Type of asteroid spectral group
D-type asteroids have a very low albedo and a featureless reddish spectrum.[1] It has been suggested that they have a composition of organic-rich silicates, carbon and anhydrous silicates, possibly with water ice in their interiors.[2] D-type asteroids are found in the outer asteroid belt and beyond; examples are 152 Atala, 944 Hidalgo and most Jupiter trojans. It has been suggested that the Tagish Lake meteorite was a fragment from a D-type asteroid, and that the Martian moon Phobos is closely related.[3]
The Nice model suggests that D-type asteroids may have originated in the Kuiper belt.[4] 46 D-type asteroids are known, including: 3552 Don Quixote, 944 Hidalgo, 624 Hektor, and 10199 Chariklo.[5]
Examples
A list of some of the largest D-type asteroids.[5]
See also
References
- ^ Fitzsimmons, A.; et al. (February 1994). "A spectroscopic survey of D-type asteroids". Astronomy and Astrophysics. 282 (2): 634–642. Bibcode:1994A&A...282..634F.
- ^ Jones, Thomas D.; Lebofsky, Larry A.; Lewis, John S.; Marley, Mark S. (1990-11-01). "The composition and origin of the C, P, and D asteroids: Water as a tracer of thermal evolution in the outer belt". Icarus. 88 (1): 172–192. doi:10.1016/0019-1035(90)90184-B. ISSN 0019-1035.
- ^ [1] Space.com via Yahoo News, Jan 19, 2014, "Potato-Shaped Mars Moon Phobos May Be a Captured Asteroid"
- ^ McKinnon, William B. (September 2008). "On The Possibility Of Large KBOs Being Injected Into The Outer Asteroid Belt". American Astronomical Society. 40: 464. Bibcode:2008DPS....40.3803M. Retrieved 15 December 2015.
- ^ a b "JPL Small-Body Database Search Engine: [spec. type = D (Tholen) or spec. type = D (SMASSII)]". JPL Solar System Dynamics. Retrieved 10 August 2016.
