The sky on January 29, 1999 — as it really was
That day the Sun stood in Capricornus, while the horoscope says "Aquarius". The gap is 23.9° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 309.1° · sign Aquarius · constellation Capricornus
- ☽︎ Moon — 101.2° · sign Cancer · constellation Gemini
- ☿︎ Mercury — 305.1° · sign Aquarius · constellation Capricornus
- ♀︎ Venus — 331.0° · sign Pisces · constellation Aquarius
- ♂︎ Mars — 211.2° · sign Scorpio · constellation Virgo
- ♃︎ Jupiter — 356.9° · sign Pisces · constellation Pisces
- ♄︎ Saturn — 27.6° · sign Aries · constellation Pisces
- ☽︎ Moon 94% 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]
waxing gibbous, 94% lit; the Moon was 371,876 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
27.7 orbits of the Sun — 26,016 million km, that is 33,840 return trips to the Moon; 10,111 rotations of Earth; with the Sun — 200.9 billion km around the Galactic centre, 7.8 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 180 million km away; today it is 244 million km (farther by 1.4×).
astronomy-engine; checked against JPL Horizons for 2026-09-14 - Solar cycle [ESTIMATE]
That day fell in solar cycle 23, on the rise to maximum (20% through the cycle).
SILSO smoothed minima - When the sky repeats [EXACT]
Mars returns to that day’s point of its orbit on April 17, 2027; Jupiter — in 2035; a full moon exactly on this date — January 29, 2040
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 1,368″ since that day; the real constellations now sit 23.9° away from the astrologers’ “signs”.
precession 50.29″/yr - Picture of the day [EXACT]
NASA Astronomy Picture of the Day for this date: apod.nasa.gov/apod/ap990129.html
NASA APOD
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