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The sky on March 15, 2009 — as it really was

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

РЫБЫОВЕНТЕЛЕЦБЛИЗНЕЦЫРАКЛЕВДЕВАВЕСЫСКОРПИОНЗМЕЕНОСЕЦСТРЕЛЕЦКОЗЕРОГВОДОЛЕЙ ♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎ ♀–♃ 58.0°♄–☽ 61.1° ♀︎13° ♄︎17° ☽︎18° ♃︎15° ♂︎0° ☿︎11° ☉︎25°

Bodies on the ecliptic (noon UTC)

  • ☉︎ Sun — 355.0° · sign Pisces · constellation Pisces
  • ☽︎ Moon — 229.0° · sign Scorpio · constellation Libra
  • ☿︎ Mercury — 341.1° · sign Pisces · constellation Aquarius
  • ♀︎ Venus — 13.9° · sign Aries · constellation Pisces
  • ♂︎ Mars — 330.3° · sign Pisces · constellation Aquarius
  • ♃︎ Jupiter — 315.8° · sign Aquarius · constellation Capricornus
  • ♄︎ Saturn — 167.9° · sign Virgo · constellation Leo
  • ☽︎ Moon 79% 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]

    waning gibbous, 79% lit; the Moon was 394,298 km away.

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

    17.6 orbits of the Sun — 16,502 million km, that is 21,464 return trips to the Moon; 6,413 rotations of Earth; with the Sun — 127.4 billion km around the Galactic centre, 4.9 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 334 million km away; today it is 244 million km (closer by 1.4×).

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

    That day fell in solar cycle 24, right at the minimum (3% through the cycle).

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

    Mars returns to that day’s point of its orbit on January 5, 2028; Jupiter — in 2033; a full moon exactly on this date — March 15, 2052

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

    The vernal point has shifted 864″ 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/ap090315.html

    NASA APOD

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