 Orbital diagram | |
| Discovery | |
|---|---|
| Discovered by | Auguste Charlois |
| Discovery date | 20 May 1890 |
| Designations | |
| MPC designation | (293) Brasilia |
| Pronunciation | /brəˈzɪliə/ |
| Named after | Brazil |
| Alternative designations | A890 KA, 1909 HB |
| Minor planet category | main-belt · (outer) Brasilia |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 106.96 yr (39067 d) |
| Aphelion | 3.1657 AU (473.58 Gm) |
| Perihelion | 2.55398 AU (382.070 Gm) |
| Semi-major axis | 2.85982 AU (427.823 Gm) |
| Eccentricity | 0.10694 |
| Orbital period (sidereal) | 4.84 yr (1766.5 d) |
| Average orbital speed | 17.61 km/s |
| Mean anomaly | 107.972° |
| Mean motion | 0° 12 13.68 / day |
| Inclination | 15.583° |
| Longitude of ascending node | 61.316° |
| Argument of perihelion | 86.852° |
| Earth MOID | 1.62263 AU (242.742 Gm) |
| Jupiter MOID | 2.02111 AU (302.354 Gm) |
| TJupiter | 3.239 |
| Physical characteristics | |
| Dimensions | 55.11±1.6 km |
| Synodic rotation period | 8.17 h (0.340 d) |
| Geometric albedo | 0.0615±0.004 |
| Absolute magnitude (H) | 9.94 |
293 Brasilia is a large Main belt asteroid that was discovered by French astronomer Auguste Charlois on 20 May 1890 in Nice. It is the namesake of the Brasilia family, a smaller asteroid family of X-type asteroids in the outer main-belt. However, Brasilia is a suspected interloper in its own family.
Photometric observations of this asteroid at the Leura Observatory in Leura, Australia during 2006 gave a light curve with a period of 8.173 ± 0.002 hours and a brightness variation of 0.20 ± 0.03 in magnitude.
References
- ^ Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV. pp. 297–321. arXiv:1502.01628. Bibcode:2015aste.book..297N. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN 9780816532131.
- Yeomans, Donald K., "293 Brasilia", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 11 May 2016.
- Oey, Julian (December 2006), "Lightcurves analysis of 10 asteroids from Leura Observatory", The Minor Planet Bulletin, 33 (4): 96–99, Bibcode:2006MPBu...33...96O.
External links
- 293 Brasilia at AstDyS-2, Asteroids—Dynamic Site
- 293 Brasilia at the JPL Small-Body Database
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