2018 Visibility Forecast
55
Visibility Score
14.4
Expected /hr
85.4%
Moon Illum.
very_poor
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
2018 Dates
Activity StartOct 02
Activity EndNov 07
Peak DateOct 20
Moon PhaseWaning Gibbous
Moon Condition
very_poor
Best Timepredawn
Characteristics
Fast Meteors
Variable Rates
Persistent Trains