290 Bruna
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| Discovery A | |
|---|---|
| Discoverer | Johann Palisa |
| Discovery date | March 20, 1890 |
| Alternate designations B |
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| Category | Main belt |
| Orbital elements C | |
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| Eccentricity (e) | 0.259 |
| Semi-major axis (a) | 349.631 Gm (2.337 AU) |
| Perihelion (q) | 259.103 Gm (1.732 AU) |
| Aphelion (Q) | 440.159 Gm (2.942 AU) |
| Orbital period (P) | 1305.02 d (3.57 a) |
| Mean orbital speed | 19.48 km/s |
| Inclination (i) | 22.308° |
| Longitude of the ascending node (Ω) |
10.64° |
| Argument of perihelion (ω) |
104.792° |
| Mean anomaly (M) | 93.824° |
| Physical characteristics D | |
| Dimensions | 11 - 24 km |
| Mass | unknown |
| Density | unknown |
| Surface gravity | unknown |
| Escape velocity | unknown |
| Rotation period | unknown |
| Spectral class | unknown |
| Absolute magnitude | 11.5 |
| Albedo (geometric) | unknown |
| Mean surface temperature |
unknown |
290 Bruna is a small Main belt asteroid.
It was discovered on March 20, 1890 by Johann Palisa, an Austrian astronomer of Vienna.
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