Free Access

Table 2.

Different types of uncertainties for the synthetic and real meteor data.

Synthetic meteor data
N MADa (estimated) Uncertainties median (propagated) MADa (propagated)
151 RA 0.11 0.33 0.12
(random) Dec 0.07 0.16 0.09
V 0.40

161 RA 0.05 0.35 0.14
(shower) Dec 0.03 0.25 0.16
V 0.45

126b RA 0.03 0.37 0.13
(shower) Dec 0.03 0.27 0.18
V 0.44

Real meteor data

177 RA 0.64 0.29
(all) Dec 0.29 0.18
Vg 1.18 0.70

71 RA 0.72 0.21
(Perseids) Dec 0.22 0.22
Vg 0.88 0.48

Notes.

(a)

For a symmetric distribution the median absolute deviation equals half the interquartile range. Figure 9 shows graphically the statistical properties of the propagated uncertainties.

(b)

Meteors with elevations > 40. Uncertainties for geocentric radiants in () and for V and Vg in (km s−1).

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.