HD 150193 is a binary star system in the constellation of Ophiuchus. The primary star was identified as a Herbig Ae/Be star with a strong solar wind, losing approximately a tenth of solar mass per million years.[6] It does host a very small debris disk, likely due to disk truncation by the nearby stellar companion.[11] The disk is inclined 38±9° to the plane of sky. It appears to be highly evolved and asymmetric,[12] with indications of flattening and grains growth.[9]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Ophiuchus |
HD 150193A | |
Right ascension | 16h 40m 17.9243s[2] |
Declination | −23° 53′ 45.193″[2] |
Apparent magnitude (V) | 8.79[3] |
HD 150193B | |
Right ascension | 16h 40m 17.8688s[4] |
Declination | −23° 53′ 45.966″[4] |
Apparent magnitude (V) | 12.3[5] |
Characteristics | |
HD 150193A | |
Spectral type | A1Ve[6] |
Variable type | Orion[7] |
HD 150193B | |
Spectral type | F9Ve[8] |
Variable type | T Tau[5] |
Astrometry | |
HD 150193A | |
Proper motion (μ) | RA: −4.935 mas/yr[2] Dec.: −19.046 mas/yr[2] |
Parallax (π) | 6.6313 ± 0.0211 mas[2] |
Distance | 492 ± 2 ly (150.8 ± 0.5 pc) |
HD 150193B | |
Proper motion (μ) | RA: −9.247 mas/yr[4] Dec.: −18.250 mas/yr[4] |
Parallax (π) | 6.7543 ± 0.1032 mas[4] |
Distance | 483 ± 7 ly (148 ± 2 pc) |
Position (relative to HD 150193A)[9] | |
Component | HD 150193B |
Angular distance | 1.10±0.03″ |
Position angle | 225.0±0.8° |
Projected separation | 166 AU |
Details | |
HD 150193A | |
Mass | 2.2[6] M☉ |
Radius | 2.0[6] R☉ |
Luminosity | 91.8±1.1[8] L☉ |
Surface gravity (log g) | 4.11[2] cgs |
Temperature | 9,000[6] K |
Rotation | 1.317 d[10] |
Rotational velocity (v sin i) | 100[6] km/s |
Age | 7+2 −1[8] Myr |
HD 150193B | |
Mass | 1.2±0.2[8] M☉ |
Luminosity | 1.35[8] L☉ |
Temperature | 6,166[5] K |
Age | >10[8] Myr |
Other designations | |
Database references | |
SIMBAD | data |
The companion HD 150193B, is a T Tauri young star[5] with a projected separation of 166 AU.[9]
The binary HD 150193 is part of the Upper Scorpius subgroup of Scorpius–Centaurus star-forming region.[citation needed]