Star · G0
Ogma
Ogma is a main-sequence star of spectral type G0 in the constellation Hercules, 248.6 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | HD 149026 · HIP 80838 |
|---|---|
| Constellation | Hercules |
| Distance | 248.6 light-years (76.2 pc) |
| Apparent magnitude | magnitude 8.15 |
| Absolute magnitude | magnitude 3.74 |
| Spectral type | G0 |
| Surface temperature | 6,180 K |
| Luminosity | 3.02 L☉ |
| Radius | 1.41 R☉ |
| Mass | 1.42 M☉ |
| Age | 2.6 billion years |
| Metallicity [Fe/H] | 0.32 |
| Right ascension (J2000) | 16h 30m 29.6s |
| Declination (J2000) | +38° 20′ 50″ |
| Space velocity (relative to the Sun) | 38.4 km/s |
In the sky
Too faint for the naked eye (magnitude 8.15); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 52° S. North of latitude 52° N it never sets. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1777. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.4 million years.
The Sun seen from there
From a planet around Ogma, the Sun would look like a star of magnitude 9.24, in the direction where our sky has the constellation Caelum. It would be invisible to the naked eye.
Planets
- HD 149026 b 2.88-day orbit · 8.29 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- 25 Her 6.14 light-years
- 2MASS J16231308+3950419 10.7 light-years
- HIP 80258 12.8 light-years
- HIP 81732 19.6 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.