Asteria is a free birth-chart and astrology engine at heyasteria.com. You cast a natal chart with Swiss Ephemeris, then read who you are, what's loud today, and what this year is asking, in sentences, not jargon.

Where is Asteria online?

Asteria lives at heyasteria.com. That is the natal-chart engine, not the Titan of falling stars.

Asteria is made by Chad Taylor, the astrologer known as Chad the Maverick, based in Los Angeles.

Casting a natal chart is free. Asteria Plus is optional continuity: unlimited library, personal sky, full synastry, and PDFs.

How is Asteria different from other astrology apps?

Unknown birth times are labeled, not faked. The same engine that casts your chart also computes the public famous-chart library.

Asteria · the astrology engine

The whole sky above.

Cast once. Then read who you are, what's loud today, and what this year is asking, in sentences that land.

Cast your chart See plans

Free to cast. No card. Sign in when you want the library to follow you.

begin

Cast a chart.

The person

Name

The moment

Date of birth

Year

Month

Day

Type the year, or tap a decade then set month and day. Avoids the long phone date wheel.

Time of birth Know it roughly? Narrow it down with birth-time search →

An accurate time sets your rising sign, houses, and Moon degree. Don't know it? Enter 12:00 noon: the chart still works, but those placements stay approximate until you have a real time.

The place

Birth city

Type the city, then tap Find — latitude, longitude, and timezone fill in automatically.

Latitude (°, + north)

Longitude (°, + east)

Timezone

Chart options

House system

Placidus is the modern Western default. Whole Sign is traditional Hellenistic and Vedic; Equal is the simplest; Koch / Regiomontanus / Porphyry are other quadrant systems.

Zodiac

Tropical is Western, anchored to the equinoxes and seasons. Sidereal is Vedic, anchored to the fixed stars themselves.

Include the asteroids Ceres Pallas Juno Vesta Four asteroids that round out the chart: nurture (Ceres), strategy (Pallas), partnership (Juno), devotion (Vesta).

see it move

A chart you can open.

The rings are the same language as the real wheel. Open a verified chart and tap any body for the read.

Frida Kahlo's natal is in the public roster: painter, Coyoacán, 1907. The wheel, the placements, the sentences. Same engine as yours.

Open Frida's chart

start free

Cast is free. Continuity is Plus.

Keep three charts on this device, the collective sky, and the glossary. Sign in when you want the library to follow you. Plus is the personal sky, full synastry, and PDFs.

Free forever