Star · M3V
Ross 154
Ross 154 is a main-sequence star of spectral type M3V in the constellation Sagittarius, 9.71 light-years from the Sun.
| Other names | Gl 729 · HIP 92403 |
|---|---|
| Constellation | Sagittarius |
| Distance | 9.71 light-years (2.98 pc) |
| Apparent magnitude | magnitude 10.37 |
| Absolute magnitude | magnitude 13.00 |
| Spectral type | M3V |
| Surface temperature | 3,780 K |
| Luminosity | 0.00202 L☉ |
| Radius | 0.105 R☉ |
| Mass | 0.128 M☉ (estimated) |
| Right ascension (J2000) | 18h 49m 49.3s |
| Declination (J2000) | −23° 50′ 15″ |
| Space velocity (relative to the Sun) | 14.6 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 10.37. Visible from the whole Southern Hemisphere and north to latitude 66° N. South of latitude 66° S 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 2016. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 172 thousand years.
The Sun seen from there
From a planet around Ross 154, the Sun would look like a star of magnitude 2.20, in the direction where our sky has the constellation Gemini. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Barnard's Star 5.55 light-years
- Lacaille 8760 7.41 light-years
- GJ 674 7.79 light-years
- Rigil Kentaurus 8.13 light-years
- Toliman 8.13 light-years
- Wolf 1061 8.23 light-years
- Proxima Centauri 8.25 light-years
- GJ 682 8.62 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.