The sky on October 16, 2009 — as it really was
That day the Sun stood in Virgo, while the horoscope says "Libra". The gap is 24.0° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 203.3° · sign Libra · constellation Virgo
- ☽︎ Moon — 180.9° · sign Libra · constellation Virgo
- ☿︎ Mercury — 189.8° · sign Libra · constellation Virgo
- ♀︎ Venus — 181.9° · sign Libra · constellation Virgo
- ♂︎ Mars — 119.9° · sign Cancer · constellation Cancer
- ♃︎ Jupiter — 317.2° · sign Aquarius · constellation Capricornus
- ♄︎ Saturn — 178.5° · sign Virgo · constellation Virgo
- ☽︎ Moon 4% 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]
new moon, 4% lit; the Moon was 372,625 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
17 orbits of the Sun — 15,948 million km, that is 20,744 return trips to the Moon; 6,198 rotations of Earth; with the Sun — 123.2 billion km around the Galactic centre, 4.8 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 195 million km away; today it is 244 million km (farther by 1.3×).
astronomy-engine; checked against JPL Horizons for 2026-09-14 - Solar cycle [ESTIMATE]
That day fell in solar cycle 24, right at the minimum (8% through the cycle).
SILSO smoothed minima - When the sky repeats [EXACT]
Mars returns to that day’s point of its orbit on August 7, 2028; Jupiter — in 2033; a full moon exactly on this date — October 15, 2027
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 828″ since that day; the real constellations now sit 24° 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/ap091016.html
NASA APOD
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