Do Your Stars Match Your Personality?

Live Data · 7,275 respondents

Data Explorer

Select a planet and toggle personality traits to see how they vary by astronomical constellation. The dashed line marks overall prevalence for each trait.

7,275 Participants

43.5% Extroverted

62.7% Agreeable

60.8% Conscientious

44.0% Neurotic

68.9% Open

Planet: Sun Showing: all traits Constellations: 13

Dashed baselines — E: 43.5% · A: 62.7% · C: 60.8% · N: 44.0% · O: 68.9%

Personality Self-Assessment · n = 1,006

How Well Do Birth Placements Classify Traits?

Participants took the Big Five Inventory, a standard personality self-assessment, and gave their birth date, time and place. A classifier trained on their IAU planetary placements and retrograde statuses at birth then sorted each participant as relatively low or high in each trait, scored against that participant's own self-assessment by leave-one-out cross-validation. Accuracy by trait:

Extroversion

64.6%

650 / 1,006

Agreeableness

60.5%

609 / 1,006

Conscientiousness

58.3%

586 / 1,006

Neuroticism

57.1%

574 / 1,006

Openness

68.6%

690 / 1,006

Contribute Your Data

Submit Your Birth Chart

Enter your birth details below. Your planet positions in the IAU constellations will be calculated automatically, then paired with your self-reported personality profile.

Birth Date

Birth Time

Birth City

Timezone Offset (UTC±)

Your Astronomical Birth Chart (IAU Constellations)

Positions calculated using geocentric equatorial coordinates (J2000 epoch) mapped to IAU constellation boundaries via the astronomy-engine library.

Personality Self-Assessment

Check all traits that genuinely describe you, based on how you typically feel and behave:

Extroversion I am outgoing, sociable, and energised by social interaction. I enjoy being the centre of attention.

Agreeableness I am cooperative, empathetic, trusting, and genuinely interested in others' wellbeing.

Conscientiousness I am organised, dependable, self-disciplined, and tend to plan ahead rather than act spontaneously.

Neuroticism I experience emotional ups and downs, anxiety, or moodiness more often than most people.

Openness I am intellectually curious, imaginative, and open to new experiences, ideas, and unconventional ways of thinking.

✦ Thank you — your data has been recorded. ✦

Based on your birth chart

What the Data Suggests for You

For each trait, this shows the percentage of participants with your same planet placements who self-reported that trait — averaged across all ten planets with available data. The tick mark (|) shows the overall sample baseline.

This is descriptive data from the study sample, not a predictive model. Associations are weak across the dataset as a whole — treat these as curiosities, not forecasts.