Chi Sagittarii
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The Bayer designation Chi Sagittarii (χ Sgr / χ Sagittarii) is shared by three star systems in the constellation Sagittarius. The brightest of these, χ¹ Sagittarii and χ³ Sagittarii are separated by 0.56° on the sky. The dimmer χ² Sagittarii is located between them, 0.10° from χ¹.
[edit] χ¹ Sagittarii
| Observation data Epoch J2000.0 |
|
|---|---|
| Constellation | Sagittarius |
| Right ascension | 19h 25m 16.5s |
| Declination | -24° 30' 31" |
| Apparent magnitude (V) | +5.02 |
| Distance | 221 ± 17 ly (68 ± 5 pc) |
| Spectral type | A4IV/V |
| Other designations | |
Chi-1 Sagittarii is a binary star. The primary is a spectral type A5 dwarf. The companion is approximately 0.12 arcseconds from the primary, putting it about 8 Astronomical Units away. The orbital period is 10.8 years. The combined apparent magnitude of the system is +5.02. It is approximately 220 light years from Earth.
[edit] χ² Sagittarii
| Observation data Epoch J2000.0 |
|
|---|---|
| Constellation | Sagittarius |
| Right ascension | 19h 25m 22.3s |
| Declination | -24° 24' 44" |
| Apparent magnitude (V) | +7.27 |
| Distance | 1200 ± 500 ly (370 ± 150 pc) |
| Spectral type | B7IV |
| Other designations | |
Chi-2 Sagittarii is a spectral type B7 subgiant which has an apparent magnitude of +7.26. It is approximately 1200 light years from Earth.
[edit] χ³ Sagittarii
| Observation data Epoch J2000.0 |
|
|---|---|
| Constellation | Sagittarius |
| Right ascension | 19h 25m 29.7s |
| Declination | -23° 57' 44" |
| Apparent magnitude (V) | +5.45 |
| Distance | 506 ± 81 ly (155 ± 25 pc) |
| Spectral type | K3III |
| Other designations | |
Chi-3 Sagittarii is a spectral type K3 giant which has an apparent magnitude of +5.45. It is 506 light years from Earth.
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