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Asteroid Spectral Type list
List started by
patrick
for the Astronomy domain
There is no user-contributed description yet.
| x name | x image | x Also Typed With | x Asteroids Of This Type | x article |
|---|---|---|---|---|
| V-type asteroid | 4 Vesta |
The spectra of the V-type asteroids or Vestoids are similar to that of 4 Vesta, by far the largest asteroid in this class (hence the name).
A large proportion have orbital elements similar to those of 4 Vesta, either close enough to be part of the...
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| X-type asteroid |
The X-group of asteroid collects together several types with similar spectra, but probably quite different compositions.
In the Tholen classification the X-group contains the types:
Since in this scheme the albedo is crucial in discriminating...
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| A-type asteroid |
A-type asteroids are relatively uncommon inner-belt asteroid that have a strong, broad 1 µm olivine feature and a very reddish spectrum shortwards of 0.7 µm. They are thought to come from the completely differentiated mantle of an asteroid.
A-type...
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| C-type asteroid |
C-type asteroids are carbonaceous asteroid. They are the most common variety forming around 75% of known asteroid, and an even higher percentage in the outer part of the belt beyond 2.7 AU, which is dominated by this asteroid type. The proportion of...
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| E-type asteroid | Spectral Type | 2867 Šteins |
E-type asteroids are asteroid thought to have enstatite achondrite surfaces. They form a large proportion of asteroids inward of the main belt known as Hungaria asteroid, but rapidly become very rare as the main belt proper is entered. There are,...
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| F-type asteroid |
F-type asteroids are a relatively uncommon type of carbon asteroid, falling into the wider C-group.
Generally similar to the B-type asteroids, but lacking the "water" absorption feature around 3 μm indicative of hydrated minerals, and differing in...
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| G-type asteroid |
G-type asteroids are a relatively uncommon type of carbon asteroid. The most notable asteroid in this class is 1 Ceres.
Generally similar to the C-type objects, but containing a strong ultraviolet absorption feature below 0.5 μm. An absorption...
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| J-type asteroid |
J-type asteroids are asteroid with spectra similar to that of Diogenite meteorites and so, presumably, to the deeper layers of the crust of 4 Vesta.
Their spectra are rather similar to that of the V-type asteroid but have a particularly strong 1...
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| K-type asteroid |
K-type asteroids are relatively uncommon asteroid with a moderately reddish spectrum shortwards of 0.75 μm, and a slight bluish trend longwards of this. They have a low albedo. Their spectrum resembles that of CV and CO meteorite.
These asteroids...
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| L-type asteroid |
L-type asteroids are relatively uncommon asteroid with a strongly reddish spectrum shortwards of 0.75 μm, and a featureless flat spectrum longwards of this. In comparison with the K-type, they exhibit a more reddish spectrum at visible wavelengths...
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| M-type asteroid |
M-type asteroids are asteroid of unknown composition; they are moderately bright (albedo 0.1–0.2). Some, but not all, are made of nickel-iron, either pure or mixed with small amounts of stone. These are thought to be pieces of the metallic core of...
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| O-type asteroid |
The rare O-type asteroids have spectra similar to the unusual asteroid 3628 Boznemcová, which is the best asteroid match to the spectra of L6 and LL6 ordinary chondrite meteorites. Their spectra have a deep absorption feature longward of 0.75 μm.
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| P-type asteroid |
P-type asteroids have low albedo and a featureless reddish electromagnetic spectrum. It has been suggested that they have a composition of organic rich silicate, carbon and anhydrous silicates, possibly with water ice in their interior. P-type...
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| Q-type asteroid |
Q-type asteroids are relatively uncommon inner-belt asteroid with a strong, broad 1 micrometre olivine and pyroxene feature, and a spectral slope that indiciates the presence of metal. There are absorption features shortwards and longwards of 0.7 µm...
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| R-type asteroid |
R-type asteroids are moderately bright, relatively uncommon inner-belt asteroid that are spectrally intermediate between the V and A-type asteroid. The spectrum shows distinct olivine and pyroxene features at 1 and 2 micrometre, with a possibility...
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| S-type asteroid | 433 Eros |
S-type asteroids are of a silicaceous (stony) composition, hence the name. Approximately 17% of asteroid are of this type, making it the second most common after the C-type.
S-types are moderately bright (with an albedo of 0.10 to 0.22) and...
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| T-type asteroid |
T-type asteroids are rare inner-belt asteroid of unknown composition with dark, featureless and moderately red spectra, and a moderate absorption feature shortwards of 0.85 µm. No direct meteorite analog has been found to date. Thought to be...
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| D-type asteroid |
D-type asteroids have a very low albedo and a featureless reddish electromagnetic spectrum. It has been suggested that they have a composition of organic rich silicate, carbon and anhydrous silicates, possibly with water ice in their interiors. D...
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| B-type asteroid |
B-type asteroids are a relatively uncommon type of carbon asteroid, falling into the wider C-group. In the asteroid population, B-class objects are abundant in the outer main belt, and also dominate the high-inclination Pallas family which includes...
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