Kai Siegbahn
Kai Siegbahn (born April 20, 1918, Lund, Sweden; died 2007), was a Swedish physicist. Siegbahn served as inspector at Östgöta nation. Siegbahn's honours include Nobel Prize in Physics, Sixten Heyman Award and Björkén Prize.
Kai Siegbahn’s zodiac sign was Aries, Chinese zodiac was Earth Horse, with Life Path 7 in numerology.
Aries, Chinese zodiac was 
Earth Horse, with 
Life Path 7 in numerology.Your match with Kai
Kai Siegbahn’s AsterNym identity
The Radiant Visionary
Fire represents warmth, visibility and momentum. Fire-led charts are associated with enthusiasm, expression and the ability to encourage other people. Life Path 7 represents inquiry: study, solitude and the need to understand what others may simply accept.
Fire Day Master (BaZi) × cardinal Sun × Life Path 7, on the intuitive plane.
How common is the name Kai in the U.S.?
#93
US rank in 2025
~78,710
Americans share it since 1926
2022
its peak year
US records hold Kai from 1926 onward, though not for 1918 — fewer than five that year, which the SSA does not publish. 2022 was its busiest.
US Social Security Administration public records
What Kai’s name adds up to
Worked from the name as published, letter by letter.
5
Expression · versatility
7
Soul Urge · understanding
7
Personality · composed, private
The name opens on K (2) and closes on I (9). The value it repeats most is 1, which numerology reads as drive.
Pythagorean letter values · A=1 to I=9, then J=1 again
Kai’s lucky numbers, colours and stones
Traditional correspondences, calculated not chosen.
Lucky numbers
7 · 2 · 3
Lucky colours
Yellow & Ochre
Lucky day
Tuesday
Direction
• Center
Season
the turning of seasons
Stones
Diamond, Red Coral, Citrine
Flower constellation
🌼 Daisy · 🌺 Red Dahlia · 🌼 Chrysanthemum
White · Crimson · Gold
The record
What sets Kai apart
Jessica Lange (1949) and Miranda Kerr (1983) share the birthday in another year, so the sun sits where it sits here.
What the chart says
Kai, according to the stars
Core essence
Kai leads with the body. First in, first to speak, first to say the thing everyone was thinking, and honestly a little surprised when the room needed a second to catch up. The core of Kai is courage that does not look like courage from the inside, it just looks like Tuesday. They would rather be wrong fast than right slowly, and it is why people follow them.
How Kai wants to be loved
Kai wants to be loved tenderly. Venus in Pisces is the romantic of the zodiac: soft, giving, a little dreamy, and easily bruised. They love without keeping score and need a partner who will not take advantage of that. Be gentle with Kai, be honest, and they will make the ordinary feel enchanted.
How Kai creates
How Kai makes things happen: they hold the flame steady. A Yin Fire day master is the candle, the lamp, the light that is close and personal rather than blazing. Kai creates intimacy, one room, one conversation, one person made to feel seen. Moody when the fuel runs low, magnetic when it does not.
Instinct
Instinct: Kai is free-spirited, a Horse year, and their gut reaction is to run toward the new thing. Energetic, warm, popular, honest to a fault, and impossible to keep indoors. The Earth year grounds it: practical, patient, someone people lean on.
Purpose
Purpose: Life Path 7 is the seeker. Kai is here to understand, to go deep rather than wide, to keep a private inner world that most people never see. Thoughtful, intuitive, happiest with time alone, and learning to let the right people in.
Triggers
Triggers: sloppiness, and being told they are overthinking it. Mars in Virgo means Kai channels energy into fixing, sorting, getting it right, and gets sharp when others do not care. The critic turns inward first. Give them a problem worth solving and watch them come alive.
Computed from Kai's birth date. Working below.
Where Kai sits
Six lines
Kai’s dot comes from the chart; yours is where you put it.
You may draw energy from a wide network, many doors, lightly held.
You may leap first and adjust as you go. Waiting can feel like losing momentum.
You may wear your feelings openly. What you feel tends to show.
You may want to resolve tension the moment it appears, rather than let it sit.
You may be drawn to big possibilities. The practical follows after the vision.
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 Kai Siegbahn
Three stars chosen from the real sky above Lund on the night they were born. Choose the story that connects you.
A 9 p.m. reference sky, not the birth minute. Dedications are commemorative and confer no ownership of stars.
