection distance (MOID) is less than 0.05 AU (19 LD ; 7.5 Gm ; 7.5 million km ; 4.6 million mi ...
Icarus has an Earth minimum orbital intersection distance of 0.0352 AU (5,270,000 km), which translates into 13.7 lunar distances (LD). [4] This near-Earth object and potentially hazardous asteroid makes close approaches to Earth in June at intervals of 9, 19, or 28 years. On 14 June 1968, it came as close as 0.042482 AU (6,355,200 km; 16.533 ...
Being so close to the Sun, at perihelion the asteroid is moving at 106 km/s (240,000 mph). [5] The relativistic perihelion shift of this object is 1.6 times that of Mercury, which is 42.9 arcseconds per century. [8] With an observation arc over 4 years, the orbit quality of 2021 PH 27 is well secured, with an uncertainty parameter of 3. [4]