The sky on September 22, 1998 — as it really was
That day the Sun stood in Virgo — sign and constellation agree here.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 179.3° · sign Virgo · constellation Virgo
- ☽︎ Moon — 198.9° · sign Libra · constellation Virgo
- ☿︎ Mercury — 176.5° · sign Virgo · constellation Virgo
- ♀︎ Venus — 169.5° · sign Virgo · constellation Leo
- ♂︎ Mars — 140.7° · sign Leo · constellation Leo
- ♃︎ Jupiter — 352.2° · sign Pisces · constellation Aquarius
- ♄︎ Saturn — 32.4° · sign Taurus · constellation Pisces
- ☽︎ Moon 3% 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, 3% lit; the Moon was 405,331 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
28 orbits of the Sun — 26,348 million km, that is 34,271 return trips to the Moon; 10,240 rotations of Earth; with the Sun — 203.5 billion km around the Galactic centre, 7.9 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 343 million km away; today it is 244 million km (closer by 1.4×).
astronomy-engine; checked against JPL Horizons for 2026-09-14 - Solar cycle [ESTIMATE]
That day fell in solar cycle 23, right at the minimum (17% through the cycle).
SILSO smoothed minima - When the sky repeats [EXACT]
Mars returns to that day’s point of its orbit on December 9, 2026; Jupiter — in 2034; a full moon exactly on this date — September 22, 2048
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 1,404″ since that day; the real constellations now sit 23.8° 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/ap980922.html
NASA APOD
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