D-type asteroid

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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]

Contents

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]

Name of AsteroidClassificationDiameter
(km)		Diameter
method		Minor planet
category
SMASS Tholen
267 Tirza DDU52.68 ±3.1 IRAS Main-belt asteroid
279 Thule X D126.59 ±3.7IRASOuter main-belt asteroid
336 Lacadiera XkD69.31 ±2.4IRASMain-belt asteroid
368 Haidea –D69.61 ±2.2IRASMain-belt asteroid
624 Hektor –D250 ±25Direct imaging Jupiter trojan
721 Tabora –D76.07 ±2.5IRASOuter main-belt asteroid
773 Irmintraud TD95.88 ±1.8IRASMain-belt asteroid
884 Priamus –D110 ±10AbsmagJupiter trojan
911 Agamemnon –D166.66 ±3.9IRASJupiter trojan
944 Hidalgo –D38 ±5Absmag Centaur
1143 Odysseus –D125.64 ±3.7IRASJupiter trojan
1144 Oda –D57.59 ±2.2IRASOuter main-belt asteroid
1172 Äneas –D142.82 ±4.8IRASJupiter trojan
1167 Dubiago –D63.12 ±5.6IRASOuter main-belt asteroid
1256 Normannia –D69.22 ±2.8IRASOuter main-belt asteroid
1269 Rollandia –D105.19 ±2.8IRASOuter main-belt asteroid
1578 Kirkwood –D51.88 ±1.8IRASOuter main-belt asteroid
1583 Antilochus –D101.62 ±3.2IRASJupiter trojan
1746 Brouwer –D64.25 ±4.9IRASOuter main-belt asteroid
1867 Deiphobus –D122.67 ±3.9IRASJupiter trojan
2207 Antenor –D85.11 ±3.7IRASJupiter trojan
2241 Alcathous –D114.63 ±5.8IRASJupiter trojan
2311 El Leoncito –D53.14 ±3.0IRASOuter main-belt asteroid
2312 Duboshin –D54.94 ±3.2IRASOuter main-belt asteroid
2357 Phereclos –D94.90 ±4.3IRASJupiter trojan
2363 Cebriones –D81.84 ±5.1IRASJupiter trojan
2674 Pandarus –D98.10 ±3.2IRASJupiter trojan
2893 Peiroos –D87.46 ±6.9IRASJupiter trojan
10199 Chariklo D–302 ±30n.a.Centaur

See also

References

  1. ↑ 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.
  2. ↑ 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. Bibcode:1990Icar...88..172J. doi:10.1016/0019-1035(90)90184-B. ISSN   0019-1035.
  3. ↑ Space.com via Yahoo News, Jan 19, 2014, "Potato-Shaped Mars Moon Phobos May Be a Captured Asteroid"
  4. ↑ 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.
  5. 1 2 "JPL Small-Body Database Search Engine: [spec. type = D (Tholen) or spec. type = D (SMASSII)]". JPL Solar System Dynamics . Retrieved 10 August 2016.


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