290 Bruna

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290 Bruna
Discovery A
Discoverer Johann Palisa
Discovery date March 20, 1890
Alternate
designations
B
Category Main belt
Orbital elements C
Epoch 30 January 2005 (JD 2453400.5)
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
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290 Bruna is a small Main belt asteroid.

It was discovered on March 20, 1890 by Johann Palisa, an Austrian astronomer of Vienna.


Minor planets
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