IAU 19 · MON
December Monocerotids
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
- 260.9 °
- Radiant right ascension
- 101.8 °
- Radiant declination
- 8.1 °
- Right ascension drift
- 0.83 °/day
- Declination drift
- -0.05 °/day
- Geocentric speed
- 42 km/s
- Semimajor axis
- 50.7 AU
- Perihelion distance
- 0.193 AU
- Eccentricity
- Not reported
- Argument of perihelion
- 128.1 °
- Ascending node
- 80.2 °
- Inclination
- 35.2 °
- Observed members
- 11
- Technique
- Not reported
- Submitted on
- SD
- Reported parent body
- C/1917 F1 (Mellish)
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
- 261.2 °
- Radiant right ascension
- 103.3 °
- Radiant declination
- 8 °
- Right ascension drift
- Not reported
- Declination drift
- Not reported
- Geocentric speed
- 42.5 km/s
- Semimajor axis
- Not reported
- Perihelion distance
- 0.182 AU
- Eccentricity
- 0.998
- Argument of perihelion
- 129.3 °
- Ascending node
- 81.2 °
- Inclination
- 36.8 °
- Observed members
- 3
- Technique
- P
- Submitted on
- SD
- Reported parent body
- C/1917 F1 (Mellish)
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
- 102.6 °
- Radiant declination
- 8.1 °
- Right ascension drift
- 0.63 °/day
- Declination drift
- -0.11 °/day
- Geocentric speed
- 41.5 km/s
- Semimajor axis
- 22.3 AU
- Perihelion distance
- 0.194 AU
- Eccentricity
- 0.9913
- Argument of perihelion
- 127.9 °
- Ascending node
- 81.3 °
- Inclination
- 34.4 °
- Observed members
- 138
- Technique
- R
- Submitted on
- SD
- Reported parent body
- C/1917 F1 (Mellish)
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
- 257.6 °
- Radiant right ascension
- 100.1 °
- Radiant declination
- 8.2 °
- Right ascension drift
- 0.52 °/day
- Declination drift
- -0.11 °/day
- Geocentric speed
- 41.2 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
- 161
- Technique
- T
- Submitted on
- SD
- Reported parent body
- C/1917 F1 (Mellish)
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
- 102.3 °
- Radiant declination
- 8.6 °
- Right ascension drift
- 0.69 °/day
- Declination drift
- -0.24 °/day
- Geocentric speed
- 40.6 km/s
- Semimajor axis
- 8.88 AU
- Perihelion distance
- 0.1936 AU
- Eccentricity
- 0.978
- Argument of perihelion
- 128.65 °
- Ascending node
- 81 °
- Inclination
- 32.4 °
- Observed members
- 1,598
- Technique
- R
- Submitted on
- SD
- Reported parent body
- C/1917 F1 (Mellish)
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
- 261 °
- Radiant right ascension
- 102.9 °
- Radiant declination
- 7.8 °
- Right ascension drift
- 0.97 °/day
- Declination drift
- -0.09 °/day
- Geocentric speed
- 41.4 km/s
- Semimajor axis
- 8.2 AU
- Perihelion distance
- 0.191 AU
- Eccentricity
- 0.983
- Argument of perihelion
- 128.7 °
- Ascending node
- 78.5 °
- Inclination
- 35.2 °
- Observed members
- 240
- Technique
- T
- Submitted on
- SD
- Reported parent body
- C/1917 F1 (Mellish)
Reference: 6) Jenniskens et al., 2016, Icarus, 266, 331
Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)