584 Semiramis

584 Semiramis
A three-dimensional model of 584 Semiramis based on its light curve
Discovery
Discovered byA. Kopff
Discovery siteHeidelberg
Discovery date15 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 arc110.26 yr (40272 d)
Aphelion2.9282 AU (438.05 Gm)
Perihelion1.8224 AU (272.63 Gm)
2.3753 AU (355.34 Gm)
Eccentricity0.23276
3.66 yr (1337.1 d)
166.35°
0° 16m 9.228s / day
Inclination10.718°
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]

  1. ^ Noah Webster (1884) A Practical Dictionary of the English Language
  2. ^ a b "584 Semiramis (1906 SY)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Archived from the original on 18 September 2020. Retrieved 7 May 2016.
  3. ^ a b Cite error: The named reference Carry2012 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference mpb42_1_4 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference apj615_2_L161 was invoked but never defined (see the help page).