Gliese 688
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| Observation data Epoch 2000 |
|
|---|---|
| Constellation (pronunciation) |
Ophiuchus |
| Right ascension | 17h 39m 16.9s |
| Declination | +03° 33' 18.8" |
| Apparent magnitude (V) | 6.52 |
| Characteristics | |
| Spectral type | K2-3 V/? |
| U-B color index | 0.78 |
| B-V color index | 0.95 |
| V-R color index | 0.54 |
| R-I color index | 0.48 |
| Variable type | None |
| Astrometry | |
| Radial velocity (Rv) | +21.2 km/s |
| Proper motion (μ) | RA: -179.67 mas/yr Dec.: -98.24 mas/yr |
| Parallax (π) | 93.08 ± 1.24 mas |
| Distance | 35 ± 0.5 ly (10.7 ± 0.1 pc) |
| Absolute magnitude (MV) | 6.07 |
| Other designations | |
Gliese 688 is a binary star system located thirty-five light-years away, in the constellation Ophiuchus. The A component is an orange, main sequence (K3 V) star.
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