(13509) Guayaquil
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Asteroid (13509) Guayaquil |
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| Properties of the orbit ( animation ) | |
| Orbit type | Inner main belt asteroid |
| Asteroid family | Sulamitis family |
| Major semi-axis | 2.4752 AU |
| eccentricity | 0.0967 |
| Perihelion - aphelion | 2.2359 AU - 2.7145 AU |
| Inclination of the orbit plane | 4.1177 ° |
| Length of the ascending node | 260.0064 ° |
| Argument of the periapsis | 19.5932 ° |
| Time of passage of the perihelion | 2nd May 2017 |
| Sidereal period | 3.89 a |
| Physical Properties | |
| Medium diameter | 10.226 km (± 0.942) |
| Albedo | 0.030 (± 0.021) |
| Absolute brightness | 14.4 mag |
| history | |
| Explorer | Eric Walter Elst |
| Date of discovery | April 4, 1989 |
| Another name | 1989 GU 3 , 1990 TY 4 |
| 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. | |
(13509) Guayaquil is an asteroid of the main middle belt . It was discovered on April 4, 1989 by the Belgian astronomer Eric Walter Elst at the La Silla Observatory of the European Southern Observatory in Chile ( IAU code 809).
The asteroid belongs to the Sulamitis family, a group of asteroids named after the asteroid (752) Sulamitis . The ageless (not osculating ) orbital elements of (13509) Guayaquil are almost identical with those of two smaller asteroids, when one of the absolute brightness starting from 16.6 and 18.0 compared to 14.4: (165535) 2001 DZ , and (385 776 ) 2006 AD 23 .
The mean diameter of (13509) Guayaquil was calculated to be 10.226 km (± 0.942). With an albedo of 0.030 (± 0.021), it has a relatively dark surface for asteroids. The rotation period of (13509) Guayaquil was published in 2015 by Adam Waszczak, Chan-Kao Chang, Eran Ofek et al. examined. However, the light curve was not sufficient for a determination.
The asteroid was named after Guayaquil , the largest city in Ecuador , on August 29, 2015 .
See also
Web links
- (13509) Guayaquil in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (13509) Guayaquil in the Small-Body Database of the Jet Propulsion Laboratory of NASA at the California Institute of Technology (Caltech) in Pasadena , California (English)
- Discovery Circumstances of (13509) Guayaquil according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
Individual evidence
- ↑ The family status of the asteroids in the AstDyS-2 database (English, HTML; 51.4 MB)
- ↑ The asteroid (10792) Ecuador , also discovered by Eric Walter Elst, was named after Ecuador in 2001.