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Portrait of Jaroslav Heyrovský

Jaroslav Heyrovský

Jaroslav Heyrovský (born December 20, 1890, Prague, Czech Republic; died 1967), was a Czech chemist. Heyrovský's honours include Nobel Prize in Chemistry, Order of the Republic and Foreign Member of the Royal Society.

Jaroslav Heyrovský’s zodiac sign was Sagittarius, Chinese zodiac was Metal Tiger, with Life Path 5 in numerology.

Your match with Jaroslav

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Jaroslav Heyrovský’s AsterNym identity

The Evergreen Explorer

Wood represents growth. Wood-led charts are associated with patience, adaptability and the drive to keep developing. Life Path 5 represents freedom: change, movement, variety and resistance to restrictive routines.

Wood Day Master (BaZi) × mutable Sun × Life Path 5, on the physical plane.

What Jaroslav’s name adds up to

Worked from the name as published, letter by letter.

3

Expression · expression and voice

1

Soul Urge · independence

2

Personality · warm, careful

The name opens on J (1) and closes on V (4). The value it repeats most is 1, which numerology reads as drive.

Pythagorean letter values · A=1 to I=9, then J=1 again

Jaroslav’s lucky numbers, colours and stones

Traditional correspondences, calculated not chosen.

Lucky numbers

5 · 1 · 3 · 4

Lucky colours

White & Gold

Lucky day

Thursday

Direction

← West

Season

autumn

Stones

Turquoise, Yellow Sapphire, Rutilated Quartz

Flower constellation

🤍 Narcissus · 🌸 Peony · 🤍 White Magnolia

Frost white · Rose-gold · Moonlight white

The record

What sets Jaroslav apart

Kylian Mbappé (1998) and Jonah Hill (1983) share the birthday in another year, so the sun sits where it sits here.

What the chart says

Jaroslav, according to the stars

Core essence

Jaroslav is the friend who says "let's just go" and means today. The core of Jaroslav is faith that the world is bigger and better than the room they are in, and a restlessness to go and check. They are honest to the point of it being a sport, funny by accident, and impossible to keep small. Freedom is not a preference, it is oxygen.

The vibe

Underneath, Jaroslav runs hot. The Moon in Aries means feelings arrive fast and loud and burn out just as fast, so the flare you saw an hour ago is already forgiven. What Jaroslav needs to feel safe is honesty in real time and room to react. Say it straight, and they will always meet you there.

How Jaroslav wants to be loved

Jaroslav wants to be loved by someone who is also their favourite travel companion. Venus in Sagittarius needs laughter, honesty and a long leash, and gives the same. Possessiveness kills it; adventure feeds it. Go somewhere new with Jaroslav and watch them fall for you again.

How Jaroslav creates

How Jaroslav makes things happen: they find the gap and grow through it. A Yin Wood day master is the vine, flexible, quietly relentless, better at working around a wall than at knocking it down. Jaroslav creates by adapting, by connecting people, by making the awkward thing fit. Underestimate them and you will look up one day to find them everywhere.

Instinct

Instinct: Jaroslav is bold, a Tiger year, and their gut reaction is to leap. Brave, generous, a bit dramatic, magnetic to be around, and never boring for a second. The Metal year sharpens it: principled, determined, clear about what is right.

Purpose

Purpose: Life Path 5 is the free spirit. Jaroslav is here to explore, to change, to taste everything and report back. Adventure, variety and freedom are not distractions from their purpose, they are it. The lesson is choosing, sometimes, and staying.

Triggers

Triggers: cruelty, and being cornered. Mars in Pisces does not fight straight; Jaroslav slips away, absorbs it, or turns it into something creative instead. Anger becomes art or empathy. The lesson is learning that they are allowed to take up space and say the hard thing.

Computed from Jaroslav's birth date. Working below.

Where Jaroslav sits

Six lines

Jaroslav’s dot comes from the chart; yours is where you put it.

