House Systems

The system parameter on /v1/houses and /v1/chart accepts the system name or its single-character code.

Supported systems

Name	Code	Notes
`placidus`	`P`	Default. Most popular in Western astrology
`koch`	`K`	Time-based, popular in German-speaking countries
`porphyrius`	`O`	Trisection of quadrants
`regiomontanus`	`R`	Space-based, used in horary
`campanus`	`C`	Prime vertical division
`equal`	`E`	Equal 30° houses from Ascendant
`whole_sign`	`W`	Whole-sign houses (Hellenistic)
`vehlow_equal`	`V`	Ascendant at middle of 1st house
`meridian`	`X`	Axial rotation system
`azimuthal`	`H`	Horizontal system
`polich_page`	`T`	Topocentric system
`alcabitius`	`B`	Semi-arc based, medieval
`morinus`	`M`	Equatorial system
`krusinski`	`U`	Krusinski-Pisa system
`equal_mc`	`D`	Equal houses from MC
`pullen_sd`	`L`	Sinusoidal delta
`pullen_sr`	`S`	Sinusoidal ratio
`sripati`	`Q`	Used in Indian astrology
`gauquelin`	`G`	36 sectors for Gauquelin research
`sunshine`	`i`	Sunshine/Makransky system
`sunshine_treindl`	`I`	Sunshine (Treindl variant)
`carter`	`F`	Carter's Poli-Equatorial

# By name
?system=whole_sign

# By code
?system=W

System names are case-insensitive.