introduction
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| orbital characteristics | |
|---|---|
| semi-major axis | 522.135 x 106 miles (3490AU) |
| Avila | 563,729 x 106 miles (3,768 Australians) |
| rock bottom | 480,540 x 106 miles (3,212 Australians) |
| strangeness | 0.080 |
| period of revolution | 2381.639 days (6.521 a) |
| average orbital velocity | 15.92 km / s |
| tilt | 10.856 degrees |
| ascending node | 73.330 degrees |
| rock bottom argument | 266.048 degrees |
| average anomaly | 53.356 degrees |
| category | asteroid belt Favorite |
| physical properties | |
| Dimensions | 384 x 264 x 232 km |
| Mass | 1.478 x 1019 kg |
| Volumetric mass | 1200 kg / m3 |
| Tropical Gravity space (surface generally refers to the surface layer of an object. The term a…) | 0.048 m / s2 |
| Speed release | 0.12 km / sec |
| rotation period | 0.2160 d (5.184 hours) |
| Spectral classification | X (Bus & Binzel, 2002) |
| Absolute destiny | 6.94 |
| Albedo | 0.043 |
| Temperature | ~ 151 thousand |
| Discovery | |
| discoverer | Norman Robert Pogson |
| date | May 16, 1866 |
| designation(s) | A909GA |
(87) Silvia It is one of the largest main and first belt asteroids asteroid (The asteroid is a celestial body whose dimensions differ by a few dozen…) He discovered that he owns a system of two asteroid satellites as natural satellites.
It was discovered by Norman Robert Pogson on May 16, 1866.
physical properties
(87) Silvia from a color (Color is the eye’s subjective perception of one or more wave frequencies…) Very dark and may have base texture. The discovery of its satellites allowed very precise measurements of its mass and mass density (The density or relative density of an object is the ratio of its density to …), which is also very weak and indicates that the asteroid is very porous. Ha amount (Volume, in the physical or mathematical sciences, is the quantity that measures extension…) It should consist of about 60% of Empty (Void is usually defined as the absence of matter in a spatial area.).
Ha Speed (distinguish 🙂 The spin on itself is very fast and goes to 5.18 hours (time is a unit of measure 🙂 (Its other physical properties are detailed in coloring (a table can have several meanings depending on the context used 🙂 Reverse).
Satellites
(87) Silvia is the first known asteroid with at least two natural satellites. It may have been created by collision (A collision is a direct impact between two bodies. Such an impact transfers part of…) Other satellites may exist around (Autour is the name you give to naming birds in French (update)…) Out of (87) Silvia, she is currently too young to be discovered.
(87) Silvia I Romulus
Romulus I Satellites (satellite may refer to:)(provisional name: S/2001(87)1), was discovered on February 18, 2001 by Michael E. Brown and Jean Luc Margot Thanks to telescope (Telescope, (from the Greek tele meaning “far” and skopein meaning…) Keck II from the Mauna Kea Observatory in Hawaii
It measures about 18 ± 4 km from Diameter (In a circle or sphere, the diameter is a line segment that passes through the center…)And orbit (In celestial mechanics, an orbit is the path drawn by a body in space…) At a distance of 1,356 ± 5 km from (87) Silvia and making a full revolution in 3.6496 ± 0.0007 days (Day or today is the interval between sunrise and sunset, which is…) (87.59 hours).
(87) Silvia II Remus
Remus II Satellites (satellite may refer to:)(provisional name: S/2004(87)1), discovered on August 9, 2005 by Frank Marchis (from’University of California (University of California is an American university founded in 1868, which…) at Berkeley) and Pascal Descamps, Daniel Histoffer and Jerome Berthier (of the Paris Observatory), thanks to one of the four telescopes from 8.2 meter (The meter (symbol m, from the Greek metron, measure) is the basic unit of length…) the A very large telescope (Very Large Telescope (VLT) is a set of 4 main telescopes and 4 additional telescopes…) (vlt) from European Southern Observatory (The European Southern Observatory (ESO) is…) (ESO)
It has a diameter of about 7 ± 2 km, orbits 706 ± 5 km from the primary and completes a full revolution in 1.3788 ± 0.000733 days (33.09 hours).
