Discovery [1] | |
---|---|
Discovered by | Johann Palisa |
Discovery date | 20 March 1890 |
Designations | |
(290) Bruna | |
Pronunciation | /ˈbruːnə/ |
Named after | Brno |
A890 FA | |
main belt | |
Orbital characteristics [2] | |
Epoch 31 July 2016 ( JD 2457600.5) | |
Uncertainty parameter 0 | |
Observation arc | 100.87 yr (36843 d) |
Aphelion | 2.93884 AU (439.644 Gm) |
Perihelion | 1.73612 AU (259.720 Gm) |
2.33748 AU (349.682 Gm) | |
Eccentricity | 0.25727 |
3.57 yr (1305.3 d) | |
171.767 ° | |
0° 16m 32.851s / day | |
Inclination | 22.3321° |
10.4972° | |
105.068° | |
Physical characteristics | |
Dimensions | 9.822 km |
13.807 h (0.5753 d) [2] [3] | |
0.314 | |
11.9 | |
290 Bruna is a main belt asteroid that was discovered on 20 March 1890 by Johann Palisa, [1] an Austrian astronomer at the Vienna Observatory.
Photometric observations of this asteroid at the Organ Mesa Observatory in Las Cruces, New Mexico, during 2008 gave a light curve with a period of 13.807 ± 0.001 hours and a brightness variation of 0.54 ± 0.04 in magnitude. Changes in the brightness of the minimum with phase angle is attributed to changes in the shadows across surface features. [3]
It was named by Hofrath August Bielsa for Brünn, now Brno, Czech Republic, Bielsa's home town. [4]