IAU 339 · PSU
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.
2 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
- 2007/08
- Shower group
- 00000
- Peak solar longitude
- 252.9 °
- Radiant right ascension
- 167.8 °
- Radiant declination
- 44.5 °
- Right ascension drift
- 0.2 °/day
- Declination drift
- -0.01 °/day
- Geocentric speed
- 60.7 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
- 33
- Technique
- T
- Submitted on
- SD
- Reported parent body
- Not reported
Reference: 1) SonotaCo, 2009
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
- 253 °
- Radiant right ascension
- 169.8 °
- Radiant declination
- 42.4 °
- Right ascension drift
- 0.98 °/day
- Declination drift
- -0.39 °/day
- Geocentric speed
- 61.7 km/s
- Semimajor axis
- 9.13 AU
- Perihelion distance
- 0.928 AU
- Eccentricity
- 0.901
- Argument of perihelion
- 208.9 °
- Ascending node
- 253.8 °
- Inclination
- 119.4 °
- Observed members
- 18
- Technique
- T
- Submitted on
- SD
- Reported parent body
- Not reported
Reference: 2) Jenniskens et al., 2016, Icarus, 266, 331
Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)