The sky on December 11, 1951 — as it really was
That day the Sun stood in Ophiuchus, while the horoscope says "Sagittarius". The gap is 23.2° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 258.6° · sign Sagittarius · constellation Ophiuchus
- ☽︎ Moon — 57.5° · sign Taurus · constellation Taurus
- ☿︎ Mercury — 270.9° · sign Capricorn · constellation Sagittarius
- ♀︎ Venus — 214.0° · sign Scorpio · constellation Virgo
- ♂︎ Mars — 189.7° · sign Libra · constellation Virgo
- ♃︎ Jupiter — 4.5° · sign Aries · constellation Pisces
- ♄︎ Saturn — 193.3° · sign Libra · constellation Virgo
- ☽︎ Moon 96% illuminated
astronomy-engine ephemerides (VSOP87/ELP), IAU 1930 constellation boundaries. Positions accurate to a fraction of a degree.
The day’s dossier, from real data
Checkable facts with a tag and a source; the classical reading is in the chart.
- The Moon that day [EXACT]
full moon, 96% lit; the Moon was 399,258 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
74.8 orbits of the Sun — 70,315 million km, that is 91,461 return trips to the Moon; 27,328 rotations of Earth; with the Sun — 543.1 billion km around the Galactic centre, 21 light-days.
29.78 km/s along the orbit; 230 km/s around the Galactic centre - Mars then and now [EXACT]
On that day Mars was 261 million km away; today it is 243 million km (closer by 1.1×).
astronomy-engine; checked against JPL Horizons for 2026-09-14 - When the sky repeats [EXACT]
Mars returns to that day’s point of its orbit on March 6, 2027; Jupiter — in 2034; a full moon exactly on this date — December 11, 2057
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 3,744″ since that day; the real constellations now sit 23.2° away from the astrologers’ “signs”.
precession 50.29″/yr
Other dates
Computed from the date only; nothing about you is stored.