IAU 145 · ELY
eta Lyrids
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.
5 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
- 49.1 °
- Radiant right ascension
- 292.5 °
- Radiant declination
- 39.7 °
- Right ascension drift
- Not reported
- Declination drift
- Not reported
- Geocentric speed
- 45.3 km/s
- Semimajor axis
- 6.03 AU
- Perihelion distance
- 0.995 AU
- Eccentricity
- Not reported
- Argument of perihelion
- 190 °
- Ascending node
- 45.7 °
- Inclination
- 79.4 °
- Observed members
- 12
- Technique
- Not reported
- Submitted on
- SD
- Reported parent body
- C/1983 H1 (IRAS-Araki-Alcock)
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
- 2007/08
- Shower group
- 00000
- Peak solar longitude
- 49.8 °
- Radiant right ascension
- 291.7 °
- Radiant declination
- 43.8 °
- Right ascension drift
- 0.2 °/day
- Declination drift
- 0.02 °/day
- Geocentric speed
- 44.3 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
- 14
- Technique
- T
- Submitted on
- SD
- Reported parent body
- C/1983 H1 (IRAS-Araki-Alcock)
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
- 50 °
- Radiant right ascension
- 291.1 °
- Radiant declination
- 43.2 °
- Right ascension drift
- 0.2 °/day
- Declination drift
- 0 °/day
- Geocentric speed
- 43.4 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
- 330
- Technique
- T
- Submitted on
- SD
- Reported parent body
- C/1983 H1 (IRAS-Araki-Alcock)
Reference: 3) Molau and Rendtel, 2009
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
- 2012
- Shower group
- 00000
- Peak solar longitude
- 50 °
- Radiant right ascension
- 291.3 °
- Radiant declination
- 43.4 °
- Right ascension drift
- 0.15 °/day
- Declination drift
- 0 °/day
- Geocentric speed
- 44 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
- 800
- Technique
- T
- Submitted on
- SD
- Reported parent body
- C/1983 H1 (IRAS-Araki-Alcock)
Reference: 4) Molau et al., 2013
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
- annual
- Shower group
- 00000
- Peak solar longitude
- 49 °
- Radiant right ascension
- 289.9 °
- Radiant declination
- 43.4 °
- Right ascension drift
- 0.56 °/day
- Declination drift
- 0.14 °/day
- Geocentric speed
- 43.7 km/s
- Semimajor axis
- 21.42 AU
- Perihelion distance
- 0.999 AU
- Eccentricity
- 0.954
- Argument of perihelion
- 192.3 °
- Ascending node
- 50.1 °
- Inclination
- 74.1 °
- Observed members
- 39
- Technique
- T
- Submitted on
- SD
- Reported parent body
- C/1983 H1 (IRAS-Araki-Alcock)
Reference: 5) Jenniskens et al., 2016, Icarus, 266, 331
Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)