Leonids Meteor Shower Offers Mid November Peak and Favorable Moon

Silhouette of mountain peak at nighttime (Photo by Phil Botha on Unsplash )

Silhouette of mountain peak at nighttime (Photo by Phil Botha on Unsplash)

Summary
  • Leonids active from early to late November with a mid November peak
  • Predicted peak night carries a 45% illuminated Moon
  • Radiant at 10:08 +21.8 and velocity about 43.5 miles per second
  • Zenithal hourly rate forecast near 15, modest storm risk this cycle

The Leonids meteor shower will be active from early to late November, with a clear peak forecast in mid November, according to the Meteor Shower Calendar. Observers can expect the shower to produce a baseline zenithal hourly rate of 15, with meteors striking the atmosphere at about 43.5 miles per second. The radiant is given as 10:08 right ascension and +21.8 degrees declination. Those details frame viewing expectations for the best hours around the predicted peak night.

Moonlight will be a factor but not a complete hindrance. On the night of the predicted peak the Moon is reported to be about 45 percent illuminated, while earlier in the month it reaches first quarter and should not spoil prime viewing hours. The calendar notes that conditions this season will favour casual viewing rather than an exceptional storm, so observers should plan for steady but moderate rates and check local sky conditions for the best view.

Comet Heritage, Historical Storms And Future Prospects

The Leonids trace their origin to comet 55P/Tempel-Tuttle, as the Meteor Shower Calendar explains. The shower is famous for dramatic storms in 1833, 1866, 1966, 1999, 2001 and 2002, episodes that resulted from dense streams of debris left by the comet. The calendar emphasises that outbursts are linked to the comet's proximity to perihelion, but it is older debris from prior returns that usually produces the most intense displays.

Forecasts cited by the calendar indicate no encounter with exceptionally dense debris clouds until 2099, even though the comet will return on later passages. The calendar suggests that the comet's upcoming returns may not produce storms but could yield displays exceeding 100 meteors per hour in favourable circumstances. Each passing year can still present surprises as the Earth moves through older debris fields, so amateur and professional observers are advised to monitor updates ahead of each season.