The Oat Banner

Venus Transit

Venus Transit

2004 PAST EVENT
2012 LAST RECORDED
2117 NEXT EXPECTED
The "Black Drop" Phenomenon

During the transit, as the planet crosses the edge of the sun, it appears to stretch like a drop of liquid. This is due to diffraction and the thick Venusian atmosphere, which scatters sunlight into a bright ring around the dark disk.

TRANSIT PATTERN: 8, 121.5, 8, & 105.5 YEARS.

The Transit

A Rare Alignment. When Venus crosses the solar disk, it provides a unique window into orbital mechanics and planetary scale.

  • ⏳ Cycle: 243-year recurrence pattern.
  • 📏 Impact: Historically used to measure the AU.
  • 📅 Next: December 11, 2117.
The Oat: TRANSIT_TRACKER
STATUS:
RARE
8-YEAR PAIR GAP

The 243 Cycle

Geometric Precision. Transits occur in a rhythmic 121.5 - 8 - 105.5 - 8 year sequence, governed by the 8:13 orbital resonance.

  • 👯‍♂️ Pairing: Most transits occur in 8-year couples.
  • ⏳ Century Gaps: Gaps exceed 100 years between pairs.
  • 📐 Inclination: 3.4° orbital tilt creates the "miss" window.
🗓️
The Oat: RECURRENCE_IDX
NEXT PAIR:
2117
91 YEARS REMAINING

Last Transit

June 2012. The final time in our century that the inner planet silhouetted against the Sun. A moment of cosmic precision.

  • 🗓️ Last Seen: June 5–6, 2012.
  • 🛰️ Legacy: Used to refine exoplanet detection.
  • ⏳ Gap: No further transits until Dec 2117.
🔭
The Oat: ARCHIVE_V01
ELAPSED TIME:
~14Y
POST-TRANSIT ERA

Parallax Shift

The Universal Yardstick. By measuring the tiny shift in Venus's path from different parts of Earth, we unlocked the true scale of the solar system.

  • 📐 Triangulation: Using 18th-century math to measure 150M km.
  • 🌌 Scale: Established the 'Astronomical Unit' as a standard.
  • 🛰️ Exoplanets: Provides the 'gold standard' for transit light-curves.
📏
The Oat: AU_ESTIMATOR
CALCULATED DIST:
1.0AU
PRECISION: 99.9%

Paper

TRANSIT LOG: OCCULTATION 🔭

Predicting the 2117 Alignment. Measuring the Solar System.

Sources

HISTORICAL PAIRS

Transits occur in pairs 8 years apart, with over a century between the sets (e.g., 2004 and 2012).

NASA ARCHIVE
Next Transit: 2117

BLACK DROP EFFECT

The optical phenomenon where a small "neck" appears to connect the planet to the Sun's edge.

OPTICAL PHYSICS
Lomonosov Effect

MEASURING THE AU

How 18th-century astronomers used the transit and parallax to calculate the distance to the Sun.

HISTORICAL MATH
Distance Scaling

Solar Transit

Venus appearing as a small black dot crossing the solar disk.

2004 vs 2012

NASA composite showing the different paths taken during the 8-year interval.

Global View

Mapping the areas on Earth where the transit was fully visible.

Contact Phases

Pattern: 105.5, 8, 121.5, 8 years

Next Event: Dec 10, 2117

Utility: Measuring the AU (Distance to Sun)

ASTRONOMICAL EVENT
VENUS TRANSIT 3D