Draconids
A Northern Hemisphere shower known for rare, intense meteor storms.
The Draconids, also known historically as the Giacobinids, are a meteor shower visible primarily in the Northern Hemisphere. They are named after the constellation Draco, from which they appear to radiate, and their parent body is the periodic comet 21P/Giacobini-Zinner. The shower is notable for occasional dramatic outbursts, including some of the most impressive meteor storms of the 20th century, though most meteors ablate before reaching Earth's surface.
Quick Facts
- Pronounce
- d · r · ə · ˈ · k · oʊ · n · ɪ · d · z
- Parent
- 21P/Giacobini-Zinner
- Constellation
- Draco (constellation)
- Ra
- 17.467
- Dec
- +54
- Month
- October 6 – October 10
- Peak
- October 8
- Velocity
- 20
- Zhr
- variable
Facts from the source article.
Lore & Background
The Draconids have produced some of the most remarkable meteor storms of the 20th century, with the 1933 and 1946 displays reaching zenithal hourly rates of thousands of meteors per hour. These outbursts occur when Earth passes through denser regions of the cometary debris stream left by 21P/Giacobini-Zinner. In 1998, rates suddenly spiked, while the 2005 outburst was more modest. A predicted outburst on October 8, 2011, was partially obscured by a waxing gibbous Moon, reducing visual counts. During the 2012 shower, radar observations detected up to 1,000 meteors per hour, likely caused by a narrow trail of dust from the parent comet in 1959. A brief outburst was expected on October 8, 2025, with a projected ZHR of approximately 400, and a potential storm in October 2098 could reach 20,000 meteors per hour.
Reader's Guide
The Draconids hold a significant place in meteor astronomy due to their capacity for sudden, intense outbursts that can rival the most famous meteor storms. The article highlights that the 1933 and 1946 events were among the most impressive of the 20th century, demonstrating the shower's potential for dramatic displays. However, activity is highly variable: some years see only modest increases, as in 2005, while others, like 2012, yield high rates detectable by radar. The shower's legacy includes its connection to comet 21P/Giacobini-Zinner and the study of cometary debris trails, which allow predictions of future outbursts, such as the expected 2025 event and the possible 2098 storm. Observers are advised to view after sunset under clear, dark skies, though moonlight can hinder visual observations, as seen in 2011. The Draconids thus serve as a key example of how meteor showers can vary dramatically based on Earth's interaction with cometary material.
Did You Know?
- The Draconids were also unofficially known as the Giacobinids.
- The 1933 and 1946 Draconids had zenithal hourly rates of thousands of meteors per hour.
Frequently Asked Questions
What are the Draconids and where do they seem to come from in the sky?
The Draconids are a Northern Hemisphere meteor shower whose streaks appear to radiate outward from the constellation Draco. They carry the alternate historical name Giacobinids, a reference to their parent comet.
Which comet is responsible for the Draconids?
The periodic comet 21P/Giacobini-Zinner sheds the dust trail that Earth periodically crosses, producing the Draconid meteors. The particles are small enough that virtually all of them burn up in the upper atmosphere before any could hit the ground.
When is the best time to watch the Draconids?
The shower is most visible after sunset, when the Draco radiant sits high enough above the horizon for a good viewing window. The baseline annual rate is modest, but the shower is famous for rare, explosive outbursts that can dwarf typical meteor showers.
What made the 1933 and 1946 Draconid events so legendary?
During those two years, observers across the Northern Hemisphere counted thousands of meteors per hour, ranking them among the most spectacular meteor storms of the twentieth century. Those extreme peaks are the reason the Draconids remain a favorite topic among meteor-enthusiast communities despite their usually quiet annual show.
Have the Draconids produced any notable outbursts in the modern era?
Smaller surges were logged in 1998, 2005, 2011, and 2012, each drawing attention from skywatchers but falling well short of the mid-century storms. The pattern of quiet years punctuated by sudden, intense activity is what makes the Draconids so unpredictable and exciting to track.
More in Meteor Showers 1-24
Spotted an error? Know more?
Reader corrections go straight into our review queue. Suggest an edit · How this site is sourced