290 Bruna
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A three-dimensional model of 290 Bruna based on its light curve. | |
| Discovery[1] | |
|---|---|
| Discovered by | Johann Palisa |
| Discovery date | March 20, 1890 |
| Designations | |
Named after | Brno |
| main belt | |
| Orbital characteristics[2] | |
| Epoch 30 January 2005 (JD 2453400.5) | |
| Aphelion | 440.159 Gm (2.942 AU) |
| Perihelion | 259.103 Gm (1.732 AU) |
| 349.631 Gm (2.337 AU) | |
| Eccentricity | 0.259 |
| 1,305.02 d (3.57 a) | |
Average orbital speed | 19.48 km/s |
| 93.824° | |
| Inclination | 22.308° |
| 10.64° | |
| 104.792° | |
| Physical characteristics | |
| Dimensions | 11 - 24 km |
| 13.807[3] h | |
| 11.5 | |
|
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290 Bruna is a main belt asteroid that was discovered on March 20, 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]
References
- ↑ 1.0 1.1 "Numbered Minor Planets 1–5000", Discovery Circumstances (IAU Minor Planet center), retrieved 2013-04-07.
- ↑ Yeomans, Donald K., "290 Bruna", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), retrieved 2013-04-07.
- ↑ 3.0 3.1 Pilcher, Frederick (January 2009), "Period Determinations for 33 Polyhymnia, 38 Leda, 50 Virginia, 189 Phthia, and 290 Bruna", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers 36 (1): 25–27, Bibcode:2009MPBu...36...25P.
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