290 Bruna

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290 Bruna
290Bruna (Lightcurve Inversion).png
A three-dimensional model of 290 Bruna based on its light curve.
Discovery[1]
Discovered by Johann Palisa
Discovery date 20 March 1890
Designations
Named after
Brno
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)
19.48 km/s
171.767°
0° 16m 32.851s / day
Inclination 22.3321°
10.4972°
105.068°
Earth MOID 0.872883 AU (130.5814 Gm)
Jupiter MOID 2.39805 AU (358.743 Gm)
Jupiter Tisserand parameter 3.424
Physical characteristics
Dimensions 11 - 24 km
13.807 h (0.5753 d)[2][3]
11.9

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[edit]

  1. ^ a b "Numbered Minor Planets 1–5000", Discovery Circumstances, IAU Minor Planet center, retrieved 2013-04-07. 
  2. ^ a b Yeomans, Donald K., "290 Bruna", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 11 May 2016. 
  3. ^ a b 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. 

External links[edit]