.png.webp) A three-dimensional model of 290 Bruna based on its light curve | |
| 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 | |
Bruna (minor planet designation: 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]
References
- 1 2 "Numbered Minor Planets 1–5000", Discovery Circumstances, IAU Minor Planet center, retrieved 7 April 2013.
- 1 2 Yeomans, Donald K., "290 Bruna", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 11 May 2016.
- 1 2 Pilcher, Frederick (January 2009), "Period Determinations for 33 Polyhymnia, 38 Leda, 50 Virginia, 189 Phthia, and 290 Bruna", The Minor Planet Bulletin, vol. 36, no. 1, pp. 25–27, Bibcode:2009MPBu...36...25P.
- ↑ Schmadel, Lutz D (2007). Dictionary of Minor Planet Names (5th ed.). Berlin Heidelberg New York: Springer. p. 40. ISBN 3-540-00238-3.
External links
- 290 Bruna at AstDyS-2, Asteroids—Dynamic Site
- 290 Bruna at the JPL Small-Body Database
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