Discovery
Discovery date18 May 1895
Designations
MPC designation(403) Cyane
Pronunciation/ˈsaɪəniː/
Alternative designations1895 BX
Minor planet categoryMain belt AdjectivesCyanean /saɪˈeɪniːən/, /saɪəˈniːən/
Orbital characteristics
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc120.89 yr (44155 d)
Aphelion3.08158 AU (460.998 Gm) Perihelion2.53799 AU (379.678 Gm)
Semi-major axis2.80979 AU (420.339 Gm)
Eccentricity0.096731
Orbital period (sidereal)4.71 yr (1720.3 d) Mean motion0° 12m 33.35s / day
Inclination9.14883°
Longitude of ascending node244.411°
Argument of perihelion255.602°
Physical characteristics
Synodic rotation period12.283 h (0.5118 d) Geometric albedo0.1653±0.007
Absolute magnitude (H)9.0