14NH, 14ND, and 15NH cometary fluorescence models and D/H measurement in NH

Open Access

Table 1

Observing circumstances.

Comet	UT Date dd/mm/year	R_h (au)	${\dot{R}}_{h}$ $\[\dot{R}_{h}\]$ (km/s)	Δ (au)	$\dot{Δ}$ $\[\dot{\Delta}\]$ (km/s)	Exp. Time (s)
T7	06/05/2004	0.680	15.8	0.607	−65.6	1080
F6	02/02/2013	1.175	−23.9	0.99	−4.5	6600
73P	27/05/2006	0.952	−4.2	0.151	12.3	4800

Notes. R_h and ${\dot{R}}_{h}$ $\[\dot{R}_{h}\]$ are the comet heliocentric distance and radial velocity; Δ and $\dot{Δ}$ $\[\dot{\Delta}\]$ are the geocentric distance and velocity; Exp Time is the total exposure time on the target.

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