2031 Visibility Forecast
73
Visibility Score
17.2
Expected /hr
22.6%
Moon Illum.
good
65.4°
Best Alt.
at 21:00
Radiant Altitude & Hourly Rate (Peak Night)
คำอธิบาย
Medium strength, sometimes reaching high activity (50-75/hr in 2006-2009). Swift with persistent trains.
History
Shares parent body (Halley's Comet) with eta Aquariids. Earth crosses Halley's outbound orbit.
Radiant Position
Shower Properties
IAU CodeORI
ClassMajor Shower
ZHR20
Velocity66.0 km/s
Speed ClassSwift (>50 km/s)
Pop. Index (r)2.5
Radiant RA95.0°
Radiant Dec+15.8°
Peak Sol. Lng.208.0°
Parent Body1P/Halley
Parent Typecomet
Best Hemisphereboth
2031 Dates
Activity StartOct 02
Activity EndNov 07
Peak DateOct 20
Moon PhaseWaxing Crescent
Moon Condition
good
Best Timepredawn
Characteristics
Fast Meteors
Variable Rates
Persistent Trains