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IAU 112 · NDL

Northern delta Leonids

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
0
MDC status
single shower, working list
Activity
annual
Shower group
00029
Peak solar longitude
334.7 °
Radiant right ascension
168 °
Radiant declination
16 °
Right ascension drift
Not reported
Declination drift
Not reported
Geocentric speed
20.1 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
Not reported
Technique
Not reported
Submitted on
SD
Reported parent body
1999 RD32?

Reference: 1) ?

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
1961/65
Shower group
00029
Peak solar longitude
331.4 °
Radiant right ascension
155.1 °
Radiant declination
17.9 °
Right ascension drift
Not reported
Declination drift
Not reported
Geocentric speed
20.6 km/s
Semimajor axis
1.954 AU
Perihelion distance
0.612 AU
Eccentricity
Not reported
Argument of perihelion
266.4 °
Ascending node
331.4 °
Inclination
4.8 °
Observed members
8
Technique
R
Submitted on
SD
Reported parent body
1999 RD32?

Reference: 2) Sekanina, 1973

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
annual
Shower group
00029
Peak solar longitude
338.8 °
Radiant right ascension
159.7 °
Radiant declination
18.8 °
Right ascension drift
Not reported
Declination drift
Not reported
Geocentric speed
20.1 km/s
Semimajor axis
2.618 AU
Perihelion distance
0.643 AU
Eccentricity
Not reported
Argument of perihelion
259 °
Ascending node
338.8 °
Inclination
6.2 °
Observed members
24
Technique
P
Submitted on
SD
Reported parent body
1999 RD32?

Reference: 3) Lindblad, 1971b

Source: IAU Meteor Data Center (Jenniskens et al. 2020; Hajdukova & Rudawska)