The sky over Lund that night
Computed for 55.71°N, 9 p.m. local sky.
At 9 p.m. the star closest to straight overhead at Lund was Merak, in Ursa Major, 80.0° up.
Sirius was the brightest thing up that night, one of 105 catalog stars above the horizon.
Lund sits at 55.7°N, high enough that Vega, Capella and Deneb never set there — they circle the pole all night, every night of the year.
Nothing below −34.3° declination clears the horizon at this latitude, so Canopus, Rigil Kentaurus, Achernar, Hadar, Acrux, Mimosa and Toliman were never visible from Lund on any night.
The Moon, 74% lit at waxing gibbous, was still up; the Sun sat 5° below the horizon.
How unusual Kai's chart is
Chart pattern score
44 / 100 · Quietly distinctive
T-square onto Jupiter · 1 planet at a critical degree · Mars retrograde
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 →If you only read one paragraph
Aries Sun
Aries SunStarts the thing. Then plans it.
Kai Siegbahn's Sun was in Aries for the whole of April 20, 1918, so no birth time is needed to settle it.
What Aries means →Earth Horse
Earth HorseHappiest halfway there.
Kai Siegbahn was born on April 20, 1918, which falls in a Earth Horse year of the Chinese calendar.
What the Horse means →Life Path 7
Life Path 7Needs the quiet to work.
Kai Siegbahn's birth date, April 20, 1918, reduces to Life Path 7 under the numerology method AsterNym uses.
What Life Path 7 means →What stands out in Kai’s chart
- The tightest major aspect in Kai Siegbahn's date-only chart is Venus opposition Mars, with an orb of under 1°.
- Five of the ten planets fall in Fixed signs, making Fixed the strongest modality in this chart.
- Kai Siegbahn combines a Fire Day Master in BaZi with a cardinal Sun and a Life Path on the intuitive plane, the combination AsterNym calls The Radiant Visionary.
Kai’s birth chart
Reference chart · birth time unknown
Positions are checked across the whole date. The Moon ranges from 18° to 0° Leo or Virgo depending on the hour.
No birth time, so the houses are a solar chart: the Sun’s sign counts as house 1.
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
stableVenusoppositionMars0.2° to 1.3° orb
Kai’s affections pull against their drive from across the wheel.
stableVenussquareJupiter1.6° to 2.3° orb
Kai’s affections grind against their growth.
stableMercurysquareSaturn1.8° to 2.2° orb
Kai’s mind grinds against their discipline.
stableSunsextileUranus2.1° to 3.0° orb
stableMarssquareJupiter2.6° to 2.9° orb
stableMercurysextileVenus2.9° to 4.2° orb
stableSaturnconjunctionNeptune3.4° orb
stableJupitersextileSaturn3.5° to 3.7° orb
stableSunsextilePluto3.7° to 4.6° orb
stableMercurytrineMars4.2° to 4.4° orb
stableSunsquareNeptune4.3° to 5.3° orb
stableMercurysquareNeptune5.2° to 5.6° orb
Chart signature
Elements
- Fire4 of 10
- Earth2 of 10
- Air2 of 10
- Water2 of 10
Modalities
- Cardinal2 of 10
- Fixed5 of 10
- Mutable3 of 10
Counted across the ten planets by sign: Fire leads this chart.
Kai’s Chiron, Ceres, Eros, Hygiea and Lilith
What astrologers make of these five, at noon values.
⚷ ChironAries 1°08′ (moves 0.05° over the day)
centaur (2060) · the wound and what is learnt from it
⚳ CeresCapricorn 9°11′ (moves 0.09° over the day)
dwarf planet (1) · how a person nurtures and wants to be nurtured
♡ ErosAries 18°17′ (moves 0.71° over the day)
near-Earth asteroid (433) · what draws them and how they desire
⚕ HygieaPisces 29°36′ (moves 0.33° over the day)
main-belt asteroid (10) · health, routine and what keeps them well
⚸ Black Moon LilithVirgo 28°57′ (moves 0.11° over the day)
mean lunar apogee · the part that refuses to be tamed
Aspects to the asteroids and Lilith
- Ceres trine Mercury 0.6°
- Chiron square Pluto 2.5°
Kai’s dominant planets
1. ♂ Mars7 pts
rules the Sun sign, Aries; disposes Sun; 3 major aspects
2. ☿ Mercury6 pts
disposes Mars, Jupiter; 4 major aspects
3. ☉ Sun5 pts
disposes Saturn, Neptune; 3 major aspects
Configurations in Kai’s chart
T-square onto Jupiter · Venus, Mars, JupiterAn 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.
