IAU 191 · ERI
eta Eridanids
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
- 1
- MDC status
- single established shower, group
- Activity
- annual
- Shower group
- 00000
- Peak solar longitude
- 137.5 °
- Radiant right ascension
- 45 °
- Radiant declination
- -12.9 °
- Right ascension drift
- Not reported
- Declination drift
- Not reported
- Geocentric speed
- 64 km/s
- Semimajor axis
- 20.26 AU
- Perihelion distance
- 0.961 AU
- Eccentricity
- Not reported
- Argument of perihelion
- 26.6 °
- Ascending node
- 317.49 °
- Inclination
- 130.4 °
- Observed members
- Not reported
- Technique
- VPTR
- Submitted on
- SD
- Reported parent body
- C/1852 K1 (Chacornac)?
Reference: 1) Ohtsuka et al., 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
- 2007/08
- Shower group
- 00000
- Peak solar longitude
- 137.6 °
- Radiant right ascension
- 44.5 °
- Radiant declination
- -11.7 °
- Right ascension drift
- 0.49 °/day
- Declination drift
- 0.03 °/day
- Geocentric speed
- 64 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
- 86
- Technique
- T
- Submitted on
- SD
- Reported parent body
- C/1852 K1 (Chacornac)?
Reference: 2) SonotaCo, 2009
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
- 00000
- Peak solar longitude
- 137 °
- Radiant right ascension
- 43.7 °
- Radiant declination
- -11.9 °
- Right ascension drift
- 0.86 °/day
- Declination drift
- 0.29 °/day
- Geocentric speed
- 64.5 km/s
- Semimajor axis
- 10.33 AU
- Perihelion distance
- 0.953 AU
- Eccentricity
- 0.945
- Argument of perihelion
- 28.4 °
- Ascending node
- 317.7 °
- Inclination
- 132.7 °
- Observed members
- 214
- Technique
- T
- Submitted on
- SD
- Reported parent body
- C/1852 K1 (Chacornac)?
Reference: 3) Jenniskens et al., 2016, Icarus, 266, 331
Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)