New asteroid clusters and evidence of collisional fragmentation in the L5 Trojan cloud of Mars

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Table 2

Significance test results for the MT clusters as described in the text.

Cluster	Null Distr.	p-value
MES Method

2018 EC₄ (M = 12, m = 3)	N(μ, Σ)	0.042

2018 EC₄ + (311999) (M = 12, m = 4)	N(μ, Σ)	High

2009 SE (M = 15, m = 3)	N(μ, Σ)	High

2009 SE-2016 AA₁₆₅ (M = 15, m = 2)	N(μ, Σ)	0.086
2009 SE-2016 AA₁₆₅ (M = 15, m = 2)	U(0, 0.6) × N(μ₂₃, Σ₂₃)	0.082
2009 SE-2016 AA₁₆₅ (M = 6, m = 2)	N(μ, Σ)	0.044
2009 SE-2016 AA₁₆₅ (M = 6, m = 2)	U(0,0.6) × N(μ₂₃, Σ₂₃)	0.020
2009 SE-2016 AA₁₆₅ (M = 4, m = 2)	N(μ, Σ)	0.005
2009 SE-2016 AA₁₆₅ (M = 4, m = 2)	U(0,0.6) × N(μ₂₃, Σ₂₃)	0.005

CI Method

2009 SE (M₁ = 15, M₂ = 3)	N(μ, Σ)	<0.001
2009 SE (M₁ = 3, M₂ = 3)	"	0.042
2009 SE (M₁ = 1, M₂ = 3)	"	0.41
2009 SE (M₁ = 15, M₂ = 3)	U(0,0.6) × N(μ₂₃, Σ₂₃)	<0.001
2009 SE (M₁ = 3, M₂ = 3)	"	0.028
2009 SE (M₁ = 1, M₂ = 3)	"	0.22

Notes. All tests were carried out in (d̄, e, sin I) space. The parameters μ are Σ are the mean and covariance of the sample of M asteroids. A “High” rating in the last column indicates that p(M, m)>0.5.

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