Star · F5IV
θ Sge
θ Sge is a subgiant star of spectral type F5IV in the constellation Sagitta, 145.7 light-years from the Sun.
| Other names | HIP 99352 |
|---|---|
| Constellation | Sagitta |
| Distance | 145.7 light-years (44.7 pc) |
| Apparent magnitude | magnitude 6.51 |
| Absolute magnitude | magnitude 3.26 |
| Spectral type | F5IV |
| Surface temperature | 6,910 K |
| Luminosity | 4.22 L☉ |
| Radius | 1.43 R☉ |
| Mass | 1.43 M☉ (estimated) |
| Right ascension (J2000) | 20h 09m 56.7s |
| Declination (J2000) | +20° 54′ 54″ |
| Space velocity (relative to the Sun) | 47.5 km/s |
In the sky
Too faint for the naked eye (magnitude 6.51); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 69° S. North of latitude 69° N it never sets. It stands highest at midnight in July, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1880. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.6 million years.
The Sun seen from there
From a planet around θ Sge, the Sun would look like a star of magnitude 8.08, in the direction where our sky has the constellation Puppis. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.