IAU 55 · ASC

alpha Scorpiids

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.

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

Parameter set 0

MDC status code: -2
MDC status: shower removed from the MDC lists, but in the future, it can return to the database
Activity: annual
Shower group: 00000
Peak solar longitude: 55.2 °
Radiant right ascension: 247 °
Radiant declination: -28.8 °
Right ascension drift: 0.73 °/day
Declination drift: -0.07 °/day
Geocentric speed: 31 km/s
Semimajor axis: 2.64 AU
Perihelion distance: 0.33 AU
Eccentricity: Not reported
Argument of perihelion: 116.5 °
Ascending node: 236.8 °
Inclination: 9.8 °
Observed members: 3
Technique: P
Submitted on: SD
Reported parent body: 2004 BZ74?

Reference: 1) Porubcan and Gavajdova, 1994

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

Parameter set 1

MDC status code: -2
MDC status: shower removed from the MDC lists, but in the future, it can return to the database
Activity: annual
Shower group: 00000
Peak solar longitude: 55.2 °
Radiant right ascension: 240.7 °
Radiant declination: -22.1 °
Right ascension drift: 0.5 °/day
Declination drift: -0.19 °/day
Geocentric speed: 35 km/s
Semimajor axis: 2.15 AU
Perihelion distance: 0.21 AU
Eccentricity: Not reported
Argument of perihelion: 134 °
Ascending node: 222.7 °
Inclination: 3 °
Observed members: 5
Technique: Not reported
Submitted on: SD
Reported parent body: 2004 BZ74?

Reference: 2) Cook, 1973

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