Discovered by H. E. Wood Alternative names 1912 NW Aphelion 3.9279 AU (587.61 Gm) Discovered 16 January 1912 Discovery site Union Observatory | Discovery date 16 January 1912 Observation arc 92.04 yr (33619 d) Perihelion 2.8955 AU (433.16 Gm) Inclination 20.526° Asteroid group Cybele asteroid | |
Similar 76 Freia, 375 Ursula, 423 Diotima, 372 Palma, 360 Carlova | ||
790 Pretoria is a minor planet orbiting the Sun that was discovered by English astronomer Harry Edwin Wood on January 16, 1912. It is a member of the Cybele group located beyond the core of the main belt (see Minor planet groups).
10µ radiometric data collected from Kitt Peak in 1975 gave a diameter estimate of 175 km. In the present day it is estimated to be 170 km (106 mi) in diameter. Photometric measurements of the asteroid made in 2005 at the Palmer Divide Observatory showed a light curve with a period of 10.370 ± 0.002 hours and a brightness variation of 0.08 ± 0.03 in magnitude.
References
790 Pretoria Wikipedia(Text) CC BY-SA