IAU 497 · DAB
December alpha Bootids
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
- 263.9 °
- Radiant right ascension
- 213.5 °
- Radiant declination
- 22.3 °
- Right ascension drift
- Not reported
- Declination drift
- Not reported
- Geocentric speed
- 59.5 km/s
- Semimajor axis
- Not reported
- Perihelion distance
- 0.686 AU
- Eccentricity
- 1.002
- Argument of perihelion
- 113.3 °
- Ascending node
- 263.9 °
- Inclination
- 112.3 °
- Observed members
- 7
- Technique
- T
- Submitted on
- SD
- Reported parent body
- Not reported
Reference: 1) Rudawska and Jenniskens, 2014
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
- 261.8 °
- Radiant right ascension
- 210.6 °
- Radiant declination
- 22.9 °
- Right ascension drift
- Not reported
- Declination drift
- Not reported
- Geocentric speed
- 59.47 km/s
- Semimajor axis
- Not reported
- Perihelion distance
- 0.69 AU
- Eccentricity
- 0.967
- Argument of perihelion
- 113.1 °
- Ascending node
- 261.8 °
- Inclination
- 113.6 °
- Observed members
- 5
- Technique
- T
- Submitted on
- SD
- Reported parent body
- Not reported
Reference: 2) Kornos et al., 2014
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
- 264 °
- Radiant right ascension
- 213 °
- Radiant declination
- 21.9 °
- Right ascension drift
- 0.83 °/day
- Declination drift
- -0.33 °/day
- Geocentric speed
- 59.8 km/s
- Semimajor axis
- 62.1 AU
- Perihelion distance
- 0.683 AU
- Eccentricity
- 0.989
- Argument of perihelion
- 113.2 °
- Ascending node
- 264.3 °
- Inclination
- 113.5 °
- Observed members
- 8
- Technique
- T
- Submitted on
- SD
- Reported parent body
- Not reported
Reference: 3) Jenniskens and Nenon, 2016, Icarus, 266, 371
Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)