Brian Warner is a leading observer of asteroids. Visit his pages at: http://www.minorplanetobserver.com/
A useful guide to observing asteroids can be found at – http://www.minorplanet.info/observingguides.html
To learn more about or purchase the MPO Canopus software needed for astrometric and photometric observation of asteroids – http://www.minorplanetobserver.com/MPOSoftware/MPOSoftware.htm
Further details about time and time references in Southern Africa can be found at: http://www.time.org.za/
Guide to Minor Body Astrometry http://www.minorplanetcenter.net/iau/info/Astrometry.html#equip
Guide to Minor Planet Photometry http://www.minorplanet.info/ObsGuides/Misc/photometryguide.htm
To generate an ephemeris for your asteroid selected for observation go to the MPC ephemeris page: http://www.minorplanetcenter.net/iau/MPEph/MPEph.html. Enter the asteroid designation into the box. Scroll down and select “MPC8-line”. Click button: “Get ephemerides/HTML page”