HD 150193
Young binary star system in the constellation Ophiuchus
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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 ICRS | |
|---|---|
| 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 | |
| CD−23°12887, HD 150193, HIP 81624, SAO 184536, GSC 06796-01287, 2MASS J16401792-2353452, V2307 Oph[3] | |
| 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]