Deimos photometric properties: Analysis of 20 years of observations (2004-2024) by the Mars Express HRSC camera

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Table 5

Hapke parameters found from the global SRC disk-resolved analysis using different versions of the Hapke model and different disk functions for the Kaasailanen-Shkuratov model.

Model	ω	g or b	c	B_sh,0^†	h_sh^†	$\bar{θ}$ $\[\bar{\theta}\]$ [deg]	B_cb,0^†	h_cb^†	Porosity	RMS
H2012-1THG^a	0.068 ± 0.001	−0.275 ± 0.009	−	2.14 ± 0.14	0.065 ± 0.004	19.4 ± 0.1	−	−	85.7%	0.00439
H2012-2THG^b	0.075 ± 0.003	0.29 ± 0.01	0.63 ± 0.09	2.14 ± 0.14	0.065 ± 0.004	21.2 ± 0.6	−	−	85.7%	0.00438
H2012-1THG-CBOE^c	0.067 ± 0.002	−0.275 ± 0.008	−	2.14 ± 0.14	0.065 ± 0.004	18.6 ± 0.6	0.69 ± 0.20	0.29 ± 0.15	85.7%	0.00506
H2012-2THG-CBOE^d	0.072 ± 0.003	0.28 ± 0.02	0.75 ± 0.10	2.14 ± 0.14	0.065 ± 0.004	19.8 ± 0.9	0.69 ± 0.20	0.29 ± 0.15	85.7%	0.00507

Model	A_N	ν₁	ν₂	m	c_l	k				RMS

KS1^e	0.080 ± 0.001	10.0*	1.07 ± 0.03	1.73 ± 0.02	0.88 ± 0.04	−				0.00439
KS2^f	0.080 ± 0.001	10.0*	1.10 ± 0.01	1.72 ± 0.01	−	0.54 ± 0.03				0.00442
KS3^g	0.077 ± 0.001	8.88 ± 0.06	0.91 ± 0.02	1.35 ± 0.10	−	−				0.00494

Notes. ^† The OE parameters were obtained with a first inversion using only data at phase angles smaller than 20°, and fixed afterwards. ^(a)H2012-1THG: Hapke 2012 model with porosity factor, single-term Henyey Greenstein phase function. ^(b)H2012-2THG: Hapke 2012 model with porosity factor, double-term Henyey Greenstein phase function. ^(c)H2012-1THG-CBOE: Hapke 2012 model with porosity factor, single-term Henyey Greenstein phase function, coherent-backscattering opposition effect. ^(d)H2012-2THG-CBOE: Hapke 2012 model with porosity factor, double-term Henyey Greenstein phase function, coherent-backscattering opposition effect. ^(e)KS1: Kaasalainen-Shkuratov model with double-exponential phase function, and McEwen disk function. ^(f)KS2: Kaasalainen-Shkuratov model with double-exponential phase function, and Minnaert disk function. ^(g)KS3: Kaasalainen-Shkuratov model with double-exponential phase function, and Akimov disk function.

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