2019 Visibility Forecast
64
Visibility Score
15.7
Expected /hr
54.7%
Moon Illum.
fair
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
2019 Dates
Activity StartOct 02
Activity EndNov 07
Peak DateOct 20
Moon PhaseWaxing Gibbous
Moon Condition
fair
Best Timepredawn
Characteristics
Fast Meteors
Variable Rates
Persistent Trains