IAU 1 · CAP
alpha Capricornids
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.
9 parameter sets returned for this shower. List-page filters do not hide sets here.
Parameter set 0
- MDC status code
- 1
- MDC status
- single established shower, group
- Activity
- annual
- Shower group
- 00000
- Peak solar longitude
- 128.9 °
- Radiant right ascension
- 306.6 °
- Radiant declination
- -8.2 °
- Right ascension drift
- 0.54 °/day
- Declination drift
- 0.26 °/day
- Geocentric speed
- 22.2 km/s
- Semimajor axis
- 2.618 AU
- Perihelion distance
- 0.602 AU
- Eccentricity
- Not reported
- Argument of perihelion
- 266.67 °
- Ascending node
- 128.9 °
- Inclination
- 7.68 °
- Observed members
- 36
- Technique
- Not reported
- Submitted on
- SD
- Reported parent body
- 169P/NEAT (= 2002 EX12)
Reference: 1) Jenniskens, 2006
Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)
Parameter set 1
- MDC status code
- 1
- MDC status
- single established shower, group
- Activity
- annual
- Shower group
- 00000
- Peak solar longitude
- 122.3 °
- Radiant right ascension
- 306.7 °
- Radiant declination
- -9.3 °
- Right ascension drift
- 0.91 °/day
- Declination drift
- 0.25 °/day
- Geocentric speed
- 23.4 km/s
- Semimajor axis
- Not reported
- Perihelion distance
- 0.55 AU
- Eccentricity
- 0.768
- Argument of perihelion
- 273.3 °
- Ascending node
- 122.3 °
- Inclination
- 7.7 °
- Observed members
- 269
- Technique
- R
- Submitted on
- SD
- Reported parent body
- 169P/NEAT (= 2002 EX12)
Reference: 2) Galligan and Baggaley, 2002
Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)
Parameter set 2
- MDC status code
- 1
- MDC status
- single established shower, group
- Activity
- annual
- Shower group
- 00000
- Peak solar longitude
- 123.8 °
- Radiant right ascension
- 303.4 °
- Radiant declination
- -10.6 °
- Right ascension drift
- 0.75 °/day
- Declination drift
- 0.28 °/day
- Geocentric speed
- 22.2 km/s
- Semimajor axis
- 2.54 AU
- Perihelion distance
- 0.594 AU
- Eccentricity
- Not reported
- Argument of perihelion
- 267.6 °
- Ascending node
- 123.8 °
- Inclination
- 7.2 °
- Observed members
- Not reported
- Technique
- P
- Submitted on
- SD
- Reported parent body
- 169P/NEAT (= 2002 EX12)
Reference: 3) Hasegawa, 2001
Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)
Parameter set 3
- MDC status code
- 1
- MDC status
- single established shower, group
- Activity
- annual
- Shower group
- 00000
- Peak solar longitude
- 129 °
- Radiant right ascension
- 308.4 °
- Radiant declination
- -9.6 °
- Right ascension drift
- 0.9 °/day
- Declination drift
- 0.3 °/day
- Geocentric speed
- 22.8 km/s
- Semimajor axis
- 2.53 AU
- Perihelion distance
- 0.59 AU
- Eccentricity
- 0.77
- Argument of perihelion
- 269 °
- Ascending node
- 127.7 °
- Inclination
- 7 °
- Observed members
- 21
- Technique
- Not reported
- Submitted on
- SD
- Reported parent body
- 169P/NEAT (= 2002 EX12)
Reference: 4) Cook, 1973
Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)
Parameter set 4
- MDC status code
- 1
- MDC status
- single established shower, group
- Activity
- annual
- Shower group
- 00000
- Peak solar longitude
- 127.9 °
- Radiant right ascension
- 307.1 °
- Radiant declination
- -8.9 °
- Right ascension drift
- Not reported
- Declination drift
- Not reported
- Geocentric speed
- 22.6 km/s
- Semimajor axis
- Not reported
- Perihelion distance
- 0.586 AU
- Eccentricity
- 0.77
- Argument of perihelion
- 268.4 °
- Ascending node
- 127.9 °
- Inclination
- 7.4 °
- Observed members
- 22
- Technique
- P
- Submitted on
- SD
- Reported parent body
- Not reported
Reference: 5) Jopek et al., 2003
Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)
Parameter set 5
- MDC status code
- 1
- MDC status
- single established shower, group
- Activity
- 2002/06
- Shower group
- 00000
- Peak solar longitude
- 123.5 °
- Radiant right ascension
- 302.9 °
- Radiant declination
- -9.9 °
- Right ascension drift
- 0.66 °/day
- Declination drift
- 0.28 °/day
- Geocentric speed
- 22.2 km/s
- Semimajor axis
- 2.35 AU
- Perihelion distance
- 0.586 AU
- Eccentricity
- 0.75
- Argument of perihelion
- 269.2 °
- Ascending node
- 123.3 °
- Inclination
- 7.3 °
- Observed members
- 145
- Technique
- R
- Submitted on
- SD
- Reported parent body
- Not reported
Reference: 6) Brown et al., 2008
Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)
Parameter set 6
- MDC status code
- 1
- MDC status
- single established shower, group
- Activity
- 2007/08
- Shower group
- 00000
- Peak solar longitude
- 126.1 °
- Radiant right ascension
- 305.7 °
- Radiant declination
- -9.4 °
- Right ascension drift
- 0.5 °/day
- Declination drift
- 0.26 °/day
- Geocentric speed
- 22.4 km/s
- Semimajor axis
- Not reported
- Perihelion distance
- 0.586 AU
- Eccentricity
- 0.77
- Argument of perihelion
- 268.4 °
- Ascending node
- 127.9 °
- Inclination
- 7.4 °
- Observed members
- 122
- Technique
- T
- Submitted on
- SD
- Reported parent body
- Not reported
Reference: 7) SonotaCo, 2009
Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)
Parameter set 7
- MDC status code
- 1
- MDC status
- single established shower, group
- Activity
- annual
- Shower group
- 00000
- Peak solar longitude
- 125 °
- Radiant right ascension
- 305.1 °
- Radiant declination
- -10.2 °
- Right ascension drift
- 0.57 °/day
- Declination drift
- 0.27 °/day
- Geocentric speed
- 23.7 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
- 2,282
- Technique
- T
- Submitted on
- SD
- Reported parent body
- 169P/NEAT (= 2002 EX12)
Reference: 8) Molau and Rendtel, 2009
Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)
Parameter set 8
- MDC status code
- 1
- MDC status
- single established shower, group
- Activity
- annual
- Shower group
- 00000
- Peak solar longitude
- 127 °
- Radiant right ascension
- 306.5 °
- Radiant declination
- -9.2 °
- Right ascension drift
- 0.97 °/day
- Declination drift
- 0.24 °/day
- Geocentric speed
- 23 km/s
- Semimajor axis
- 2.54 AU
- Perihelion distance
- 0.578 AU
- Eccentricity
- 0.774
- Argument of perihelion
- 268.9 °
- Ascending node
- 125.4 °
- Inclination
- 7.5 °
- Observed members
- 646
- Technique
- T
- Submitted on
- SD
- Reported parent body
- 169P/NEAT
Reference: 9) Jenniskens et al., 2016, Icarus, 266, 331
Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)