(3548) Eurybates
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Asteroid (3548) Eurybates |
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| Properties of the orbit ( animation ) | |
| Orbit type | Jupiter Trojan (L 4 ) |
| Major semi-axis | 5.1896 AU |
| eccentricity | 0.0889 |
| Perihelion - aphelion | 4.7280 AU - 5.6512 AU |
| Inclination of the orbit plane | 8.0616 ° |
| Length of the ascending node | 43.5600 ° |
| Argument of the periapsis | 28.0909 ° |
| Sidereal period | 11.82 a |
| Mean orbital velocity | 13.11 km / s |
| Physical Properties | |
| Medium diameter | 72.14 km |
| Albedo | 0.0538 |
| Rotation period | 8.711 h |
| Absolute brightness | 9.7 likes |
| history | |
| Explorer | C. J. and I. v. Houten-Groeneveld , T. Gehrels |
| Date of discovery | 19th September 1973 |
| Another name | 1973 SO , 1954 CB, 1957 JX, 1978 EE 5 , 1985 TZ |
| 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. | |
(3548) Eurybates is an asteroid belonging to the group of Jupiter Trojans . This describes asteroids that move around the sun at the Lagrange points on Jupiter's orbit . (3548) Eurybates was discovered on September 19, 1973 by the Dutch research team Cornelis Johannes van Houten , Ingrid van Houten-Groeneveld and Tom Gehrels . It is assigned to the leading Lagrangian point L 4 .
The asteroid is named after the mythical Greek herald Eurybates , the friend and companion of Odysseus . In August 2027, the Lucy spacecraft is expected to fly past Eurybates.
On January 10, 2020, the Minor Planet Center announced the discovery of a moon with MPEC 2020-A113. It was observed for the first time with the Hubble Space Telescope on September 12, 2018, again on September 14, 2018 and a third time on January 3, 2020. The apparent magnitude was 26.95 mag, which is assuming the same albedo as that of Eurybates would correspond to a mean diameter of 0.6–1 km. Its mean orbit half axis is at least approx. 2000 km. Further observations are necessary to calculate the orbital elements. It has been given the provisional provisional designation S / 2018 (3548) 1. The satellite is particularly interesting because Eurybates is the largest member of the only known and confirmed family of Trojans that can be traced back to a collision. Lucy is to receive a correspondingly expanded program in order to explore it more closely.
See also
Individual evidence
Web links
- Asteroid Eurybates: Discovery Circumstances according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics, Cambridge, USA
- (3548) Eurybates in the Small-Body Database of the Jet Propulsion Laboratory (English).
- (3548) Eurybates in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).