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The sky on January 29, 2012 — as it really was

That day the Sun stood in Capricornus, while the horoscope says "Aquarius". The gap is 24.0° of precession.

РЫБЫОВЕНТЕЛЕЦБЛИЗНЕЦЫРАКЛЕВДЕВАВЕСЫСКОРПИОНЗМЕЕНОСЕЦСТРЕЛЕЦКОЗЕРОГВОДОЛЕЙ ♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎ ♃–♄ 177.1°♃–☿ 89.5° ☽︎20° ♃︎2° ♂︎22° ♄︎29° ☿︎2° ☉︎8° ♀︎18°

Bodies on the ecliptic (noon UTC)

  • ☉︎ Sun — 309.0° · sign Aquarius · constellation Capricornus
  • ☽︎ Moon — 20.9° · sign Aries · constellation Pisces
  • ☿︎ Mercury — 302.9° · sign Aquarius · constellation Capricornus
  • ♀︎ Venus — 348.4° · sign Pisces · constellation Aquarius
  • ♂︎ Mars — 172.9° · sign Virgo · constellation Virgo
  • ♃︎ Jupiter — 32.4° · sign Taurus · constellation Aries
  • ♄︎ Saturn — 209.4° · sign Libra · constellation Virgo
  • ☽︎ Moon 35% 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]

    first quarter, 35% lit; the Moon was 403,319 km away.

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

    14.7 orbits of the Sun — 13,796 million km, that is 17,945 return trips to the Moon; 5,362 rotations of Earth; with the Sun — 106.6 billion km around the Galactic centre, 4.1 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 121 million km away; today it is 246 million km (farther by 2×).

    astronomy-engine; checked against JPL Horizons for 2026-09-14
  4. Solar cycle [ESTIMATE]

    That day fell in solar cycle 24, on the rise to maximum (29% through the cycle).

    SILSO smoothed minima
  5. When the sky repeats [EXACT]

    Mars returns to that day’s point of its orbit on February 15, 2027; Jupiter — in 2036; a full moon exactly on this date — January 29, 2040

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

    The vernal point has shifted 720″ since that day; the real constellations now sit 24° away from the astrologers’ “signs”.

    precession 50.29″/yr
  7. Picture of the day [EXACT]

    NASA Astronomy Picture of the Day for this date: apod.nasa.gov/apod/ap120129.html

    NASA APOD

Other dates

2012-01-28 2012-01-30 everyone born January 29
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