New constraints on the location of P9 obtained with the INPOP19a planetary ephemeris

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Table 2.

Zones maximizing criteria T1 and T2.

Criterion	Zones	RA	Dec
T1	Z₁	[0° : 40°]	[−21° : 37°]
	Z₂	[180° : 220°]	[−34° : 20°]
T2	Z₁	[0° : 40°]	[−21° : 37°]
	Z₂	[180° : 220°]	[−34° : 20°]
	Z₃	[51° : 109°]	[−9.5° : 50°]
	Z₄	[225° : 284°]	[−52° : 9°]

Notes. The zones are deduced from Figs. 4 and 5. They are obtained for r = 800 AU and 10 M_⊕. The first column gives the criterion maximized in the zones (label given in Col. 2) defined with intervals in RA (Col. 3) and in Dec (Col. 4).

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