SiO maser astrometry of the red transient V838 Monocerotis

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Table 3.

Astrometric parameters from VLBA.

Maser V_LSR	α₀	δ₀	μ_α cos δ	μ_δ	ϖ	D ^(a)
(km s⁻¹)	07^h 04^m	−03° 50′	(mas yr⁻¹)	(mas yr⁻¹)	(mas)	(kpc)
55.1			−0.451 ± 0.079	0.847 ± 0.092	0.166 ± 0.060
54.9			−0.479 ± 0.079	0.736 ± 0.092
Average	–	–	−0.465 ± 0.056	0.791 ± 0.065	–	–

54.2	4.82186(2)	50.6293(1)	−0.553 ± 0.339	0.771 ± 0.167	–	–

Notes. Numbers in parenthesis give position errors in units of the last significant digits.

^(a)

Distance inferred from the inversion of the parallax.

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