Simon Donaldson
Simon Donaldson (born August 20, 1957, Cambridge, United Kingdom), aged 69, is an English mathematician. Donaldson's honours include Fields medal, Knight Bachelor and Pólya Prize.
Simon Donaldson’s zodiac sign is Leo, and in the Chinese zodiac they are a Fire Rooster, with Life Path 5 in numerology.
Leo, and in the Chinese zodiac they are a 
Fire Rooster, with 
Life Path 5 in numerology.How compatible are you with Simon Donaldson?
Your birthday, just below, gives your match percentage with Simon. Under a minute.
Your AsterNym Match
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Two details and you have your number with Simon. Under a minute, and it is real astrology, not a quiz.
Your result includes:
- · Your compatibility percentage
- · What attracts you to each other
- · What you would bring to the match
- · Where you might clash
- · Whether you share lucky numbers, colours, stones or seasons
Simon Donaldson’s AsterNym identity
The Evergreen Architect
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) × fixed Sun × Life Path 5, on the physical plane.
How common is the name Simon in the U.S.?
#230
US rank in 2025
~70,444
Americans share it since 1880
2015
its peak year
US Social Security Administration public records
Simon’s lucky numbers, colours and stones
Traditional correspondences calculated from AsterNym’s astrology, wuxing and numerology system.
Lucky numbers
5 · 7 · 8
Lucky colours
Red & Orange
Lucky day
Sunday
Direction
↓ South
Season
summer
Stones
Peridot, Ruby, Carnelian
Flower constellation
🌸 Gladiolus · 🌻 Sunflower · 🌺 Poppy
Coral · Gold · Flame orange
The same wuxing & numerology correspondences as your own print. One tradition, read for everyone
What the chart says
Simon, according to the stars
Core essence
Simon is warm the way the sun is warm: not trying, just doing it. The core of Simon is a big open heart and a need to be seen loving with it. They are generous with praise, with time, with the spotlight when they trust you, and they will remember every kindness you paid them for years. Loyal to a fault, and glad of the fault.
The vibe
Underneath, Simon processes by talking. The Moon in Gemini means a feeling is not real until it has been said out loud, ideally to two people, ideally with a joke attached. What Simon needs to feel safe is someone who will listen to the whole thought, including the three tangents, without rushing them to a point.
How Simon creates
How Simon makes things happen: they grow upward. A Yang Wood day master is the tree, the one with a direction and the patience to keep at it through a bad season. Simon builds in the open, wants to be useful, and is at their most creative when there is something to reach for. Bend rather than break is the lesson they learn a few times.
Instinct
Instinct: Simon is sharp and confident, a Rooster year, and their gut reaction is to say the true thing out loud. Observant, hardworking, honest, and proud of looking the part. The Fire year turns the volume up: warmer, bolder, more expressive, harder to overlook.
Purpose
Purpose: Life Path 5 is the free spirit. Simon 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: sloppiness, and being told they are overthinking it. Mars in Virgo means Simon 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 Simon's birth date, not guessed. The full working is below.
Where Simon sits
Six lines. Tap where you sit on each.
Simon’s dot is placed from the chart. Yours is wherever you put it.
You may draw energy from a wide network, many doors, lightly held.
You likely weigh most decisions but can move fast when it matters.
You likely share some feelings openly and keep others to yourself.
You may want to resolve tension the moment it appears, rather than let it sit.
You likely balance practical steps with room to imagine further.
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 Simon Donaldson
Three stars chosen from the real sky above Cambridge on the night they were born. Choose the story that connects you.
No public birth time is available, so this is a 9:00 p.m. reference evening sky for that date and place. It is connected to the night of birth; it is not the sky at the birth minute, and no other reading on this page uses that time. Dedications are commemorative AsterNym records and do not rename or confer ownership of stars.
Simon Donaldson at a glance
Leo Sun
Leo SunThe room rearranges itself.
Simon Donaldson's Sun was in Leo for the whole of August 20, 1957, so no birth time is needed to settle it. Traditional Leo readings associate the sign with warmth, visibility and generosity: a natural claim on attention and a habit of handing it back as encouragement. Astrologers describe it as the fixed fire sign, ruled by the Sun. The corresponding tension is pride, with the classical caution that the need to be seen can crowd out people who would rather not be.
Fire Rooster
Fire RoosterSays what everyone was thinking.
