Star · F7V
99 Her
99 Her is a main-sequence star of spectral type F7V in the constellation Hercules, 51.4 light-years from the Sun.
| Other names | Gl 704A · HIP 88745 |
|---|---|
| Constellation | Hercules |
| Distance | 51.4 light-years (15.8 pc) |
| Apparent magnitude | magnitude 5.05 |
| Absolute magnitude | magnitude 4.06 |
| Spectral type | F7V |
| Surface temperature | 6,260 K |
| Luminosity | 2.07 L☉ |
| Radius | 1.22 R☉ |
| Mass | 1.2 M☉ (estimated) |
| Right ascension (J2000) | 18h 07m 01.5s |
| Declination (J2000) | +30° 33′ 44″ |
| Space velocity (relative to the Sun) | 8.5 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.05). Visible from the whole Northern Hemisphere and south to latitude 59° S. North of latitude 59° N it never sets. 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 1975. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 913 thousand years.
The Sun seen from there
From a planet around 99 Her, the Sun would look like a star of magnitude 5.82, in the direction where our sky has the constellation Columba. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- WISEPA J180435.40+311706.1 1.34 light-years
- GJ 4026 7.03 light-years
- GJ 4055 7.14 light-years
- WISE J181329.40+283533.3 7.37 light-years
- GJ 4044 8.12 light-years
- Gl 704B 8.98 light-years
- 2MASSI J1721039+334415 9.40 light-years
- 72 Her 9.50 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.