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60 Echo
Main-belt asteroid
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Main-belt asteroid
| Field | Value |
|---|---|
| minorplanet | yes |
| image | 60Echo (Lightcurve Inversion).png |
| caption | Three-dimensional model of 60 Echo created based on light-curve |
| background | #D6D6D6 |
| name | 60 Echo |
| discoverer | James Ferguson |
| discovered | September 14, 1860 |
| mpc_name | (60) Echo |
| pronounced | |
| adjectives | Echoian |
| named_after | Echo |
| mp_category | Main belt |
| epoch | December 31, 2006 (JD 2454100.5) |
| semimajor | 2.394 AU |
| perihelion | 1.958 AU |
| aphelion | 2.830 AU |
| eccentricity | 0.182 |
| period | 1353.002 days |
| inclination | 3.602° |
| asc_node | 191.803° |
| arg_peri | 270.477° |
| mean_anomaly | 91.065° |
| dimensions | 60.2 km{{cite web |
| id | 2011-08-14 last obs |
| title | JPL Small-Body Database Browser: 60 Echo |
| url | https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=60 |
| publisher | Jet Propulsion Laboratory |
| access-date | 2012-01-27}} |
| mass | (3.15 ± 0.32) × 1017 kg |
| density | 2.78 ± 0.33 g/cm3 |
| rotation | 25.2 hr |
| spectral_type | S |
| abs_magnitude | 8.21 |
| albedo | 0.254 |
|access-date=2012-01-27}}
60 Echo is a quite large main-belt asteroid. It was discovered by James Ferguson of the United States Naval Observatory in Washington D.C., on September 14, 1860. It was his third and final asteroid discovery. It is named after Echo, a nymph in Greek mythology. James Ferguson had initially named it "Titania", not realizing that name was already used for a satellite of Uranus.
This object is orbiting the Sun with a period of 1353.002 days, a semimajor axis of , and an eccentricity of 0.18. Its orbital plane is at an inclination of 3.6° to the plane of the ecliptic. This is a stony S-type asteroid with a cross-sectional size of 60.2 km that is spinning with a rotation period of 25.2 hr. Echo has been studied by radar.{{cite web |access-date=2012-01-23}} It is not known to be a member of any asteroid family.
References
References
- "Asteroid Data Sets".
- (1863). "Appletons' annual cyclopaedia and register of important events of the year: 1862". [[D. Appleton & Company]].
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