IAU 175 · JPE
July Pegasids
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.
7 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
- 107.5 °
- Radiant right ascension
- 340 °
- Radiant declination
- 15 °
- Right ascension drift
- 0.6 °/day
- Declination drift
- 0.2 °/day
- Geocentric speed
- 61.3 km/s
- Semimajor axis
- 44 AU
- Perihelion distance
- 0.536 AU
- Eccentricity
- Not reported
- Argument of perihelion
- 267.2 °
- Ascending node
- 107.5 °
- Inclination
- 131.6 °
- Observed members
- Not reported
- Technique
- V
- Submitted on
- SD
- Reported parent body
- C/1979 Y1 (Bradfield)?
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
- 108 °
- Radiant right ascension
- 347.2 °
- Radiant declination
- 11.1 °
- Right ascension drift
- 0.9 °/day
- Declination drift
- 0.2 °/day
- Geocentric speed
- 68.1 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
- 591
- 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
- 1
- MDC status
- single established shower, group
- Activity
- 2008/11
- Shower group
- 00000
- Peak solar longitude
- 110.9 °
- Radiant right ascension
- 349.6 °
- Radiant declination
- 11.3 °
- Right ascension drift
- 0.71 °/day
- Declination drift
- 0.17 °/day
- Geocentric speed
- 63.9 km/s
- Semimajor axis
- 14.78 AU
- Perihelion distance
- 0.564 AU
- Eccentricity
- 0.962
- Argument of perihelion
- 264.73 °
- Ascending node
- 110.9 °
- Inclination
- 148.77 °
- Observed members
- 63
- Technique
- T
- Submitted on
- SD
- Reported parent body
- C/1979 Y1 (Bradfield, =1979X)
Reference: 3) Ueda, 2012
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
- 109 °
- Radiant right ascension
- 348.8 °
- Radiant declination
- 11.1 °
- Right ascension drift
- Not reported
- Declination drift
- Not reported
- Geocentric speed
- 64.5 km/s
- Semimajor axis
- Not reported
- Perihelion distance
- 0.598 AU
- Eccentricity
- 0.883
- Argument of perihelion
- 260.5 °
- Ascending node
- 109.1 °
- Inclination
- 149.3 °
- Observed members
- Not reported
- Technique
- T
- Submitted on
- SD
- Reported parent body
- C/1979 Y1 (Bradfield), C/1771 A1
Reference: 4) Holman and Jenniskens 2013
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
- 120.8 °
- Radiant right ascension
- 358.6 °
- Radiant declination
- 14.2 °
- Right ascension drift
- Not reported
- Declination drift
- Not reported
- Geocentric speed
- 62.6 km/s
- Semimajor axis
- Not reported
- Perihelion distance
- 0.524 AU
- Eccentricity
- 0.904
- Argument of perihelion
- 273.8 °
- Ascending node
- 120.8 °
- Inclination
- 150 °
- Observed members
- 8
- Technique
- T
- Submitted on
- SD
- Reported parent body
- C/1979 Y1 (Bradfield), C/1771 A1
Reference: 5) Rudawska and Jenniskens, 2014
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
- annual
- Shower group
- 00000
- Peak solar longitude
- 120.5 °
- Radiant right ascension
- 357.1 °
- Radiant declination
- 13.3 °
- Right ascension drift
- Not reported
- Declination drift
- Not reported
- Geocentric speed
- 62.31 km/s
- Semimajor axis
- Not reported
- Perihelion distance
- 0.484 AU
- Eccentricity
- 0.922
- Argument of perihelion
- 275.2 °
- Ascending node
- 120.5 °
- Inclination
- 149.4 °
- Observed members
- 12
- Technique
- T
- Submitted on
- SD
- Reported parent body
- C/1979 Y1 (Bradfield), C/1771 A1
Reference: 6) Kornos et al., 2014
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
- annual
- Shower group
- 00000
- Peak solar longitude
- 108 °
- Radiant right ascension
- 347.2 °
- Radiant declination
- 10 °
- Right ascension drift
- 0.9 °/day
- Declination drift
- 0.39 °/day
- Geocentric speed
- 64 km/s
- Semimajor axis
- 7.26 AU
- Perihelion distance
- 0.562 AU
- Eccentricity
- 0.96
- Argument of perihelion
- 265 °
- Ascending node
- 112.4 °
- Inclination
- 149.2 °
- Observed members
- 104
- Technique
- T
- Submitted on
- SD
- Reported parent body
- C/1979 Y1 (Bradfield), C/1771 A1
Reference: 7) Jenniskens et al., 2016, Icarus, 266, 331
Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)