|Discovered by||Johann Palisa|
|Discovery date||February 29, 1880|
|A903 SE, 1947 BP,
1948 JE, 1949 QG2,
1949 SX1, 1950 XH,
|Epoch 30 January 2005 (JD 2453400.5)|
Average orbital speed
It is classified as a rare E-type asteroid and is fairly faint for an object of its type. The overall diameter is estimated to be 23 km and it has a geometric albedo of 0.52. Photometric observations show a rotation period of 6.835 ± 0.001 hours with a brightness variation of 0.20 in magnitude. Using a tri-axial ellipsoidal model derived from light curve data, the overall shape of the asteroid is estimated to be a/b = 1.24 ± 0.12 and b/c = 1.83 ± 0.10, where a/b/c are the three axes of an ellipsoid.
- Mishchenko, Michael I.; Rosenbush, Vera K. (2011), "Opposition Optical Phenomenon in Planetary Astrophysics: Observational Results", Polarimetric Detection, Characterization and Remote Sensing (Springer Science & Business Media), p. 417, ISBN 9400716354.
- Shevchenko, V. G.; et al. (August 2003), "Rotation and photometric properties of E-type asteroids", Planetary and Space Science 51 (9–10): 525–532, Bibcode:2003P&SS...51..525S, doi:10.1016/S0032-0633(03)00076-X.
- The Asteroid Orbital Elements Database
- Minor Planet Discovery Circumstances
- Asteroid Lightcurve Data File
- 214 Aschera at the JPL Small-Body Database
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