- Sun sesquiquadrate Mars 0.5°
- Venus biquintile Saturn 0.5°
- Neptune semi-sextile Pluto 0.7°
- Mercury quintile Uranus 0.8°
- Sun semi-square Venus 1.2°
- Mercury semi-sextile Jupiter 1.6°
Kai’s family here
One relative of Kai Siegbahn also has a chart on AsterNym.
More people like Kai
Other physicists
Born in Sweden
- Ingrid BergmanSwedish actress
- Halvar BjörkSwedish actor
- Ulf von EulerSwedish physiologist and pharmacologist
- Anita EkbergSwedish actress
- Marianne AminoffSwedish actress
- Torsten Nils WieselSwedish neuroscientist
More charts like Kai’s
Fellow Aries suns
- Dario FoItalian actor, playwright, comedian, singer-songwriter, theater director, painter, and political activist
- Adolf ButenandtGerman biochemist
- John VaneEnglish pharmacologist
Born in Horse years
- Derek BartonEnglish organic chemist
- Didier QuelozSwiss astronomer
- Bertram BrockhouseCanadian physicist
Also born on April 20
- Jessica Lange1949
- Miranda Kerr1983
- Carmen Electra1972
- Paul Poiret1879
- Andy Serkis1964
- Tan France1983
Fellow Yin Fire day masters
- Paul ZindelAmerican dramatist and children's writer
- Abe BurrowsAmerican dramatist and playwright
- Art Buchwaldjournalist, humorist, United States Marine
Other Aries Horse charts
- Sadie SinkAmerican actress
- Sam WaltonAmerican businessman
- Skai JacksonAmerican actress
- Dolores HuertaAmerican labor leader
Other Radiant Visionarys
- Jan Paul van HeckeDutch association football player
- Steve KapuadiFrench footballer
- Eren ElmalıTurkish association football player (born 2000)
- Sondre LangåsNorwegian footballer (born 2001)
Famous people with Life Path 7
- Jalen ThompsonAmerican football safety
- Derion KendrickAmerican football cornerback
- Dayo OdeyingboAmerican football player
From the journal: Your Kua number, and why it splits households · Do twins have the same birth chart?
Kai’s cards
Computed from April 20, 1918. Tap to flip.
Birth tarot card
The TowerAsterNym identity card
The Radiant VisionaryWestern zodiac
AriesChinese zodiac
Horse 午Life Path
7 · Seeker♂ Ruled by Mars
Iron Fe
The working: BaZi pillarsshow
BaZi pillars
Day Master: yin Fire.
Year
戊
yang Earth
午
Horse
Fire
roots & early life
Month
丙
yang Fire
辰
Dragon
Earth
work & drive
Day
day master
丁
yin Fire
酉
Rooster
Metal
you & partnership
Where this comes from, and how it is worked out
Kai’s birth date and birthplace come from Wikidata Q192712 (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 Jan Collsiöö, CC BY-SA 3.0 nl, via Wikimedia Commons.
The same Kai Siegbahn at Wikipedia.
Roster last reviewed September 10, 2026. The full method: how it works.
Traditional interpretations, not facts or predictions, and not endorsed by Kai Siegbahn.
Quick answers about Kai Siegbahn’s chart
- What zodiac sign was Kai Siegbahn?
- Kai Siegbahn was an Aries: born April 20, 1918, which puts the Sun in Aries for the whole of that day.
- What was Kai Siegbahn's Chinese zodiac animal?
- The Horse, with the Earth element, from the Chinese lunar year of the April 20, 1918 birth.
- What was Kai Siegbahn's Life Path number?
- Life Path 7, calculated in numerology.
- What was Kai Siegbahn's Chiron sign?
- Chiron in Aries at 1°. Position from JPL Horizons.
- Where was Kai Siegbahn's Black Moon Lilith?
- Mean Black Moon Lilith in Virgo at 28°. This is the mean lunar apogee; the osculating Lilith some tables use can sit up to 30° away.
- What was Kai Siegbahn's dominant planet?
- Mars, on AsterNym's dominance score (7 points: rules the Sun sign, Aries; disposes Sun; 3 major aspects). Mercury is second and Sun third. Other sites weight rulerships and aspects differently and can name a different leader.
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