(189004) Capys

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Asteroid
(189004) Capys
Properties of the orbit ( animation )
Epoch:  4th November 2013 ( JD 2,456,600.5)
Orbit type Jupiter Trojan (L 5 )
Major semi-axis 5.1925  AU
eccentricity 0.1460
Perihelion - aphelion 4.4343 AU - 5.9507 AU
Inclination of the orbit plane 17.0963 °
Length of the ascending node 27.6508 °
Argument of the periapsis 334.6217 °
Sidereal period 11.83 a
Physical Properties
Absolute brightness 13.4 mag
history
Explorer Cornelis Johannes van Houten ,
Ingrid van Houten-Groeneveld ,
Tom Gehrels
Date of discovery October 16, 1977
Another name 3184 T-3 , 2001 UY 186
Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items.

(189004) Capys is an asteroid belonging to the group of Jupiter Trojans . This describes asteroids that orbit the sun on the Lagrange points on the orbit of the planet Jupiter . It is assigned to the Lagrange point L 5 , that is, (189004) Capys follows Jupiter in its orbit around the sun by 60 °.

The asteroid was discovered on October 16, 1977 by the Dutch astronomer couple Cornelis Johannes van Houten and Ingrid van Houten-Groeneveld . The discovery took place during the 3rd Trojan survey, during which Tom Gehrels surveyed field plates recorded by the 120 cm Oschin Schmidt telescope of the Palomar observatory at the University of Leiden , 17 years after the start of the Palomar-Leiden- Surveys .

(189004) Capys was named after Kapys , the son of Assarakos , father of the Anchises and grandfather of Aeneas . Kapys was one of the Trojans who believed the wooden horse at the gates of Troy to be a trap. The naming took place on December 12th, 2008. In the case of the asteroids, trailing Trojans are named after Trojan heroes.

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