290 Bruna

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.

290 Bruna
A three-dimensional model of 290 Bruna based on its light curve
Discovery[1]
Discovered byJohann Palisa
Discovery date20 March 1890
Designations
(290) Bruna
Pronunciation/ˈbrnə/
Named after
Brno
main belt
Orbital characteristics[2]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc100.87 yr (36843 d)
Aphelion2.93884 AU (439.644 Gm)
Perihelion1.73612 AU (259.720 Gm)
2.33748 AU (349.682 Gm)
Eccentricity0.25727
3.57 yr (1305.3 d)
171.767°
0° 16m 32.851s / day
Inclination22.3321°
10.4972°
105.068°
Physical characteristics
Dimensions9.822 km
13.807 h (0.5753 d)[2][3]
0.314
11.9

    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. "Numbered Minor Planets 1–5000", Discovery Circumstances, IAU Minor Planet center, retrieved 7 April 2013.
    2. Yeomans, Donald K., "290 Bruna", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 11 May 2016.
    3. Pilcher, Frederick (January 2009), "Period Determinations for 33 Polyhymnia, 38 Leda, 50 Virginia, 189 Phthia, and 290 Bruna", The Minor Planet Bulletin, 36 (1), pp. 25–27, Bibcode:2009MPBu...36...25P.


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