14974 Počátky Discovery [1] Discovered by M. Tichý Discovery site Kleť Obs. Discovery date 22 September 1997 Designations MPC designation (14974) Počátky Named after Počátky (Czech town)[2] Alternative designations 1997 SK1 · 1991 FF2 Minor planet category main-belt · (middle) [3] background Orbital characteristics [1] Epoch 4 September 2017 (JD 2458000.5) Uncertainty parameter 0 Observation arc 26.13 yr (9,543 days) Aphelion 2.8575 AU Perihelion 2.4047 AU Semi-major axis 2.6311 AU Eccentricity 0.0860 Orbital period 4.27 yr (1,559 days) Mean anomaly 100.11° Mean motion 0° 13m 51.24s / day Inclination 3.8704° Longitude of ascending node 338.42° Argument of perihelion 158.25° Physical characteristics Dimensions 7000404000000000000♠4.040±0.831 km[4][5] 4.88 km (calculated)[3] Rotation period 7001217079000000000♠21.7079±0.0320 h[6] 7001217277000000000♠21.7277±0.0320 h[6] Geometric albedo 0.10 (assumed)[3] 6999226000000000000♠0.226±0.100[4][5] Spectral type S [3] Absolute magnitude (H) 14.2[1][4] · 7001142250000000000♠14.225±0.009 (R)[6] · 7001142260000000000♠14.226±0.005 (R)[6] · 7001144300000000000♠14.43±0.19[7] · 14.67[3]