Dust environment and dynamical history of a sample of short-period comets - II. 81P/Wild 2 and 103P/Hartley 2

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Table 1

Log of the observations.

Comet	Observation date	r_h¹	Δ	Resolution	Phase	Position	Afρ (ρ = 10⁴km) ²	Telescope
Comet	Observation date	(AU)	(AU)	(km pixel^-1)	angle (°)	angle (°)	(cm)	Telescope

81P/Wild 2	(a) 2010 Jan. 16.81	−1.639	1.080	808.4	35.4	292.6	566±113	Lulin
	(b) 2010 Apr. 9.06	1.660	0.674	899.5	10.1	262.3	351±70	OSN
	(c) 2010 Apr. 21.06	1.695	0.694	926.2	4.7	208.7	272±54	OSN
	(d) 2010 May 15.96	1.789	0.822	1097.2	14.0	125.2	236±47	OSN
	(e) 2010 Jun. 3.93	1.875	0.992	1323.9	21.0	116.7	258±51	OSN
	(f) 2010 Jul. 6.89	2.046	1.404	1873.7	26.8	110.3	139±27	OSN
	(g) 2010 Aug. 21.85	2.302	2.119	2827.9	25.9	103.7	148±29	OSN

103P/Hartley 2	(a) 2010 Jul. 12.14	−1.744	0.916	641.2	29.0	228.5	9±1	OSN
	(b) 2010 Aug. 4.11	−1.541	0.666	444.4	29.4	210.7	16±3	OSN
	(c) 2010 Sept. 6.04	−1.274	0.352	469.7	35.4	179.6	24±4	OSN
	(d) 2010 Nov. 3.16	1.061	0.150	400.3	58.7	282.4	65±13	OSN

Notes.

⁽¹⁾

Negative values correspond to pre-perihelion, positive values to post-perihelion dates.

⁽²⁾

The Afρ values for phase angle ≤30° have been corrected according to the Eq. (2) (see text).

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