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IAU 430 · POR
September pi Orionids
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
- 178.424 °
- Radiant right ascension
- 74.885 °
- Radiant declination
- 8.439 °
- Right ascension drift
- Not reported
- Declination drift
- Not reported
- Geocentric speed
- 68 km/s
- Semimajor axis
- Not reported
- Perihelion distance
- 0.85392 AU
- Eccentricity
- 0.9314
- Argument of perihelion
- 46.273 °
- Ascending node
- 358.208 °
- Inclination
- 154.126 °
- Observed members
- 13
- Technique
- T
- Submitted on
- SD
- Reported parent body
- Unknown
Reference: 1) Greaves, 2012
Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)