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The sky on January 13, 2016 — as it really was

That day the Sun stood in Sagittarius, while the horoscope says "Capricorn". The gap is 24.1° of precession.

РЫБЫОВЕНТЕЛЕЦБЛИЗНЕЦЫРАКЛЕВДЕВАВЕСЫСКОРПИОНЗМЕЕНОСЕЦСТРЕЛЕЦКОЗЕРОГВОДОЛЕЙ ♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎ ♃–☉ 119.5°♃–☿ 122.1°♂–☽ 121.7° ♃︎23° ♂︎5° ♄︎12° ♀︎17° ☉︎22° ☿︎25° ☽︎7°

Bodies on the ecliptic (noon UTC)

  • ☉︎ Sun — 292.7° · sign Capricorn · constellation Sagittarius
  • ☽︎ Moon — 337.1° · sign Pisces · constellation Aquarius
  • ☿︎ Mercury — 295.3° · sign Capricorn · constellation Sagittarius
  • ♀︎ Venus — 257.3° · sign Sagittarius · constellation Ophiuchus
  • ♂︎ Mars — 215.4° · sign Scorpio · constellation Virgo
  • ♃︎ Jupiter — 173.2° · sign Virgo · constellation Leo
  • ♄︎ Saturn — 252.4° · sign Sagittarius · constellation Ophiuchus
  • ☽︎ Moon 14% 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]

    waxing crescent, 14% lit; the Moon was 370,474 km away.

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

    10.7 orbits of the Sun — 10,078 million km, that is 13,109 return trips to the Moon; 3,917 rotations of Earth; with the Sun — 77.8 billion km around the Galactic centre, 3 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 233 million km away; today it is 246 million km (farther by 1.1×).

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

    That day fell in solar cycle 24, on the decline (65% through the cycle).

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

    Mars returns to that day’s point of its orbit on April 27, 2027; Jupiter — in 2028; a full moon exactly on this date — January 13, 2036

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

    The vernal point has shifted 540″ since that day; the real constellations now sit 24.1° 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/ap160113.html

    NASA APOD

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