Intimate circleWide network
Jaroslav

You may draw energy from a wide network, many doors, lightly held.

DeliberateSpontaneous
Jaroslav

You may leap first and adjust as you go. Waiting can feel like losing momentum.

PrivateExpressive
Jaroslav

You may wear your feelings openly. What you feel tends to show.

Cool off firstResolve immediately
Jaroslav

You may want to resolve tension the moment it appears, rather than let it sit.

PracticalVisionary
Jaroslav

You likely balance practical steps with room to imagine further.

Gradual trustImmediate chemistry
Jaroslav

You may feel connection fast. Chemistry can arrive before the details do.

Tap each line where you sit.

All twelve of yours, from your birth date →

✦ A real star from their birth night

Dedicate a star to Jaroslav Heyrovský

Three stars chosen from the real sky above Prague on the night they were born. Choose the story that connects you.

Jaroslav’s birth-night reference starMirfakyellow-white · PerseusMirfak, in Perseus. A yellow-white star, 86.8° above the horizon at 9 p.m. local time, the bright star nearest the zenith.Dedicate Mirfak →The warmest lightCapellagolden yellow · AurigaCapella, in Auriga. A golden yellow star, 67.8° above the horizon at 9 p.m. local time, the warmest-toned bright star up that night.Dedicate Capella →

A 9 p.m. reference sky, not the birth minute. Dedications are commemorative and confer no ownership of stars.

The sky over Prague that night

Computed for 50.09°N, 9 p.m. local sky.

Mirfak stood nearest the zenith over Prague at 9 p.m. that evening, 86.8° above the horizon in Perseus.

Sirius was the brightest thing up that night, one of 104 catalog stars above the horizon.

At 50.1°N there are stars that never set at all. Capella and Deneb stay up year round.

Nothing below −39.9° declination clears the horizon at this latitude, so Canopus, Rigil Kentaurus, Achernar, Hadar, Acrux, Mimosa and Toliman were never visible from Prague on any night.

Sun 46° below the horizon, Moon up and 71% lit at waxing gibbous.

How unusual Jaroslav's chart is

Chart pattern score

38 / 100 · Quietly distinctive

T-square onto Mars · Venus retrograde · 1 planet at a critical degree

An AsterNym index built from stelliums, yods, grand crosses and chart shape. It is not a population percentile, and a high score is not a better chart. Without a birth time the houses are left out of it.

Score your own chart →

Sagittarius Sun

Restless in a good way.

Jaroslav Heyrovský's Sun was in Sagittarius for the whole of December 20, 1890, so no birth time is needed to settle it.

What Sagittarius means →

Metal Tiger

Courage before caution.

Jaroslav Heyrovský was born on December 20, 1890, which falls in a Metal Tiger year of the Chinese calendar.

What the Tiger means →

Life Path 5

Five doors open at once.

Jaroslav Heyrovský's birth date, December 20, 1890, reduces to Life Path 5 under the numerology method AsterNym uses.

What Life Path 5 means →

What stands out in Jaroslav’s chart

Jaroslav’s birth chart

Reference chart · birth time unknown

Positions are checked across the whole date. The Moon ranges from 12° to 25° Aries depending on the hour.

AriesTaurusGeminiCancerLeoVirgoLibraScorpioSagittariusCapricornAquariusPisces123456789101112Venus faces off with Neptune · Opposition, 0° orbMercury flows with Saturn · Trine, 1° orbNeptune fuses with Pluto · Conjunction, 1.7° orbVenus faces off with Pluto · Opposition, 1.8° orbSun opens doors for Uranus · Sextile, 1.9° orbMars flows with Uranus · Trine, 2.1° orbVenus grinds against Mars · Square, 2.2° orbMars grinds against Neptune · Square, 2.2° orbSun in Sagittarius · 28°34′☉28°Moon in Aries · 19°07′☽19°Mercury in Capricorn · 16°10′☿16°Venus in Sagittarius · 4°45′ · retrograde♀℞4°Mars in Pisces · 2°33′♂2°Jupiter in Aquarius · 12°03′♃12°Saturn in Virgo · 17°08′♄17°Uranus in Scorpio · 0°27′♅0°Neptune in Gemini · 4°47′ · retrograde♆℞4°Pluto in Gemini · 6°30′ · retrograde♇℞6°

No birth time, so the houses are a solar chart: the Sun’s sign counts as house 1.

