IAU 121 · NHY
nu 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.
4 parameter sets returned for this shower. List-page filters do not hide sets here.
Parameter set 0
- MDC status code
- 0
- MDC status
- single shower, working list
- Activity
- annual
- Shower group
- 00000
- Peak solar longitude
- 343.1 °
- Radiant right ascension
- 159.1 °
- Radiant declination
- -12.2 °
- Right ascension drift
- Not reported
- Declination drift
- Not reported
- Geocentric speed
- 19.7 km/s
- Semimajor axis
- 1.622 AU
- Perihelion distance
- 0.626 AU
- Eccentricity
- Not reported
- Argument of perihelion
- 88.4 °
- Ascending node
- 163.1 °
- Inclination
- 12.5 °
- Observed members
- 2
- Technique
- Not reported
- Submitted on
- SD
- Reported parent body
- 1999 RM45?
Reference: 1) Jenniskens, 2006, p. 698
Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)
Parameter set 1
- MDC status code
- 0
- MDC status
- single shower, working list
- Activity
- annual
- Shower group
- 00000
- Peak solar longitude
- 4.6 °
- Radiant right ascension
- 158.6 °
- Radiant declination
- -11.3 °
- Right ascension drift
- Not reported
- Declination drift
- Not reported
- Geocentric speed
- 19.3 km/s
- Semimajor axis
- 2.521 AU
- Perihelion distance
- 0.718 AU
- Eccentricity
- 0.714
- Argument of perihelion
- 70.8 °
- Ascending node
- 184.6 °
- Inclination
- 9.6 °
- Observed members
- Not reported
- Technique
- P
- Submitted on
- SD
- Reported parent body
- 1999 RM45?
Reference: 2) Terentjeva, 1989 (Nr 18)
Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)
Parameter set 2
- MDC status code
- 0
- MDC status
- single shower, working list
- Activity
- 1968/69
- Shower group
- 00000
- Peak solar longitude
- 343.1 °
- Radiant right ascension
- 162 °
- Radiant declination
- 6.8 °
- Right ascension drift
- Not reported
- Declination drift
- Not reported
- Geocentric speed
- 20.9 km/s
- Semimajor axis
- 2.138 AU
- Perihelion distance
- 0.626 AU
- Eccentricity
- Not reported
- Argument of perihelion
- 84.7 °
- Ascending node
- 163 °
- Inclination
- 0.5 °
- Observed members
- 29
- Technique
- R
- Submitted on
- SD
- Reported parent body
- 1999 RM45?
Reference: 3) Sekanina, 1976
Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)
Parameter set 3
- MDC status code
- 0
- MDC status
- single shower, working list
- Activity
- annual
- Shower group
- 00000
- Peak solar longitude
- 358.7 °
- Radiant right ascension
- 159.6 °
- Radiant declination
- -5.3 °
- Right ascension drift
- Not reported
- Declination drift
- Not reported
- Geocentric speed
- 20.1 km/s
- Semimajor axis
- Not reported
- Perihelion distance
- 0.75 AU
- Eccentricity
- 0.91
- Argument of perihelion
- 62 °
- Ascending node
- 178.7 °
- Inclination
- 7.3 °
- Observed members
- 3
- Technique
- R
- Submitted on
- SD
- Reported parent body
- 1999 RM45?
Reference: 4) Gartrell and Elford, 1975 (Tab. 1, Id. 3.02)
Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)