What this workbench calculates
The ten planets use apparent geocentric tropical longitudes. Eight supported house methods divide the same chart in different ways. The optional true or mean lunar nodes, mean lunar apogee, Vertex and Anti-Vertex, Fortune and Spirit, and selected fixed-star directions are labeled separately in the result so a mathematical point is not mistaken for a planet.
The fixed-star menu uses a bounded 20-star catalogue and projects each selected J2000 direction to the true ecliptic of the chart date. This option covers 1900–2100. It reports ecliptic longitude for chart comparison; a longitude contact does not mean two objects are visually close in the sky.
Aspect and declination controls
Planet-pair aspects use the selected major orb and scale. Minor angles begin with a 2° cap. Any pair involving an angle, node, lot, lunar apogee, Vertex point, or fixed star uses half that tolerance. “Planets to selected objects” keeps a planet as one member of every pair. “Every selected object pair” also tests point-to-point contacts and expands the grid.
The declination tables calculate Sun through Pluto on the true equator of date. A parallel compares two bodies on the same side of the celestial equator; a contra-parallel compares equal distances on opposite sides. This is a separate coordinate test from a conjunction or opposition in ecliptic longitude.
Accuracy and current limits
The chart covers 1800–2100, except the fixed-star option, which begins in 1900. Historical civil time is entered explicitly and is not looked up here. Near polar latitudes, the engine may substitute Porphyry when a quadrant system is unavailable and names the actual method in the result.
Chiron, true or osculating Black Moon Lilith, Ceres, Pallas, Juno, Vesta, and other asteroids are unavailable in this workbench because the bundled local engine does not provide a suitable verified ephemeris for them. The “Lilith” option is the mean lunar apogee, not asteroid 1181 Lilith or a hypothetical body.