What Is The Geminid Meteor Shower?
QUICK ANSWER
The Geminid meteor shower peaks December 13-14 each year with up to 120 meteors per hour, the highest rate of any annual shower. Uniquely among major showers, its parent body is asteroid 3200 Phaethon rather than a comet. Geminids are known for their bright, slow, colorful meteors.
The Geminids are arguably the year's best meteor shower, peaking in mid-December with up to 120 meteors per hour. They're unusual: most meteor showers come from comets, but the Geminids come from an asteroid called 3200 Phaethon. The Geminids produce slow, bright, multicolored meteors and are visible from both hemispheres. The main drawback is the December timing, which means watching in cold weather.
When do the Geminids peak?
December 13-14 each year. According to NASA, the Geminids are active from early December through about December 17, with peak rates on the night of December 13-14. Unlike most showers, the Geminids are visible from both hemispheres, though they're slightly better from the Northern Hemisphere. The peak typically lasts about 24 hours, longer than most showers. Best viewing is from about 9 PM until dawn local time, with peak activity around 2 AM. Cold weather is the main challenge for observers.
Where do they come from?
Asteroid 3200 Phaethon, not a comet. The Geminids are unusual among major meteor showers because their parent body is an asteroid (3200 Phaethon) rather than a comet. Most meteor showers come from comet debris, since comets shed dust and ice as they pass near the Sun. Phaethon is a rocky asteroid about 3.2 miles across that approaches the Sun closer than any other named asteroid, getting heated enough to shed material in ways more typical of comets. Scientists debate whether Phaethon is an extinct comet or a true asteroid with comet-like behavior.
What makes them special?
High meteor rates and colorful meteors. The Geminids peak at about 120 meteors per hour under ideal dark sky conditions, the highest rate of any annual shower. The meteors are slower than other showers (about 22 miles per second versus 38 for Perseids), giving viewers more time to enjoy each one. Geminid meteors are known for their colors, appearing white, yellow, green, red, or blue depending on the trace elements vaporizing in the atmosphere. They're also bright, making them visible even from suburban areas with some light pollution.
How do you watch them?
Find dark skies and bundle up warm. The cold winter weather is the main practical challenge. Dress in many layers, including good insulation against the ground if you'll be lying down. Find a dark sky location away from city lights. Look toward Gemini (the radiant), but Geminids can appear anywhere. Allow 20-30 minutes for eye adaptation and avoid phone screens. Hot drinks and a sleeping bag help. No telescope needed. Patience and warmth are the main requirements.
The Geminid meteor shower peaks December 13-14 each year with up to 120 meteors per hour, the highest rate of any annual shower. Its parent body is uniquely an asteroid (3200 Phaethon) rather than a comet. The Geminids are known for bright, slow, colorful meteors visible from both hemispheres. Cold weather is the main challenge for observers, but the high meteor rates and quality of the show make the effort worthwhile.
More Space Basics Questions
Mystery Question?
Mystery Question?
Mystery Question?