S-type asteroid

S-type asteroids are asteroids with a spectral type that is indicative of a siliceous (i.e. stony) mineralogical composition, hence the name.

Individual asteroids are classified by their characteristic spectra, with the majority falling into three main groups: C-type, M-type, and S-type.

They are dominant in the inner part of the asteroid belt within 2.2 AU, common in the central belt within about 3 AU, but become rare farther out.

Individual asteroids within the asteroid belt are categorized by their spectra, with most falling into three basic groups: carbonaceous (C-type), silicate (S-type), and metal-rich (M-type).

The largest is 15 Eunomia (about 330 km wide across its longest dimension), with the next largest members by diameter being 3 Juno, 29 Amphitrite, 532 Herculina and 7 Iris.

It is the largest of the stony (S-type) asteroids, and somewhere between the 8th- and 12th-largest main-belt asteroid overall (uncertainty in diameters causes uncertainty in its ranking).

The largest is 15 Eunomia (about 330 km wide across its longest dimension), with the next largest members by diameter being 3 Juno, 29 Amphitrite, 532 Herculina and 7 Iris.

It is the 11th-largest asteroid, and one of the two largest stony (S-type) asteroids, along with 15 Eunomia.

The largest is 15 Eunomia (about 330 km wide across its longest dimension), with the next largest members by diameter being 3 Juno, 29 Amphitrite, 532 Herculina and 7 Iris.

Amphitrite (minor planet designation: 29 Amphridite) is one of the largest S-type asteroids, approximately 200 km in diameter, and probably third largest after Eunomia and Juno, although Iris and Herculina are similar in size.

Approximately 17% of asteroids are of this type, making it the second most common after the carbonaceous C-type.

Consequently, whereas a number of S-type asteroids can normally be viewed with binoculars at opposition, even the largest C-type asteroids require a small telescope.

The largest is 15 Eunomia (about 330 km wide across its longest dimension), with the next largest members by diameter being 3 Juno, 29 Amphitrite, 532 Herculina and 7 Iris.

It is classified as an S-type asteroid, meaning that it has a stony composition.

These asteroids were described as "featureless" S-types in the Tholen classification.

These asteroids were described as "featureless" S-types in the Tholen classification.

The Eunomia or Eunomian family (FIN: 502) is a large asteroid family of S-type asteroids named after the asteroid 15 Eunomia.

Florian; FIN: 402; also known as Ariadne family'') is a prominent family of stony asteroids located in the inner region of the asteroid belt.

In the Tholen classification, the S-type is a very broad grouping which includes all the types in the SMASS S-group except for the A, Q, and R, which have particularly strong "stony" absorption features around 1 μm.

There are absorption features shortwards and longwards of 0.7 μm, and the spectrum is generally intermediate between the V and S-type.

The Koronis or Koronian family (FIN: 605), also known as the Lacrimosa family, is a very large asteroid family of stony asteroids, located in the outer region of the asteroid belt.

The largest is 15 Eunomia (about 330 km wide across its longest dimension), with the next largest members by diameter being 3 Juno, 29 Amphitrite, 532 Herculina and 7 Iris.

Asteroids in the Eos family resemble the S-type asteroid category.

S-type asteroids are asteroids with a spectral type that is indicative of a siliceous (i.e. stony) mineralogical composition, hence the name. In the Tholen classification, the S-type is a very broad grouping which includes all the types in the SMASS S-group except for the A, Q, and R, which have particularly strong "stony" absorption features around 1 μm.

The three categories were labelled "C" for dark carbonaceous objects, "S" for stony (silicaceous) objects, and "U" for those that did not fit into either C or S. This basic division of asteroid spectra has since been expanded and clarified.

Phocaea asteroids are of stony S-type composition and have orbits with eccentricities greater than 0.1 and inclinations between 18 and 32°.

S-type asteroids are asteroids with a spectral type that is indicative of a siliceous (i.e. stony) mineralogical composition, hence the name.

S-type asteroids are asteroids with a spectral type that is indicative of a siliceous (i.e. stony) mineralogical composition, hence the name.

S-type asteroids, with an astronomical albedo of typically 0.20, are moderately bright and consist mainly of iron- and magnesium-silicates.

S-type asteroids, with an astronomical albedo of typically 0.20, are moderately bright and consist mainly of iron- and magnesium-silicates.

S-type asteroids, with an astronomical albedo of typically 0.20, are moderately bright and consist mainly of iron- and magnesium-silicates.