IAU 539 · ACP

alpha Cepheids

Measurements from the IAU Meteor Data Center. Each parameter set describes an observation campaign; values and proposed parent bodies may differ between sets.

An activity peak is expressed as solar longitude, not a guaranteed calendar date or observing forecast. Radiant coordinates and orbital elements are reported as supplied by the source. Missing values are not reported; these data do not predict an hourly meteor rate.

1 parameter sets returned for this shower. List-page filters do not hide sets here.

Parameter set 0

MDC status code: 0
MDC status: single shower, working list
Activity: annual
Shower group: 00000
Peak solar longitude: 281 °
Radiant right ascension: 318 °
Radiant declination: 64 °
Right ascension drift: -0.45 °/day
Declination drift: -0.32 °/day
Geocentric speed: 15.9 km/s
Semimajor axis: Not reported
Perihelion distance: 0.979 AU
Eccentricity: 0.635
Argument of perihelion: 182 °
Ascending node: 281 °
Inclination: 22.9 °
Observed members: 41
Technique: T
Submitted on: SD
Reported parent body: 255P(Levy)

Reference: 1) Segon et al., 2014

Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)