Search results
Results from the WOW.Com Content Network
Comet Mission Outcome Remarks Carrier rocket [2] ICE (ISEE-3) 12 August 1978: NASA United States / ESA: 21P/Giacobini–Zinner: Flyby Successful Extended mission; Closest approach of 7,862 kilometres (4,885 mi) at 11:02 UTC on 11 September 1985. Also made distant observations of 1P/Halley in May 1986. [3] Delta 2914: Vega 1 (5VK No.901) 15 ...
Due to its binary nature, the asteroid was then named Didymos, the Greek word for 'twin'. Didymos's moon, Dimorphos, was the target of the DART mission to test the viability of asteroid impact avoidance by collision with a spacecraft, while the impact was witnessed by LICIACube, a flyby CubeSat component of the mission.
1566 Icarus (/ ˈ ɪ k ər ə s / IK-ə-rəs; provisional designation: 1949 MA) is a large near-Earth object of the Apollo group and the lowest numbered potentially hazardous asteroid. [20] It has an extremely eccentric orbit (0.83) and measures approximately 1.4 km (0.87 mi) in diameter. In 1968, it became the first asteroid ever observed by ...
3361 Orpheus had been one of the originally proposed targets for the Near Earth Asteroid Rendezvous (NEAR) mission. The proposed AIDA mission's spacecraft, Double Asteroid Redirection Test was a fly-by observation of 3361 Orpheus during its trajectory to asteroid 65803 Didymos but later cancelled.
There are two main varieties of short-period comets: Jupiter-family comets (those with semi-major axes of less than 5 AU) and Halley-family comets. Halley-family comets, named for their prototype, Halley's Comet , are unusual in that although they are short-period comets, it is hypothesized that their ultimate origin lies in the Oort cloud, not ...
Astronomers observe astronomical objects, such as stars, planets, moons, comets and galaxies – in either observational (by analyzing the data) or theoretical astronomy. Examples of topics or fields astronomers study include planetary science, solar astronomy, the origin or evolution of stars, or the formation of galaxies.
243 Ida is an asteroid in the Koronis family of the asteroid belt.It was discovered on 29 September 1884 by Austrian astronomer Johann Palisa at Vienna Observatory and named after a nymph from Greek mythology.
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Ishtar measures 1.298 kilometers in diameter and its surface has an albedo of 0.26. [8] [7] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.20 and derives a diameter of 1.16 kilometers based on an absolute magnitude of 17. ...