Star · A2V
53 Oph
53 Oph is a main-sequence star of spectral type A2V in the constellation Ophiuchus, 376.0 light-years from the Sun.
| Other names | HIP 85998 |
|---|---|
| Constellation | Ophiuchus |
| Distance | 376.0 light-years (115.3 pc) |
| Apparent magnitude | magnitude 5.80 |
| Absolute magnitude | magnitude 0.49 |
| Spectral type | A2V |
| Surface temperature | 9,650 K |
| Luminosity | 71 L☉ |
| Radius | 3.01 R☉ |
| Mass | 3.07 M☉ (estimated) |
| Right ascension (J2000) | 17h 34m 36.7s |
| Declination (J2000) | +9° 35′ 12″ |
| Space velocity (relative to the Sun) | 14.8 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.80). Visible from the whole Northern Hemisphere and south to latitude 80° S. It stands highest at midnight in June, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1650. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 6.7 million years.
The Sun seen from there
From a planet around 53 Oph, the Sun would look like a star of magnitude 10.14, in the direction where our sky has the constellation Orion. It would be invisible to the naked eye.
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.