... Figure 5: The location of CPDтИТ20 1123 on the log g T eff diagram, compared with normal sdB stars (Edelmann et al. 2003), helium-rich sdB stars (Ahmad Jeffery 2003; Naslim et al. 2010), helium-rich sdO stars (Stroeer et al. ... We present a fine analysis of the bright intermediate helium sdB star CPDтИТ20 1123 (Albus 1) which shows it to be cool, for a hot subdwarf, with T eff 23 000 K and with a surface helium abundance 17 per cent by number. ...