Simon Donaldson was born on August 20, 1957, which falls in a Fire Rooster year of the Chinese calendar. Traditional Rooster readings emphasise precision, candour and pride in appearance and in work done properly. The Chinese almanacs describe the Rooster as observant and punctual, the sign that notices and says so. The corresponding caution in the tradition is vanity, and a frankness that arrives before anyone asked for it.
Life Path 5
Life Path 5Can't sit still. Won't try.
Simon Donaldson's birth date, August 20, 1957, reduces to Life Path 5 under the numerology method AsterNym uses. Traditional Life Path 5 readings associate the number with freedom, change and variety: movement, new experience and resistance to restrictive routine. Numerologists describe it as the path of the traveller, adaptable and restless. The corresponding tension is instability, with the caution that constant motion can become a way of avoiding commitment to any one direction.
What stands out in Simon’s chart
- The tightest major aspect in Simon Donaldson's date-only chart is Mars square Saturn, with an orb of under 1°.
- Three planets, Mercury, Mars and Pluto, sit together in Virgo, which astrologers call a stellium.
- Five of the ten planets fall in Mutable signs, making Mutable the strongest modality in this chart.
- Simon Donaldson combines a Wood Day Master in BaZi with a fixed Sun and a Life Path on the physical plane, the combination AsterNym calls The Evergreen Architect.
Simon’s birth chart
Reference chart · birth time unknown
No documented birth time exists for Simon Donaldson, so the positions below are checked across the whole birth date, not fixed at noon. The Moon ranges from 12° to 25° Gemini depending on the hour. The wheel's houses are a solar chart, counted from the Sun's sign, because the Ascendant needs a time.
No birth time, so the houses are a solar chart: the Sun’s sign counts as house 1. A documented time would place them from the Ascendant instead.
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
Stable aspects hold for any birth hour. Possible ones depend on the hour, so their orb is a range rather than a number. Orb policy western_v1.
stableMarssquareSaturn0.0° to 0.3° orb
Simon’s drive grinds against their discipline.
stableNeptunesextilePluto0.2° orb
Simon’s imagination opens doors for their depths. An easy alliance, and it pays off when it is used.
stableSaturntrineUranus0.8° orb
Simon’s discipline flows straight into their need for freedom.
stableVenusconjunctionJupiter1.5° to 2.5° orb
Simon’s affections and growth act as one.
stableSunconjunctionPluto2.4° to 3.4° orb
Simon’s core identity and depths act as one. Each makes the other louder.
stableSunsextileNeptune2.6° to 3.6° orb
Simon’s core identity opens doors for their imagination. Nothing happens until someone makes the first move.
stableMercuryconjunctionVenus7.0° to 7.6° orb
Simon’s mind and affections act as one. Wherever one goes, the other is already there.
possibleMoonsquareMercuryorb from 0.1° to 10.9° depending on birth time
possibleSunsextileMoonorb from 2.1° to 14.6° depending on birth time
possibleMoonsextileUranusorb from 3.5° to 16.9° depending on birth time
possibleMoonoppositionSaturnorb from 4.3° to 17.8° depending on birth time
possibleMoonsquareMarsorb from 4.6° to 17.4° depending on birth time
Chart signature
Elements
- Fire3 of 10
- Earth3 of 10
- Air3 of 10
- Water1 of 10
Modalities
- Cardinal2 of 10
- Fixed3 of 10
- Mutable5 of 10
Counted across the ten planets by sign.
Simon’s Chiron, Ceres, Eros, Hygiea and Lilith
Four minor bodies and the mean lunar apogee, placed in the same tropical zodiac as the planets above. None of these feed the chart signature, the rarity score or any ranking on this site: they are listed for readers who use them. Chiron, Ceres, Eros and Hygiea positions come from JPL Horizons; Black Moon Lilith is the mean apogee, the point most published Lilith tables use. The readings are the modern tradition’s, not AsterNym’s. Without a birth time the degree is the noon value and the day's movement is shown alongside it.
⚷ Chiron ℞Aquarius 14°08′ (moves 0.05° over the day)
centaur (2060) · the wound and what is learnt from it
Chiron in Aquarius is read as a wound around fitting in. The tradition has Simon making a place among outsiders and keeping the door open for the next one.
