A three-dimensional model of 584 Semiramis based on its light curve | |
Discovery | |
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Discovered by | A. Kopff |
Discovery site | Heidelberg |
Discovery date | 15 January 1906 |
Designations | |
MPC designation | (584) Semiramis |
Pronunciation | /sɪˈmɪrəmɪs/ |
Named after | Semiramis |
Alternative designations | 1906 SY |
Orbital characteristics | |
Epoch 31 July 2016 (JD 2457600.5) | |
Uncertainty parameter 0 | |
Observation arc | 110.26 yr (40272 d) |
Aphelion | 2.9282 AU (438.05 Gm) |
Perihelion | 1.8224 AU (272.63 Gm) |
Semi-major axis | 2.3753 AU (355.34 Gm) |
Eccentricity | 0.23276 |
Orbital period (sidereal) | 3.66 yr (1337.1 d) |
Mean anomaly | 166.35° |
Mean motion | 0° 16 9.228 / day |
Inclination | 10.718° |
Longitude of ascending node | 282.159° |
Argument of perihelion | 85.121° |
Physical characteristics | |
Mean radius | 27.005±0.7 km 25.89 ± 1.075 km |
Mass | (8.23 ± 5.77) × 10 kg |
Synodic rotation period | 5.068 h (0.2112 d) |
Geometric albedo | 0.1987±0.011 |
Absolute magnitude (H) | 8.71 |
584 Semiramis is a minor planet orbiting the Sun within the main asteroid belt. Photometric observations at the Mark Evans Observatory during 2014 gave a rotation period of 5.0689 ± 0.0001 hours. This value is in close agreement with previous studies. The spectrum shows it to be a stony S(IV)-type asteroid.
References
- Noah Webster (1884) A Practical Dictionary of the English Language
- ^ "584 Semiramis (1906 SY)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Archived from the original on 18 September 2020. Retrieved 7 May 2016.
- ^ Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, vol. 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
- Connour, Kyle; Wright, Tyler; French, Linda M. (April 2011), "Upon Further Review: VI. An Examination of Previous Lightcurve Analysis from the Palmer Divide Observatory", The Minor Planet Bulletin, 42 (1): 4, Bibcode:2015MPBu...42....4C
- Sasaki, Takanori; et al. (November 2004), "Mature and Fresh Surfaces on the Newborn Asteroid Karin", The Astrophysical Journal, 615 (2): L161 – L164, Bibcode:2004ApJ...615L.161S, doi:10.1086/426431
External links
- 584 Semiramis at AstDyS-2, Asteroids—Dynamic Site
- 584 Semiramis at the JPL Small-Body Database
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