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Tau Sagittarii
From Wikipedia, the free encyclopedia
| Observation data Equinox J2000.0 |
|
|---|---|
| Constellation | Sagittarius |
| Right ascension | 19h 06m 56.4s |
| Declination | -27° 40' 14" |
| Apparent magnitude (V) | +3.32 |
| Distance | 120 ± 7 ly (37 ± 2 pc) |
| Spectral type | K1+IIIb |
| Other designations | |
Tau Sagittarii (τ Sgr / τ Sagittarii) is a star in the constellation Sagittarius, 120 light years from Earth. It also has the traditional name Hecatebolus (Greek Εκατηβολος), which was an alternate name for the god Apollo as the "Far Darter" or "Sharp-shooter", the god of sudden death.
It is a spectral type K1 or K2 giant and has an apparent magnitude of +3.32. It is slightly cooler than our sun, of a light orange color.
It is also the closest visible star in the night sky to the origin of the 1977 wow signal, the only radio signal that has been received that may be a sign of extraterrestrial intelligence.
The location of the signal was, at (epoch J2000.0)
- Right Ascension (On the positive horn): 19h25m31s +/- 10s
- Right Ascension (On the negative horn): 19h28m22s +/- 10s
- Declination (Is the same for both horns): -26d57m +/- 20m
- HD 177716 -- High proper-motion Star. SIMBAD Astronomical Database. Retrieved on March 29, 2007.
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