Discovery | |
---|---|
Discovered by | A. Kopff |
Discovery site | Heidelberg |
Discovery date | 15 January 1906 |
Designations | |
(584) Semiramis | |
Pronunciation | /sɪˈmɪrəmɪs/[1] |
Named after | Semiramis |
1906 SY | |
Orbital characteristics[2] | |
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) |
2.3753 AU (355.34 Gm) | |
Eccentricity | 0.23276 |
3.66 yr (1337.1 d) | |
166.35° | |
0° 16m 9.228s / day | |
Inclination | 10.718° |
282.159° | |
85.121° | |
Physical characteristics | |
27.005±0.7 km[2] 25.89 ± 1.075 km[3] | |
Mass | (8.23 ± 5.77) × 1017 kg[3] |
5.068 h (0.2112 d) | |
0.1987±0.011 | |
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.[4] The spectrum shows it to be a stony S(IV)-type asteroid.[5]
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