_Aschera.png) 3D convex shape model of 214 Aschera | |
| Discovery | |
|---|---|
| Discovered by | Johann Palisa |
| Discovery date | 29 February 1880 |
| Designations | |
| MPC designation | (214) Aschera |
| Pronunciation | /əˈʃɪərə/ |
| Alternative designations | A880 DB, 1903 SE 1947 BP, 1948 JE 1949 QG2, 1949 SX1 1950 XH, 1953 OO |
| Minor planet category | Main belt |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 136.09 yr (49707 d) |
| Aphelion | 2.6938 AU (402.99 Gm) |
| Perihelion | 2.5279 AU (378.17 Gm) |
| Semi-major axis | 2.6108 AU (390.57 Gm) |
| Eccentricity | 0.031762 |
| Orbital period (sidereal) | 4.22 yr (1,540.9 d) |
| Average orbital speed | 18.43 km/s |
| Mean anomaly | 167.065° |
| Mean motion | 0° 14 1.068 / day |
| Inclination | 3.4364° |
| Longitude of ascending node | 341.997° |
| Argument of perihelion | 131.579° |
| Physical characteristics | |
| Dimensions | 23.16±1.0 km |
| Synodic rotation period | 6.835 h (0.2848 d) |
| Geometric albedo | 0.5220±0.048 |
| Spectral type | E |
| Absolute magnitude (H) | 9.2 |
214 Aschera is a Main belt asteroid. It was discovered by Austrian astronomer Johann Palisa on February 29, 1880, in Pola and was named after the Sidonian goddess Asherah. This minor planet is orbiting the Sun at a distance of 2.61 AU with a low eccentricity of 0.032 and an orbital period of 4.22 yr. The orbital plane is inclined at an angle of 3.44° to the plane of the ecliptic.
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 data collected during September 2021 was used the generate a lightcurve for 214 Aschera. This showed a rotation period of 6.833±0.004 h with a brightness variation of 0.20 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.
References
- "Asherah". Merriam-Webster.com Dictionary. Merriam-Webster.
- ^ "214 Aschera". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016.
- 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 978-9400716353.
- Farfan, Rafael Gonzalez; et al. (April 2022), "The Rotation Periods of 3 Juno, 28 Bellona, 129 Antigone, 214 Aschera, 237 Coelestina, 246 Asporina, 382 Dodona, 523 Ada, 670 Ottegebe, 918 Itha, 1242 Zambesia, 1352 Wawel, 1358 Gaika, 4155 Watanabe, and 6097 Koishikawa", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers, 49 (2): 136–140, Bibcode:2022MPBu...49..136F.
- 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.
External links
- The Asteroid Orbital Elements Database
- Minor Planet Discovery Circumstances
- Asteroid Lightcurve Data File
- 214 Aschera at AstDyS-2, Asteroids—Dynamic Site
- 214 Aschera at the JPL Small-Body Database
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