293 Brasilia

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.^[1]: 23

293 Brasilia

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[1]
Orbital characteristics[2]
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° 12m 13.68s / 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

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.^[3]