Antique Zodiac Chart – Planetary Aspects

Historical Background

Coloured triangles and crossing lines make this antique zodiac chart one of the most immediately graphic plates in Cellarius’s atlas. Its title describes planetary aspects, including conjunctions and oppositions. Rather than plotting the planets’ physical paths through space, the main diagram illustrates relationships between positions in the zodiac. A small terrestrial map occupies the centre, while two lower diagrams introduce parallax and planetary conjunctions. Johannes van Loon engraved the plate for Harmonia Macrocosmica.

Map Details

• Original title: Typus Aspectuum, Oppositionum et Coniunctionum etz in Planetis
• Chartmaker: Andreas Cellarius
• Engraver: Johannes van Loon
• Source atlas: Harmonia Macrocosmica
• First published: Amsterdam, 1660, by Johannes Janssonius
• Edition reproduced: Exact issue unconfirmed
• Subject: Historical planetary aspects, conjunctions and oppositions within the zodiac
• Original format: Engraved atlas plate with colour

Geometry across the zodiac

The twelve zodiac signs occupy coloured compartments around the outside. Their familiar figures include the twins near the top, the ram at the right, the scales at the left and Sagittarius at the bottom. Fine divisions follow the inside edge of the ring. Coloured lines join positions across it, creating a layered pattern of triangles, rectangles and intersecting diagonals.

Different colours help separate one geometric relationship from another. Green lines form a broad triangular pattern, while red, yellow and blue lines cross through the same circular space. The lettering on the lines identifies the aspects they describe. This is why the central pattern should not be treated as a network of planetary orbits: its purpose is to compare angular relationships between positions viewed within the zodiac.

Conjunction and opposition

Conjunction refers to bodies appearing in the same general direction as seen by an observer, while opposition places them in opposite directions. Other aspects concern different angular separations. The chart gives those relationships a visible shape. Its horizontal line passes through the central Earth image and reaches opposite zodiac positions, making the relationship between viewpoint and surrounding sky particularly clear.

This plate genuinely belongs to the historical overlap between astronomical positioning and astrological interpretation. That makes “zodiac chart” an accurate description, but it does not turn the sheet into a personalised horoscope. It illustrates a general scheme of relationships. The scientific validity of astrological predictions should not be inferred from the precision of the engraving or from the authority of the atlas in which it appeared.

The small world at the centre

The terrestrial image is shown from a polar viewpoint, with geographical lines radiating across the northern lands. Europe, Asia and North America occupy the circular map rather than appearing as an ordinary rectangular world projection. Its placement gives the entire diagram a point of reference: the aspect lines are arranged around Earth, where their apparent relationships are observed.

The map’s engraved place names and outlined coasts bring a different kind of detail into the centre of the geometric scheme. It is both a visual anchor and a reminder that celestial positions are being described from a terrestrial perspective. The surrounding lines pass behind or around the mapped disc, keeping the zodiac’s geometry distinct from the geographical information within it.

Two subjects in the lower corners

At lower left, a semicircular diagram appears beneath a banner marked Parallaxes Planetarum. At lower right, another sits beneath Conjunctiones Planetarum. Both contain arcs and fine lines that differ from the large aspect pattern above. Parallax concerns a change in apparent position associated with different viewpoints; conjunction concerns apparent alignment. Including them on the same sheet links the zodiac relationships to other problems of observation and position.

Winged figures hold the lower banners, with more small figures moving through clouds at the sides. The upper title is divided between two green cloth panels. These devices make room for a long caption without breaking the circular main diagram. The broad geometric field remains clear, while the surrounding figures provide colour and movement.

An atlas plate with a distinct character

Harmonia Macrocosmica was first published in Amsterdam in 1660 by Johannes Janssonius. Its subjects include different models of the heavens, planetary motions and constellation imagery. This sheet contributes a different kind of explanation: relationships expressed through angles and repeated geometric forms. It is particularly rewarding to view alongside the more pictorial star charts, because the shared zodiac vocabulary is used here for a much more diagrammatic purpose.

The exact edition behind this reproduction is unconfirmed. The modern fine art print preserves the source image’s fold, coloured compartments and closely engraved lettering. Its decorative effect comes directly from the subject: the web of aspect lines produces a bold pattern, while the central map and smaller corner diagrams provide enough detail to reward a slower look.