Kepleris is one of the first astrology charts. From the astronomical point of view topocentric planetary positions are in full harmony with house cusp positions.

The centre of the topocentric system is placed on a certain geographic point on the earth, where a person was born or an event happened. All bodies are placed on the chart as they are seen in the real local sky at the certain moment.

The aspects between planets on the topocentric chart are quite visible. In the local sky one planet looks at the other planet through certain local aspect - conjunction, opposition, trine, square, etc. Using different house systems for topocentric chart is absolutely pointless because it has it's own native topocentric house system.

So, the entire chart is drawn, by using altitudes and azimuths as if they are measured directly by such instruments as quadrant and compass. To calculate the chart positions few simple expressions are used but, of course, the most precision and complex astronomical calculations have been done to acquire the exact altitudes and azimuths.

Here are some key features of "Johannes Kepleris":

· Julian Date
· Julian Ephemeris Date
· Local Sidereal Time
· Heliocentric Positions of the Objectss
· Geocentric Positions of the Objects
· Distances from the Earth and the Sun
· Topocentric Reduced Positions of the Object
· Elongation and Phase
· Angular Size and Magnitude
· Rising and Setting Times and Places