⚳ CeresCancer 6°14′ (moves 0.37° over the day)
dwarf planet (1) · how a person nurtures and wants to be nurtured
Ceres in Cancer sits in the sign the tradition links to it most closely: care as instinct. Simon is read as someone for whom looking after others is not a decision.
♡ ErosVirgo 13°42′ (moves 0.87° over the day)
near-Earth asteroid (433) · what draws them and how they desire
Eros in Virgo is read as desire expressed through attention to detail: noticing, improving, being useful. Simon is read as slow to start and exact once started.
⚕ Hygiea ℞Aries 20°10′ (moves 0.04° over the day)
main-belt asteroid (10) · health, routine and what keeps them well
Hygiea in Aries is read as health kept through action and short bursts. The reading has Simon feeling well when moving and poorly when made to wait.
⚸ Black Moon LilithPisces 9°29′ (moves 0.11° over the day)
mean lunar apogee · the part that refuses to be tamed
Black Moon Lilith in Pisces is read as a refusal to be reasonable about longing. Simon is read as someone whose imagination goes where it is not invited.
Aspects to the asteroids and Lilith
Major aspects only, at a tight 3° orb. The Moon is left out because its position moves 13° across an untimed day.
- Ceres sextile Mars 1.5°
- Black Moon Lilith opposition Mars 1.7°
- Black Moon Lilith square Saturn 1.7°
Method: JPL Horizons heliocentric vectors, 1700–2100, cubic Hermite interpolation; geocentric, true ecliptic of date, tropical; geometric (no light-time or aberration); Lilith = mean lunar apogee (Chapront/Meeus mean perigee + 180°).
Simon’s dominant planets
Scored from rulerships, dispositors and aspect count. Without a birth time there is no Ascendant or house to score, and the Moon's sign is left out where it could change with the hour.
1. ☉ Sun8 pts
rules the Sun sign, Leo; in its own sign, Leo; disposes Uranus; 2 major aspects
2. ☿ Mercury5 pts
in its own sign, Virgo; disposes Mars, Pluto; 1 major aspect
3. ♀ Venus5 pts
in its own sign, Libra; disposes Jupiter; 2 major aspects
A Sun-led chart is read as identity out front: Simon is read as someone whose sense of self organises everything else.
How the score is built
- Rules the Sun sign, Moon sign or Ascendant sign: 3 points each (traditional co-rulers of Scorpio, Aquarius and Pisces score half).
- Sits in a sign it rules: 2 points.
- Disposes another planet (that planet sits in a sign it rules): 1 point each.
- Angular: 2 points in the first or tenth house, 1 point in the fourth or seventh (timed births only).
- Every major aspect it makes: 1 point.
Dominance scoring is an AsterNym method. Other sites weight differently and can name a different leader for the same chart.
Configurations in Simon’s chart
Closed shapes among the ten planets under the site’s one aspect-orb policy. The Moon is excluded without a birth time, so a shape that needs it is not claimed.
No stellium, grand trine, T-square, grand cross, yod or kite closes among the planets that can be placed. That is the common case, not a gap.
Minor aspects
semi-sextile 30° (orb 2°), semi-square 45° (orb 2°), quintile 72° (orb 1.5°), sesquiquadrate 135° (orb 2°), biquintile 144° (orb 1.5°), quincunx 150° (orb 2.5°). Pairs already in a major aspect are not repeated. Moon excluded without a birth time.
- Venus semi-sextile Neptune 0.3°
- Mercury semi-square Uranus 0.4°
- Venus semi-sextile Pluto 0.5°
- Mars semi-sextile Uranus 0.8°
Houses need a birth time. None is documented for Simon Donaldson, so no house placements are claimed for the planets or the minor bodies above.
