Chi Aquilae
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Chi Aquilae |
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| Observation data Epoch J2000 Equinox J2000 |
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|---|---|
| Constellation | Aquila |
| Right ascension | 19h 42m 34.0s |
| Declination | +11° 49' 36"' |
| Apparent magnitude (V) | 5.28 |
| Characteristics | |
| Spectral type | F3V+ |
| U-B color index | -0.04 |
| B-V color index | 0.57 |
| Astrometry | |
| Radial velocity (Rv) | -21.6 km/s |
| Proper motion (μ) | RA: 3.43 mas/yr Dec.: -10.49 mas/yr |
| Parallax (π) | 4.34 ± 2.0 mas |
| Distance | approx. 800 ly (approx. 200 pc) |
| Absolute magnitude (MV) | 5.833 |
| Details | |
| Mass | 1,7 M☉ |
| Radius | 1,4 R☉ |
| Luminosity | 6 L☉ |
| Temperature | 6,000–7,500 K |
| Metallicity | ? |
| Rotation | ? |
| Age | ? years |
| Orbit | |
| Companion | χ Aquilae B |
| Semimajor axis (a) | 0.6" |
| Inclination (i) | 78° |
| Orbit | |
| Companion | χ Aquilae C |
| Semimajor axis (a) | 81.6" |
| Inclination (i) | 48° |
| Orbit | |
| Companion | χ Aquilae D |
| Semimajor axis (a) | 140" |
| Eccentricity (e) | 275 |
| Orbit | |
| Companion | χ Aquilae E |
| Semimajor axis (a) | 9.4" |
| Inclination (i) | 317° |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
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Chi Aquilae (χ Aql / χ Aquilae) is a binary star in the constellation Aquila. It is approximately 750 light-years from Earth.
The primary component, χ Aquilae A, is a yellow G-type giant with an apparent magnitude of +5.6. It's companion, χ Aquilae B, is a white A-type main sequence dwarf with an apparent magnitude of +6.8. The two stars are separated by 0.6 arcseconds and their combined apparent brightness is +5.28 magnitudes.
[edit] References
[edit] Components
| NAME | Right ascension | Declination | Apparent magnitude (V) | Spectral type | Database references |
|---|---|---|---|---|---|
| χ Aquilae B | 19h 42m 34.0093s | +11° 49' 35.698 | 6.7 | A3V | Simbad |
| χ Aquilae C (BD+11 3955C) | 19h 42m 37.9s | +11° 50' 31 | 12.3 | Simbad | |
| χ Aquilae D (CCDM 19425+1150 D) | 19h 42m 25s | +11° 49' 39.4 | 10.3 | Simbad | |
| χ Aquilae E (CCDM 19425+1150 E) | 19h 42m 24.57s | +11° 49' 46.3 | 11.5 | Simbad |
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