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Table A.1.

Parameters of BPS BS 16981−0016.

Name BPS BS 16981−0016
Gaia DR3 3649963989549165440
Right ascension (J2000) α 14:33:30.9
Declination (J2000) δ -01:14:43.0
Magnitude in G-band 14.300 ± 0.003 mag
Parallax ϖ 1.37 ± 0.05 mas
Distance d pc

Effective temperature sdB Teff 29560 ± 270
Surface gravity sdB log g 5.88 ± 0.05
Helium abundance sdB log n(He)/n(H) −2.66 ± 0.13

Color excess E(44-55) 0.085 ± 0.002 mag
Angular diameter logΘ [rad]
Radius sdB RsdB 0.145 ± 0.007 R
Mass sdB MsdB
Luminosity sdB LsdB

Orbital period P 892.5 ± 60.2 d
Orbital eccentricity e 0.36 ± 0.14
Orbital separation*a 2.269 ± 0.056 mas
Orbital inclination*i 56.8 ± 3.2°
Astrometric mass function mf 0.78 ± 0.15 M
Companion mass Mcomp

Notes. *Calculated following Halbwachs et al. (2023) by CDS and provided as additional columns to the Gaia DR3 catalogue Part 3: Non-single stars (I/357).

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