An annular solar eclipse will occur on February 17, 2026, creating the phenomenon known as a ring of fire in the sky. The Esse event happens when the Lua is positioned between the Terra and the Sol, but does not completely cover the solar disk due to its greater distance from the Terra.
The annular phase will only be visible in regions remote from Antártida. Já partial phases can be observed in the extreme south of Chile and Argentina, in addition to southern parts of África and Madagascar.
The phenomenon starts at 09:56 UTC time and ends at 14:27 in the same time zone. The maximum duration of annulment reaches 2 minutes and 20 seconds in specific points on the Antarctic continent.
What characterizes an annular eclipse?
Annular solar eclipses differ from total solar eclipses because Lua is at the apogee of its elliptical orbit. Nessa position, the satellite appears smaller in the sky and does not completely block sunlight.
The visual result forms a bright ring around the dark lunar silhouette. Esse ring is popularly called the ring of fire and attracts observers specialized in astronomical phenomena.
The magnitude of the 2026 eclipse reaches 0.963. The Esse value indicates that the Lua will cover about 96% of the solar diameter at maximum time.
Regions of visibility of the phenomenon
The annularity range is concentrated exclusively at Antártida. Expedições specialized scientific and tourist agencies plan trips to bases such as Estação Belgrano II or coastal areas of the frozen continent.
- Antarctica: complete annular phase in a specific trajectory over the ice.
- Extreme south of Chile: partial eclipse in locations such as Punta Arenas.
- Southern end of Argentina: partial visibility in southern Patagônia.
- Sul of África: partial portions in countries such as África of the South.
- Madagascar: partial observation in the south of the island.
These areas record variable partial coverage between 10% and 40% of the solar disk. Fora of these regions, the event will not be noticeable to the naked eye.
Times and duration in different locations
The eclipse begins its partial phase at 09:56 UTC at extreme points. The annularity maximum occurs around 12:11 UTC in specific Antarctic coordinates.
The annular phase lasts a maximum of 2 minutes and 20 seconds. In regions of partial visibility, the phenomenon lasts for around three hours in total.
Locations in southern Chile observe the start at around 07:56 local daylight time. Na Argentina austral, times are close to 08:00 local time during the summer.
How celestial alignment occurs
Perfect alignment requires that Lua crosses the ascending node of its orbit. In 2026, this condition will be fulfilled on February 17th.
The distance from Lua to Terra varies between 363 thousand and 405 thousand kilometers. At apogee, the apparent diameter reduces enough to create the annular effect.
Scientists use these events to study the solar corona under specific conditions. Observações from Antártida offer a clean atmosphere and low light interference.
Security measures for observation
Direct observation of Sol causes irreversible damage to the retina within a few seconds. Especialistas recommend the exclusive use of filters certified to ISO 12312-2.
Eclipse glasses from previous events remain valid if they are free of scratches. Telescópios and binoculars require adequate solar filters on the front objective.
- Never look directly at the Sol without adequate protection.
- Use projection method with box or perforated paper for groups.
- Check equipment in advance in specialized stores.
- Avoid improvised filters such as radiographic films or CDs.
Even during the annular phase, the bright ring maintains dangerous intensity. Eye protection is mandatory at all times during the event.
Preparation for Antarctic expeditions
Expeditions to Antártida require planning months in advance due to the extreme conditions. Operadores specialized tourists offer packages to coincide with the date of the eclipse.
Science bases like McMurdo or Amundsen-Scott prepare additional infrastructure. Pesquisadores install instruments to record variations in the ionosphere and temperature.
The Antarctic summer makes access easier between November and February. Navios cruises depart from ports like Ushuaia on Argentina or Punta Arenas on Chile.
Weather conditions remain unpredictable on the continent. Nuvens dense areas can obscure visibility even on planned days.
Scientific importance of the event
Annular eclipses allow studies of the solar chromosphere without coronagraph equipment. Dados collected contributes to solar activity models and space predictions.
Observations since Antártida record low natural light contamination. Instrumentos capture fine details of the sun’s edge during alignment.
Space agencies monitor impacts on the propagation of radio waves. Variações occur due to temporary change in atmospheric ionization.
Comparison with other recent eclipses
The 2026 annular eclipse follows a pattern of events in saros cycle 131. Esse cycle repeats alignments approximately every 18 years.
Compared to the 2023 annulus visible in Américas, the 2026 annulus is restricted to polar regions. Accessibility is significantly reduced for ordinary observers.
Upcoming events include Total in August 2026 at Europa. Já in 2027, another annulus will cross parts of América from Sul.
Tips for recording the phenomenon
Specialist photographers use telephoto lenses with dedicated solar filters. Exposições short captures details of the ring during the maximum phase.
Tripods stabilize equipment in Antarctic wind conditions. Baterias extras combat the extreme cold that reduces autonomy.
Mobile applications provide accurate path simulations. Interactive Mapas indicate ideal positions within the limited range.
Expected atmospheric conditions
Antártida records frequent clear skies during the southern summer. Temperaturas vary between -10°C and 0°C in coastal areas during February.
Katabatic winds can generate brief visual turbulence. Fixed Observatórios have protected domes to mitigate these effects.
Specific weather forecasts approach the date. Satélites monitor cloud cover in real time for last-minute adjustments.
The annular solar eclipse of February 17, 2026 represents a unique opportunity for scientific records in an extreme environment. The phenomenon reinforces global interest in predictable astronomical events and their safe observation.