Tap a planet, a sign, a house, an aspect line or an element to see what it means and what sits in it.
Lines drawn
Conjunction 0°
Sextile 60°
Square 90°
Trine 120°
Opposition 180°

Placements

Tap one to light it on the wheel.

The working: aspects, Chiron and the asteroids, dominant planets and configurationsshow

Aspects across every possible birth time

  • stableVenusoppositionNeptune0.0° to 0.1° orb

    Jaroslav’s affections pull against their imagination from across the wheel. A see-saw looking for balance, often played out through other people.

  • stableMercurytrineSaturn0.3° to 1.7° orb

    Jaroslav’s mind flows straight into their discipline.

  • stableSunsextileUranus1.4° to 2.4° orb

    Jaroslav’s core identity opens doors for their need for freedom.

  • stableVenussquareMars1.7° to 2.7° orb

  • stableVenusoppositionPluto1.7° to 1.8° orb

  • stableNeptuneconjunctionPluto1.7° orb

  • stableMarstrineUranus1.8° to 2.5° orb

  • stableMarssquareNeptune1.8° to 2.6° orb

  • stableMarssquarePluto3.6° to 4.3° orb

  • stableSunsextileMars3.9° to 4.1° orb

  • stableJupitertrinePluto5.4° to 5.7° orb

  • possibleMoonsquareMercuryorb from 0.1° to 9.0° depending on birth time

Chart signature

Elements

  • Fire3 of 10
  • Earth2 of 10
  • Air3 of 10
  • Water2 of 10

Modalities

  • Cardinal2 of 10
  • Fixed2 of 10
  • Mutable6 of 10

Counted across the ten planets by sign.

Jaroslav’s Chiron, Ceres, Eros, Hygiea and Lilith

What astrologers make of these five, at noon values.

  • ⚷ Chiron ℞Leo 3°29′ (moves 0.05° over the day)

    centaur (2060) · the wound and what is learnt from it

  • ⚳ CeresCapricorn 7°29′ (moves 0.40° over the day)

    dwarf planet (1) · how a person nurtures and wants to be nurtured

  • ♡ ErosSagittarius 7°39′ (moves 0.69° over the day)

    near-Earth asteroid (433) · what draws them and how they desire

  • ⚕ HygieaPisces 29°40′ (moves 0.15° over the day)

    main-belt asteroid (10) · health, routine and what keeps them well

  • ⚸ Black Moon LilithLeo 26°55′ (moves 0.11° over the day)

    mean lunar apogee · the part that refuses to be tamed

Aspects to the asteroids and Lilith

  • Eros opposition Pluto 1.1°
  • Hygiea square Sun 1.1°
  • Chiron trine Venus 1.3°
  • Chiron sextile Neptune 1.3°
  • Black Moon Lilith trine Sun 1.7°
  • Eros conjunction Venus 2.9°
  • Eros opposition Neptune 2.9°

Jaroslav’s dominant planets

  1. 1. ♃ Jupiter6 pts

    rules the Sun sign, Sagittarius; disposes Sun, Venus; 1 major aspect

  2. 2. ♂ Mars5 pts

    5 major aspects

  3. 3. ♇ Pluto5 pts

    disposes Uranus; 4 major aspects

Configurations in Jaroslav’s chart

  • t square, the shape it makesT-square onto Mars · Venus, Neptune, MarsAn opposition with a third planet squaring both ends. Read as a driving tension that resolves through the apex planet.
  • t square, the shape it makesT-square onto Mars · Venus, Pluto, MarsAn opposition with a third planet squaring both ends. Read as a driving tension that resolves through the apex planet.

