IAU 257 · ORS
Southern chi Orionids
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
- 1
- MDC status
- single established shower, group
- Activity
- annual
- Shower group
- 00014
- Peak solar longitude
- 260 °
- Radiant right ascension
- 78.7 °
- Radiant declination
- 15.7 °
- Right ascension drift
- 0.88 °/day
- Declination drift
- -0.03 °/day
- Geocentric speed
- 21.5 km/s
- Semimajor axis
- 2.23 AU
- Perihelion distance
- 0.594 AU
- Eccentricity
- Not reported
- Argument of perihelion
- 86.4 °
- Ascending node
- 80.1 °
- Inclination
- 5.2 °
- Observed members
- 12
- Technique
- Not reported
- Submitted on
- SD
- Reported parent body
- Not reported
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
- 00014
- Peak solar longitude
- 260 °
- Radiant right ascension
- 80.7 °
- Radiant declination
- 16.8 °
- Right ascension drift
- 1.3 °/day
- Declination drift
- Not reported
- Geocentric speed
- 21.5 km/s
- Semimajor axis
- 1.85 AU
- Perihelion distance
- 0.56 AU
- Eccentricity
- Not reported
- Argument of perihelion
- 93.7 °
- Ascending node
- 79.3 °
- Inclination
- 4.6 °
- Observed members
- 4
- Technique
- R
- Submitted on
- SD
- Reported parent body
- Not reported
Reference: 2) Nilsson, 1964
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
- annual
- Shower group
- 00014
- Peak solar longitude
- 257.9 °
- Radiant right ascension
- 80.9 °
- Radiant declination
- 17.6 °
- Right ascension drift
- Not reported
- Declination drift
- Not reported
- Geocentric speed
- 24.6 km/s
- Semimajor axis
- Not reported
- Perihelion distance
- 0.507 AU
- Eccentricity
- 0.79
- Argument of perihelion
- 95.6 °
- Ascending node
- 77.9 °
- Inclination
- 4.5 °
- Observed members
- 7
- Technique
- P
- Submitted on
- SD
- Reported parent body
- 2002 XM35?
Reference: 3) Jopek et al., 2003
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
- annual
- Shower group
- 00014
- Peak solar longitude
- 243 °
- Radiant right ascension
- 73 °
- Radiant declination
- 17.8 °
- Right ascension drift
- 1.04 °/day
- Declination drift
- 0.11 °/day
- Geocentric speed
- 27.9 km/s
- Semimajor axis
- 2.16 AU
- Perihelion distance
- 0.381 AU
- Eccentricity
- 0.828
- Argument of perihelion
- 111.3 °
- Ascending node
- 64.3 °
- Inclination
- 5.3 °
- Observed members
- 97
- Technique
- T
- Submitted on
- SD
- Reported parent body
- 2010 LU108,2002 XM35?
Reference: 4) Jenniskens et al., 2016, Icarus, 266, 331
Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)