IAU 15 · URS
Ursids
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
- 271 °
- Radiant right ascension
- 219.35 °
- Radiant declination
- 75.34 °
- Right ascension drift
- Not reported
- Declination drift
- Not reported
- Geocentric speed
- 33 km/s
- Semimajor axis
- 4.62 AU
- Perihelion distance
- 0.944 AU
- Eccentricity
- Not reported
- Argument of perihelion
- 204.9 °
- Ascending node
- 270.74 °
- Inclination
- 51.5 °
- Observed members
- 64
- Technique
- Not reported
- Submitted on
- SD
- Reported parent body
- 8P/Tuttle
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
- 2002/06
- Shower group
- 00000
- Peak solar longitude
- 270.5 °
- Radiant right ascension
- 222 °
- Radiant declination
- 74.6 °
- Right ascension drift
- Not reported
- Declination drift
- Not reported
- Geocentric speed
- 37.6 km/s
- Semimajor axis
- -10.3 AU
- Perihelion distance
- 0.948 AU
- Eccentricity
- 1.09
- Argument of perihelion
- 201.6 °
- Ascending node
- 270.8 °
- Inclination
- 57.3 °
- Observed members
- 71
- Technique
- R
- Submitted on
- SD
- Reported parent body
- 8P/Tuttle
Reference: 2) Brown et al., 2008
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
- 2007/08
- Shower group
- 00000
- Peak solar longitude
- 265.5 °
- Radiant right ascension
- 215.1 °
- Radiant declination
- 76.2 °
- Right ascension drift
- 0.94 °/day
- Declination drift
- 0.04 °/day
- Geocentric speed
- 33.2 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
- 28
- Technique
- T
- Submitted on
- SD
- Reported parent body
- 8P/Tuttle
Reference: 3) SonotaCo, 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
- 2002/08
- Shower group
- 00000
- Peak solar longitude
- 270.5 °
- Radiant right ascension
- 222.1 °
- Radiant declination
- 74.8 °
- Right ascension drift
- 1.77 °/day
- Declination drift
- -0.05 °/day
- Geocentric speed
- 35.6 km/s
- Semimajor axis
- 24.11 AU
- Perihelion distance
- 0.947 AU
- Eccentricity
- 0.961
- Argument of perihelion
- 202.53 °
- Ascending node
- 270 °
- Inclination
- 55.5 °
- Observed members
- 1,021
- Technique
- R
- Submitted on
- SD
- Reported parent body
- 8P/Tuttle
Reference: 4) Brown et al., 2010
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
- 271 °
- Radiant right ascension
- 219.9 °
- Radiant declination
- 75.4 °
- Right ascension drift
- 0.05 °/day
- Declination drift
- -0.31 °/day
- Geocentric speed
- 32.9 km/s
- Semimajor axis
- 4.87 AU
- Perihelion distance
- 0.94 AU
- Eccentricity
- 0.807
- Argument of perihelion
- 205.6 °
- Ascending node
- 270.1 °
- Inclination
- 52.6 °
- Observed members
- 62
- Technique
- T
- Submitted on
- SD
- Reported parent body
- 8P/Tuttle
Reference: 5) Jenniskens et al., 2016, Icarus, 266, 331
Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)