Chart shapes
Locomotive Chart Shape: Example and Meaning
A worked natal chart example for locomotive chart shape astrology.
This locomotive chart shape astrology is drawn on the wheel below. A locomotive chart shape spreads the planets through about two-thirds of the wheel, with a leading planet at the open edge. All ten planets sit within 182° (≤ 240°) with a 178° empty arc (≥ 120°). Mars leads at the forward edge of the empty arc.
Example chart · Denver, USA · 11 September 1941 at 12:15 UTC
In this chart
| Planet | Sign | Degree | House |
|---|---|---|---|
| Venus | Libra | 25.7° | 2 |
| Mars | Aries | 23.6° | 8 |
How to spot it
- Spread the ten bodies through about two-thirds of the zodiac.
- Identify the leading planet at the clockwise edge of the occupied arc — related to Venus and Mars in this example.
- The empty slice should be about 120°, not a half-wheel bowl.
- Note house emphasis along the occupied train of planets.
What it means
A locomotive shape is traditionally read as sequential drive through a wide occupied arc, with a leading planet at the open edge setting pace. Roughly two-thirds occupancy with a ~120° empty slice is the usual sketch. Houses are Placidus. Leading planet claims should stay modest — the rest of the chart still speaks.
Variations
Common misreadings
- A bowl (~180° empty) and a locomotive (~120° empty) are different cuts. Measure before naming.
- The lead planet is a shape label, not a substitute for the rising sign.
See if your chart has this
Cast a free tropical natal chart with Placidus houses and compare it to the figure above.
The chart above is a synthetic example, not a real person.
FAQ
- What is a locomotive in a natal chart?
- A locomotive shape is traditionally read as sequential drive through a wide occupied arc, with a leading planet at the open edge setting pace. Roughly two-thirds occupancy with a ~120° empty slice is the usual sketch.
- How do I see a locomotive in my own birth chart?
- Cast a tropical natal chart with Placidus houses, turn on the aspects the pattern needs (including minors for yods and Thor's hammer), and compare against the checks on this page. In the example chart the highlighted points include Venus and Mars.
- Is the Locomotive Chart Shape example a real person's chart?
- No. Example chart W-010 is a synthetic example built so the configuration is visible. In the example chart the highlighted points include Venus and Mars. Use the free natal chart tool to check your own placements.