The final supermoon of 2019 delivered a striking finale to a year of celestial highlights. This full moon appeared larger and brighter, setting the stage for reflection on its astronomical significance and cultural resonance.
Skywatchers around the world noted the enhanced illumination and vivid detail along the lunar limb during this memorable December event, which ranked among the closest full moons of the year.
| Event | Date | Moonrise (Local) | Moonset (Local) |
|---|---|---|---|
| Last Supermoon of 2019 | 12 December 2019 | ~4:45 PM | ~7:20 AM |
| Peak Fullness | 12 December 2019, 12:12 UTC | — | |
| Apparent Diameter | ~33.5 arcminutes | ||
| Miss Distance at Fullness | ~356,965 km | ||
December 2019 Celestial Timing
Full Moon and Supermoon Alignment
December 2019 featured a full moon that coincided with perigee, qualifying it as a supermoon. This alignment produced noticeable size and brightness differences compared with average full moons, supporting vivid observations worldwide.
The precise timing of fullness placed the moon near its closest approach for the month, reinforcing the visual impact and driving strong public interest in sky events calendars.
Visual Characteristics Observation
Size, Brightness, and Surface Detail
Photographers and casual observers captured an enlarged lunar disk with sharper definition along crater walls and mare boundaries. The supermoon appeared up to 7 percent larger and 30 percent brighter than a micromoon, creating a striking contrast during clear nights.
At moonrise, celestial effects such as the “moon illusion” enhanced the perception of scale, while atmospheric clarity revealed subtle shading and geological features across the lunar surface.
Global Cultural Responses
Traditions, Photography, and Public Engagement
Communities integrated the supermoon into existing winter celebrations and storytelling events, using the bright moonlight to extend evening activities. Social media platforms amplified engagement as photographers shared detailed images and time-lapse sequences.
Educational institutions leveraged public interest to host observation sessions and explain orbital mechanics, linking ancient moon lore with contemporary astronomical data.
Orbital Mechanics Context
Perigee, Eccentricity, and Long-Term Patterns
The supermoon resulted from the moon reaching perigee within a short window of full phase, a pattern governed by the eccentricity of its elliptical orbit. Apsidal precession shifts perigee over multiple years, altering timing and distance across decades.
By examining long-term ephemerides, enthusiasts can predict similar perigee full moons, while understanding why the December event was among the closest of 2019.
Key Takeaways
- Achieved supermoon status with perigee within hours of full phase.
- Appeared up to 7 percent larger and 30 percent brighter than average full moons.
- Marked the final supermoon opportunity of the 2019 calendar year.
- Enhanced public engagement through photography and educational outreach.
- Illustrates how orbital mechanics drive predictable yet striking lunar events.
FAQ
Reader questions
When was the last supermoon of 2019 visible worldwide?
It peaked in fullness on 12 December 2019 UTC and remained visually impressive for several hours around moonrise and moonset across most populated regions.
How did this supermoon compare in size to the January 2018 supermoon?
The December 2019 supermoon was slightly larger and brighter than the January 2018 event because its perigee occurred closer to the exact moment of fullness.
What photography settings worked best for capturing the December 2019 supermoon?
Telephoto lenses around 200–400 mm, low ISO to reduce noise, and shutter speeds near 1/125 to 1/250 second delivered crisp details without motion blur during clear conditions. Yes, the closer perigee produced stronger tidal ranges, with noticeably higher high tides and lower low tides in coastal areas during the December full moon period.