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The sky on February 18, 1949 — as it really was

That day the Sun stood in Aquarius — sign and constellation agree here.

РЫБЫОВЕНТЕЛЕЦБЛИЗНЕЦЫРАКЛЕВДЕВАВЕСЫСКОРПИОНЗМЕЕНОСЕЦСТРЕЛЕЦКОЗЕРОГВОДОЛЕЙ ♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎ ♄–♂ 177.7° ♄︎3° ☽︎10° ♃︎21° ☿︎5° ♀︎15° ☉︎29° ♂︎5°

Bodies on the ecliptic (noon UTC)

  • ☉︎ Sun — 329.5° · sign Aquarius · constellation Aquarius
  • ☽︎ Moon — 220.1° · sign Scorpio · constellation Libra
  • ☿︎ Mercury — 305.2° · sign Aquarius · constellation Capricornus
  • ♀︎ Venus — 315.1° · sign Aquarius · constellation Capricornus
  • ♂︎ Mars — 335.3° · sign Pisces · constellation Aquarius
  • ♃︎ Jupiter — 291.2° · sign Capricorn · constellation Sagittarius
  • ♄︎ Saturn — 153.1° · sign Virgo · constellation Leo
  • ☽︎ Moon 67% 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.

  1. The Moon that day [EXACT]

    last quarter, 67% lit; the Moon was 371,224 km away.

    astronomy-engine
  2. How far Earth has travelled since [EXACT]

    77.6 orbits of the Sun — 72,954 million km, that is 94,893 return trips to the Moon; 28,354 rotations of Earth; with the Sun — 563.4 billion km around the Galactic centre, 21.8 light-days.

    29.78 km/s along the orbit; 230 km/s around the Galactic centre
  3. Mars then and now [EXACT]

    On that day Mars was 353 million km away; today it is 244 million km (closer by 1.4×).

    astronomy-engine; checked against JPL Horizons for 2026-09-14
  4. When the sky repeats [EXACT]

    Mars returns to that day’s point of its orbit on February 17, 2028; Jupiter — in 2032; a full moon exactly on this date — February 18, 2030

    sidereal periods: Mars 686.98 d, Jupiter 11.862 yr
  5. How far the sky has drifted since [EXACT]

    The vernal point has shifted 3,888″ since that day; the real constellations now sit 23.2° away from the astrologers’ “signs”.

    precession 50.29″/yr

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