2018 Visibility Forecast
40
Visibility Score
6.1
Expected /hr
98.9%
Moon Illum.
very_poor
53.8°
Best Alt.
at 01:00
Radiant Altitude & Hourly Rate (Peak Night)
คำอธิบาย
Often neglected as it peaks just before Christmas and after Geminids. 5-10/hr normally with occasional outbursts exceeding 25/hr. Northern hemisphere only.
History
Outbursts appear unrelated to 8P/Tuttle perihelion dates.
Radiant Position
Shower Properties
IAU CodeURS
ClassMinor Shower
ZHR10
Velocity33.0 km/s
Speed ClassMedium (30-50 km/s)
Pop. Index (r)3.0
Radiant RA217.0°
Radiant Dec+76.0°
Peak Sol. Lng.270.7°
Parent Body8P/Tuttle
Parent Typecomet
Best Hemispherenorthern
2018 Dates
Activity StartDec 17
Activity EndDec 26
Peak DateDec 21
Moon PhaseFull Moon
Moon Condition
very_poor
Best Timepredawn
Characteristics
Northern Only
Occasional Outbursts