Orbital and spectral characterization of the benchmark T-type brown dwarf HD 19467B

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Table 3

Astrometry relative to the star of HD 19467B.

BJD-2 450 000	Filter	ρ	PA	Pixel scale	North correction angle
		(mas)	(°)	(mas pix⁻¹)	(°)
8032.3	L′	1637 ± 19	238.68 ± 0.47	27.20 ± 0.05	−0.5 ± 0.1
8061.2	K1	1636.7 ± 1.8	239.39 ± 0.13	12.267 ± 0.009	−1.745 ± 0.053
8061.2	K2	1634.4 ± 5.0	239.44 ± 0.21	12.263 ± 0.009	−1.745 ± 0.053
8409.3	H2	1631.4 ± 1.6	238.88 ± 0.12	12.255 ± 0.009	−1.804 ± 0.043
8409.3	H3	1631.4 ± 1.6	238.88 ± 0.12	12.251 ± 0.009	−1.804 ± 0.043

Notes. The astrometric uncertainties were derived assuming an error budget including the measurement uncertainties (image post-processing) and the systematic uncertainties (calibration).

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