Robotic systems for the determination of the composition of solar system materials by means of fireball spectroscopy

Earth, Planets and Space

Table 2 Atmospheric trajectory and radiant data for the fireball discussed in the text (J2000)

Fireball	H_b	H_e	α_g	δ_g	V_∞	V_g	V_h
	(km)	(km)	(°)	(°)	(km s⁻¹)	(km s⁻¹)	(km s⁻¹)
SPMN151211 Geminid	94.2 ± 0.5	67.5 ± 0.5	115.8 ± 0.2	31.5 ± 0.2	36.9 ± 0.3	35.1 ± 0.3	33.5 ± 0.3
SPMN101212 N. χ-Orionid	95.1 ± 0.5	71.2 ± 0.5	81.1 ± 0.3	21.1 ± 0.2	26.6 ± 0.3	24.5 ± 0.3	37.9 ± 0.3
SPMN270712 α-Capricornid	99.7 ± 0.5	79.1 ± 0.5	300.7 ± 0.2	−9.9 ± 0.1	24.0 ± 0.3	21.5 ± 0.3	37.5 ± 0.3

α_g and δ_g denote the equatorial coordinates of the geocentric radiant. H_b, beginning height; H_e, ending height; V_∞, the initial (preatmospheric) velocity of the meteoroid; V_g, the geocentric velocity of the meteoroid; V_h, heliocentric velocity of the meteoroid.