3548 Eurybates
Eurybates and its satellite Queta (circled) imaged by the Hubble Space Telescope in 2019–2020 | |
| Discovery | |
|---|---|
| Discovered by | C. J. van Houten I. van Houten-G. Tom Gehrels |
| Discovery site | Palomar Obs. |
| Discovery date | 19 September 1973 |
| Designations | |
| (3548) Eurybates | |
| Pronunciation | /jʊˈrɪbətiːz/ |
Named after | Eurybates (Greek mythology) |
| 1973 SO · 1954 CB 1957 JX · 1978 EE5 1985 TZ | |
| Jupiter trojan Greek Eurybates binary | |
| Adjectives | Eurybatian |
| Orbital characteristics | |
| Epoch 25 February 2023 (JD 2460000.5) | |
| Uncertainty parameter 0 | |
| Earliest precovery date | 9 February 1954 |
| Aphelion | 5.680 AU |
| Perihelion | 4.733 AU |
| 5.206 AU | |
| Eccentricity | 0.0909 |
| 11.88 yr (4,339 d) | |
| 27.507° | |
| 0° 4m 58.682s / day | |
| Inclination | 8.054° |
| 43.542° | |
| 27.481° | |
| Jupiter MOID | 0.1092 AU |
| TJupiter | 2.972 |
| Physical characteristics | |
| Dimensions | 77.5 × 71.3 × 61.8 km |
| 69.3±1.4 km (area equivalent) | |
| Mass | (1.51±0.03)×1017 kg |
Mean density | 1.1±0.3 g/cm3 |
| 8.7027283±0.0000029 h | |
| 150° (wrt ecliptic) 158° (wrt orbit) | |
Pole ecliptic latitude | −60° |
Pole ecliptic longitude | 320° |
| 0.044±0.003 | |
| C B–V = 0.739±0.026 V–R = 0.384±0.021 V–I = 0.355±0.015 | |
| 16.2 to 18.1 | |
| 9.800±0.007 | |
3548 Eurybates (/jʊˈrɪbətiːz/ yə-RIB-ə-teez) is a carbonaceous Jupiter trojan from the Greek camp and the parent body of the Eurybates family, approximately 68 kilometers (42 miles) in diameter. It is a target to be visited by the Lucy mission in August 2027. Discovered during the second Palomar–Leiden Trojan survey in 1973, it was later named after Eurybates from Greek mythology. This C-type asteroid is among the 60 largest known Jupiter trojans and has a rotation period of 8.7 hours. Eurybates has one kilometer-sized satellite, named Queta, that was discovered in images taken by the Hubble Space Telescope in September 2018.