IAU 40 · ZCY
zeta Cygnids
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.
3 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
- 20 °
- Radiant right ascension
- 303.8 °
- Radiant declination
- 44.8 °
- Right ascension drift
- Not reported
- Declination drift
- Not reported
- Geocentric speed
- 39 km/s
- Semimajor axis
- 3.863 AU
- Perihelion distance
- 0.898 AU
- Eccentricity
- Not reported
- Argument of perihelion
- 139.8 °
- Ascending node
- 19.2 °
- Inclination
- 66.4 °
- Observed members
- 30
- Technique
- R
- Submitted on
- SD
- Reported parent body
- Not reported
Reference: 1) Sekanina, 1976
Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)
Parameter set 1
- MDC status code
- 0
- MDC status
- single shower, working list
- Activity
- annual
- Shower group
- 00000
- Peak solar longitude
- 16 °
- Radiant right ascension
- 299 °
- Radiant declination
- 40.2 °
- Right ascension drift
- 0.5 °/day
- Declination drift
- 0.3 °/day
- Geocentric speed
- 43.6 km/s
- Semimajor axis
- Not reported
- Perihelion distance
- Not reported
- Eccentricity
- Not reported
- Argument of perihelion
- Not reported
- Ascending node
- Not reported
- Inclination
- Not reported
- Observed members
- 402
- Technique
- T
- Submitted on
- SD
- Reported parent body
- Not reported
Reference: 2) Molau and Rendtel, 2009
Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)
Parameter set 2
- MDC status code
- 0
- MDC status
- single shower, working list
- Activity
- annual
- Shower group
- 00000
- Peak solar longitude
- 32 °
- Radiant right ascension
- 309.5 °
- Radiant declination
- 42.5 °
- Right ascension drift
- 0.64 °/day
- Declination drift
- 0.26 °/day
- Geocentric speed
- 43 km/s
- Semimajor axis
- 3.93 AU
- Perihelion distance
- 0.9 AU
- Eccentricity
- 0.78
- Argument of perihelion
- 140.5 °
- Ascending node
- 31.5 °
- Inclination
- 74.9 °
- Observed members
- 64
- Technique
- T
- Submitted on
- SD
- Reported parent body
- Not reported
Reference: 3) Jenniskens et al., 2016, Icarus, 266, 331
Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)