EN060402 "Ga-Pa" Fireball

Apr 6, 2002, T = 20^h20^m17.7 ^{s ±} 0.3^{s *}

Atmospheric trajectory data

Beginning

Max. light

Terminal

Velocity (km/s)

20.94 ± 0.06

12.7

3.1 ± 0.9 ^**

Height (km)

84.84 ± 0.15

21.6

16.00 ± 0.09

Longitude (° E)

11.5554 ± 0.0014

10.91

13.8251 ± 0.0009

Latitude (° N)

47.305 ± 0.003

47.51

47.5285 ± 0.0016

Dynamic mass (kg)

600.

100.

15.

Absolute magnitude

-

-18.

-

Slope (° )

42.71 ± 0.02

-

42.12 ± 0.02

Total length (km)/Duration (s)

90.6 / 5.2

Ablation coefficient (s²km^-2)

0.018 ± 0.002 (NF solution, e _l = 107m)

PE coefficient / Fireball type

-/I

EN stations No.

45 Streitheim, 87 Gernsbach, 11 Primda, 85 Tuifstaedt,

68 Losaurach, 43 Oehringen

Radiant data (J2000.0)

Observed

Geocentric

Heliocentric

Right ascension (° )

190.56 ± 0.13

192.29 ± 0.14

-

Declination (° )

21.89 ± 0.20

19.43 ± 0.22

-

Ecliptical longitude (° )

-

-

131.18 ± 0.09

Ecliptical latitude (° )

-

-

10.37 ± 0.09

Initial velocity (km/s)

20.94 ± 0.06

17.50 ± 0.07

37.45 ± 0.06

Orbital data (J2000.0) ^***

a (AU)

2.40 ± 0.03

ω (° )

241.3 ± 0.3

e

0.669 ± 0.004

Ω (° )

16.82666 ± 0.00001

q (AU)

0.7926 ± 0.0014

i (° )

11.35 ± 0.10

Q (AU)

4.00 ± 0.06

Shower

-

Note

* time of the terminal flare at 21.6 km from radiometers at Ondrejov and Kunzak
** not directly measured, derived from the single-body model
*** orbit very similar to the orbit of the Pribram bolide

Dr. Pavel Spurny, Astronomical Institute

Fricova 298, 251 65 Ondrejov Observatory, Czech Republic