IAU 4 · GEM
Geminids
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.
6 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
- 262.1 °
- Radiant right ascension
- 113.2 °
- Radiant declination
- 32.5 °
- Right ascension drift
- 1.02 °/day
- Declination drift
- -0.15 °/day
- Geocentric speed
- 34.58 km/s
- Semimajor axis
- 1.372 AU
- Perihelion distance
- 0.141 AU
- Eccentricity
- Not reported
- Argument of perihelion
- 324.42 °
- Ascending node
- 261.49 °
- Inclination
- 24.02 °
- Observed members
- 221
- Technique
- P
- Submitted on
- SD
- Reported parent body
- 3200 Phaethon (=1983 TB)
Reference: 1) Dutch Meteor Society 2001
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
- 261.6 °
- Radiant right ascension
- 112.9 °
- Radiant declination
- 32.3 °
- Right ascension drift
- Not reported
- Declination drift
- Not reported
- Geocentric speed
- 34.6 km/s
- Semimajor axis
- Not reported
- Perihelion distance
- 0.141 AU
- Eccentricity
- 0.898
- Argument of perihelion
- 324.2 °
- Ascending node
- 261.6 °
- Inclination
- 23.5 °
- Observed members
- 51
- Technique
- P
- Submitted on
- SD
- Reported parent body
- 3200 Phaethon (=1983 TB)
Reference: 2) Jopek et al., 2003
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
- 2002/06
- Shower group
- 00000
- Peak solar longitude
- 261.5 °
- Radiant right ascension
- 112.8 °
- Radiant declination
- 32.1 °
- Right ascension drift
- 1.1 °/day
- Declination drift
- -0.17 °/day
- Geocentric speed
- 35 km/s
- Semimajor axis
- 1.416 AU
- Perihelion distance
- 0.136 AU
- Eccentricity
- 0.904
- Argument of perihelion
- 324.6 °
- Ascending node
- 261.3 °
- Inclination
- 24 °
- Observed members
- 4,384
- Technique
- R
- Submitted on
- SD
- Reported parent body
- 3200 Phaethon (=1983 TB)
Reference: 3) Brown et al., 2008
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
- 2007/08
- Shower group
- 00000
- Peak solar longitude
- 261.4 °
- Radiant right ascension
- 112.8 °
- Radiant declination
- 32.3 °
- Right ascension drift
- 0.9 °/day
- Declination drift
- -0.19 °/day
- Geocentric speed
- 33.5 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
- 2,510
- Technique
- T
- Submitted on
- SD
- Reported parent body
- 3200 Phaethon (=1983 TB)
Reference: 4) SonotaCo, 2009
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
- 2002/08
- Shower group
- 00000
- Peak solar longitude
- 261 °
- Radiant right ascension
- 112.5 °
- Radiant declination
- 32.1 °
- Right ascension drift
- 1.12 °/day
- Declination drift
- -0.17 °/day
- Geocentric speed
- 34.5 km/s
- Semimajor axis
- 1.35 AU
- Perihelion distance
- 0.1373 AU
- Eccentricity
- 0.898
- Argument of perihelion
- 324.95 °
- Ascending node
- 261 °
- Inclination
- 23.2 °
- Observed members
- 9,999
- Technique
- R
- Submitted on
- SD
- Reported parent body
- 3200 Phaethon (=1983 TB)
Reference: 5) Brown et al., 2010
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
- 262 °
- Radiant right ascension
- 113.5 °
- Radiant declination
- 32.3 °
- Right ascension drift
- 1.15 °/day
- Declination drift
- -0.16 °/day
- Geocentric speed
- 33.8 km/s
- Semimajor axis
- 1.31 AU
- Perihelion distance
- 0.145 AU
- Eccentricity
- 0.889
- Argument of perihelion
- 324.3 °
- Ascending node
- 261.7 °
- Inclination
- 22.9 °
- Observed members
- 4,895
- Technique
- T
- Submitted on
- SD
- Reported parent body
- (3200) Phaethon
Reference: 6) Jenniskens et al., 2016, Icarus, 266, 331
Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)