In Sirius you can put the AntiVertex, Equatorial Descendant, North Point and South Point, and the Zenith and Nadir points projected on the ecliptic plane in a chart wheel. The Zenith and Nadir points are simply the points square to the Ascendant and are also the Zenith and Nadir points projected on the ecliptic plane and they are also the highest and lowest points on the ecliptic plane. The North and South Points are square to the Vertex. These additional points have been put into chart wheels by some of the western siderealist astrologers but may also be useful to astrologers using other methods.