Discovery Site: Berlin Urania Observatory

Discovery Date: 13 August 1898

Dimensions: 16.84±0.06 km (mean diameter)

Discovery site: Vienna Observatory

Discovery date: 3 October 1911

Dimensions: 2.36km

Discovery Site: Heidelberg Observatory

Discovery date: 3 January 1918

Dimensions: 2.1km

Discovery site: Bergedorf Observatory

Discovery date: 23 October 1924

Dimensions: 39.3 km x 18.9 km

Discovery site: Uccle Observatory

Discovery date: 12 March 1932

Mean diameter: 0.857 km

Discovery site: Palomar Observatory

Discovery date: 27 June 1949

Mean diameter: 1.61 km × 1.60 km × 1.17 km

Discovery site: Johannesburg Observatory

Discovery date: 22 May 1950

Mean diameter: 3.82 km 3.9 km 4.2 km (CALL-LCDB) 4.57 km 5.37±0.04 km 5.39±0.54 km 5.8 km (Gehrels 1994) 8.55±5.23 km

Discovery site: Palomar Observatory

Discovery date: 14 September 1951

Mean diameter: (5.0×2.0×2.1) ± 0.15 km

Discovery site: Johannesburg Observatory

Discovery date: 25 September 1929

Mean diameter: ≈15×6×6 km 8.370±0.075 km 9.12 km 9.9±2.8 km 10.2 km

Discovery site: Lick Observatory

Discovery date: 17 July 1948

Mean diameter: 3.810±0.049 km 4.1 km