IAU 529 · EHY
eta Hydrids
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
- 256.9 °
- Radiant right ascension
- 132.9 °
- Radiant declination
- 2.3 °
- Right ascension drift
- 0.79 °/day
- Declination drift
- -0.16 °/day
- Geocentric speed
- 62.5 km/s
- Semimajor axis
- 15 AU
- Perihelion distance
- 0.383 AU
- Eccentricity
- 0.974
- Argument of perihelion
- 103.8 °
- Ascending node
- 76.9 °
- Inclination
- 142.8 °
- Observed members
- 120
- Technique
- T
- Submitted on
- SD
- Reported parent body
- Not reported
Reference: 1) Segon et al., 2013
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
- 258.2 °
- Radiant right ascension
- 134.1 °
- Radiant declination
- 2.4 °
- Right ascension drift
- Not reported
- Declination drift
- Not reported
- Geocentric speed
- 61.72 km/s
- Semimajor axis
- Not reported
- Perihelion distance
- 0.362 AU
- Eccentricity
- 0.951
- Argument of perihelion
- 107.4 °
- Ascending node
- 78.2 °
- Inclination
- 143 °
- Observed members
- 18
- 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
- 1
- MDC status
- single established shower, group
- Activity
- annual
- Shower group
- 00000
- Peak solar longitude
- 257 °
- Radiant right ascension
- 132.3 °
- Radiant declination
- 2.5 °
- Right ascension drift
- 0.93 °/day
- Declination drift
- -0.27 °/day
- Geocentric speed
- 62.4 km/s
- Semimajor axis
- 9.98 AU
- Perihelion distance
- 0.362 AU
- Eccentricity
- 0.981
- Argument of perihelion
- 106.1 °
- Ascending node
- 78.4 °
- Inclination
- 142.2 °
- Observed members
- 83
- Technique
- T
- Submitted on
- SD
- Reported parent body
- Not reported
Reference: 3) Jenniskens et al., 2016, Icarus, 266, 355
Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)