Minor aspects

semi-sextile, semi-square, quintile, sesquiquadrate, biquintile, quincunx.

  • Uranus biquintile Pluto 0.1°
  • Jupiter biquintile Saturn 0.9°
  • Mercury semi-square Mars 1.4°
  • Sun semi-square Jupiter 1.5°
  • Saturn semi-square Uranus 1.7°

More people like Jaroslav

Other scientists

Born in Czech Republic

More charts like Jaroslav’s

Fellow Sagittarius suns

All about Sagittarius →

Born in Tiger years

Year of the Tiger →

Also born on December 20

Fellow Yin Wood day masters

What a Day Master is →

Other Sagittarius Tiger charts

Other Evergreen Explorers

The Evergreen Explorer explained →

Famous people with Life Path 5

Life Path numbers explained →

From the journal: Your Sun, Moon and rising signs: the Big Three explained · What does Elon Musk say about astrology?

Jaroslav’s cards

Computed from December 20, 1890. Tap to flip.

Birth tarot card

Temperance

AsterNym identity card

The Evergreen Explorer

Western zodiac

Sagittarius

Chinese zodiac

Tiger 寅

Life Path

5 · Explorer

♃ Ruled by Jupiter

Tin Sn

The working: BaZi pillarsshow

BaZi pillars

Day Master: yin Wood.

Year

庚

yang Metal

寅

Tiger

Wood

roots & early life

Month

戊

yang Earth

子

Rat

Water

work & drive

Day

day master

乙

yin Wood

亥

Pig

Water

you & partnership

Where this comes from, and how it is worked out

Jaroslav’s birth date and birthplace come from Wikidata Q157701 (CC0), as do the occupations, works and awards above. With no documented birth time this chart is rated X on the Rodden scale, the astrological convention for how well evidenced a birth time is. The banner above lists what that leaves out. Entries are matched to Wikidata by entity id rather than by name, kept at day precision, and dropped where sources disagree on the date.

Tropical zodiac, whole-sign houses, modern rulers. Aspects on the western_v1 orb policy; minor ones at 1.5° to 2.5°, skipped where a major already holds. Minor bodies from JPL Horizons heliocentric vectors, Lilith as mean apogee. Dominance is an AsterNym score — rulerships, dispositors, aspect count — so other methods can name a different leader.

Portrait by archiv ÚFCH J.Heyrovského AV ČR, v.v.i., CC BY-SA 3.0, via Wikimedia Commons.

The same Jaroslav Heyrovský at Wikipedia.

Roster last reviewed September 10, 2026. The full method: how it works.

Traditional interpretations, not facts or predictions, and not endorsed by Jaroslav Heyrovský.

Quick answers about Jaroslav Heyrovský’s chart

What zodiac sign was Jaroslav Heyrovský?
Jaroslav Heyrovský was a Sagittarius: born December 20, 1890, which puts the Sun in Sagittarius for the whole of that day.
What was Jaroslav Heyrovský's Chinese zodiac animal?
The Tiger, with the Metal element, from the Chinese lunar year of the December 20, 1890 birth.
What was Jaroslav Heyrovský's Life Path number?
Life Path 5, calculated in numerology.
What was Jaroslav Heyrovský's Chiron sign?
Chiron in Leo at 3°. Position from JPL Horizons.
Where was Jaroslav Heyrovský's Black Moon Lilith?
Mean Black Moon Lilith in Leo at 26°. This is the mean lunar apogee; the osculating Lilith some tables use can sit up to 30° away.
What was Jaroslav Heyrovský's dominant planet?
Jupiter, on AsterNym's dominance score (6 points: rules the Sun sign, Sagittarius; disposes Sun, Venus; 1 major aspect). Mars is second and Pluto third. Other sites weight rulerships and aspects differently and can name a different leader.

More charts to explore