More people like Simon
Other mathematicians
Born in United Kingdom
- Daniel Day-LewisBritish actor
- Stephen FryBritish comedian, actor, writer, presenter, and activist
- Kim CattrallBritish–Canadian actress
- Tony AbbottPrime Minister of Australia from 2013 to 2015
- Carol Ann DuffyScottish poet and playwright (born 1955)
- Miranda RichardsonBritish actress
More charts like Simon’s
Fellow Leo suns
- Jesse Lynch WilliamsAmerican dramatist
- Paul HorganAmerican historian
- Booth TarkingtonAmerican novelist
Born in Rooster years
- Miranda CosgroveAmerican actress and producer
- Felipe MassaBrazilian race car driver
- Paavo NurmiFinnish middle and long distance runner
Also born on August 20
- Andrew Garfield1983
- Amy Adams1974
- Robert Plant1948
- Ke Huy Quan1971
- N. R. Narayana Murthy1946
- Linus Sebastian1986
Fellow Yang Wood day masters
- Arthur KennedyAmerican actor
- Brady CorbetAmerican film director and actor
- Kingsley AmisEnglish novelist, poet, critic and teacher
Other Leo Rooster charts
- Kon KnueppelAmerican basketball player (born 2005)
- Javonte GreenAmerican basketball player (born 1993)
- Cam ChristieAmerican basketball player
- Andre DrummondAmerican basketball player (born 1993)
Other Evergreen Architects
- Mick JaggerBritish singer and songwriter; vocalist of The Rolling Stones
- David GuettaFrench DJ and electronic music producer
- Courteney CoxAmerican actress and producer
- Christina RicciAmerican actress
Famous people with Life Path 5
- Chris PerfettiAmerican actor
- Francia RaisaAmerican actress
- Kelly Rizzojournalist
From the journal: Compatibility triangles: the four trines explained · Your Kua number, and why it splits households
Simon’s cards
Every card is computed from August 20, 1957, none chosen. Tap one to flip it.
☉ Ruled by Sun
Gold Au
Tap to flip
The working: BaZi pillarsshow
BaZi pillars
Day Master: yang Wood.
Year
丁
yin Fire
酉
Rooster
Metal
roots & early life
Month
戊
yang Earth
申
Monkey
Metal
work & drive
Day
day master
甲
yang Wood
子
Rat
Water
you & partnership
No birth time is on public record for Simon Donaldson, so this chart has three pillars rather than four. The hour pillar, the rising sign and the birth-sky star all need a time, and we would rather leave them out than invent one.
Where this data comes from
Simon’s birth date and birthplace come from Wikidata Q334039, released under CC0, as do the occupations, works, teams and awards in the biography above. No documented birth time is available, so this chart is rated X on the Rodden scale, the astrological convention for how well evidenced a birth time is. Time-dependent results use a clearly labelled reference time and should not be read as their exact birth chart. Entries are matched to Wikidata by entity id rather than by name, kept only at day precision, and dropped where sources disagree on the date.
Portrait by Greuel, Gert-Martin, CC BY-SA 2.0 de, via Wikimedia Commons.
The same Simon Donaldson at Wikipedia.
Roster last reviewed September 10, 2026. Every entry is checked against its Wikidata record; where a person shares a name with someone else, the entity id is what settles which of them this is. What we will not tell you sets out the claims this site refuses to make.
These are traditional interpretations, not facts or predictions. AsterNym is not affiliated with or endorsed by Simon Donaldson.
Quick answers about Simon Donaldson’s chart
- How old is Simon Donaldson?
- Simon Donaldson is 69 years old, born August 20, 1957 in Cambridge, United Kingdom.
- What zodiac sign is Simon Donaldson?
- Simon Donaldson is a Leo: born August 20, 1957, which puts the Sun in Leo for the whole of that day. That is the Western star sign. In the Chinese zodiac they are a Fire Rooster.
- What is Simon Donaldson's Chinese zodiac animal?
- The Rooster, with the Fire element, from the Chinese lunar year of the August 20, 1957 birth.
- What time was Simon Donaldson born?
- No reliably documented birth time is public, so AsterNym does not calculate an Ascendant. This chart uses date-only positions: the wheel shows a reference solar chart (the Sun's sign as house 1), and the Ascendant is left uncomputed instead of guessed from an unverified time.
- What is Simon Donaldson's Life Path number?
- Life Path 5, calculated in numerology from the August 20, 1957 birth date.
- What is Simon Donaldson's Chiron sign?
- Chiron in Aquarius at 14°. Position from JPL Horizons for the August 20, 1957 birth date.
- Where is Simon Donaldson's Black Moon Lilith?
- Mean Black Moon Lilith in Pisces at 9°. This is the mean lunar apogee; the osculating Lilith some tables use can sit up to 30° away.
- What is Simon Donaldson's dominant planet?
- Sun, on AsterNym's dominance score (8 points: rules the Sun sign, Leo; in its own sign, Leo; disposes Uranus; 2 major aspects). Mercury is second and Venus third. Other sites weight rulerships and aspects differently and can name a different leader.
