IAU 133 · PUM
April psi Ursae Majorids
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.
4 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
- 22.2 °
- Radiant right ascension
- 188.6 °
- Radiant declination
- 58.7 °
- Right ascension drift
- Not reported
- Declination drift
- Not reported
- Geocentric speed
- 10 km/s
- Semimajor axis
- 1.805 AU
- Perihelion distance
- 0.984 AU
- Eccentricity
- Not reported
- Argument of perihelion
- 203 °
- Ascending node
- 22.2 °
- Inclination
- 14 °
- Observed members
- Not reported
- Technique
- P
- Submitted on
- SD
- Reported parent body
- Not reported
Reference: 1) Lindblad, 1971b
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
- 27.1 °
- Radiant right ascension
- 117 °
- Radiant declination
- 52.9 °
- Right ascension drift
- Not reported
- Declination drift
- Not reported
- Geocentric speed
- 8.4 km/s
- Semimajor axis
- 2.29 AU
- Perihelion distance
- 1.002 AU
- Eccentricity
- Not reported
- Argument of perihelion
- 174.6 °
- Ascending node
- 27.1 °
- Inclination
- 6.8 °
- Observed members
- Not reported
- Technique
- P
- Submitted on
- SD
- Reported parent body
- Not reported
Reference: 2) Terentjeva, 1989 (Nr 25)
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
- 1968/69
- Shower group
- 00000
- Peak solar longitude
- 28.9 °
- Radiant right ascension
- 153.2 °
- Radiant declination
- 58.6 °
- Right ascension drift
- Not reported
- Declination drift
- Not reported
- Geocentric speed
- 8.6 km/s
- Semimajor axis
- 1.865 AU
- Perihelion distance
- 0.993 AU
- Eccentricity
- Not reported
- Argument of perihelion
- 183.5 °
- Ascending node
- 28.9 °
- Inclination
- 9.4 °
- Observed members
- 21
- Technique
- R
- Submitted on
- SD
- Reported parent body
- Not reported
Reference: 3) Sekanina, 1976
Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)
Parameter set 3
- MDC status code
- 0
- MDC status
- single shower, working list
- Activity
- annual
- Shower group
- 00000
- Peak solar longitude
- 27.3 °
- Radiant right ascension
- 157.8 °
- Radiant declination
- 55.7 °
- Right ascension drift
- Not reported
- Declination drift
- Not reported
- Geocentric speed
- 10.6 km/s
- Semimajor axis
- 2.67 AU
- Perihelion distance
- 0.909 AU
- Eccentricity
- Not reported
- Argument of perihelion
- 187.1 °
- Ascending node
- 27.3 °
- Inclination
- 11 °
- Observed members
- 2
- Technique
- P
- Submitted on
- SD
- Reported parent body
- Not reported
Reference: 4) Whipple, 1957
Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)