Star · ?
GJ 4154
GJ 4154 is a main-sequence star of spectral type ? in the constellation Octans, 34.8 light-years from the Sun.
| Constellation | Octans |
|---|---|
| Distance | 34.8 light-years (10.7 pc) |
| Apparent magnitude | magnitude 11.50 |
| Absolute magnitude | magnitude 11.36 |
| Spectral type | ? |
| Surface temperature | 3,650 K |
| Luminosity | 0.011 L☉ |
| Radius | 0.263 R☉ |
| Mass | 0.267 M☉ (estimated) |
| Right ascension (J2000) | 20h 46m 44.5s |
| Declination (J2000) | −81° 43′ 37″ |
| Space velocity (relative to the Sun) | 38.7 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.50. Visible from the whole Southern Hemisphere and north to latitude 8° N. South of latitude 8° S it never sets.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1991. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 617 thousand years.
The Sun seen from there
From a planet around GJ 4154, the Sun would look like a star of magnitude 4.97, in the direction where our sky has the constellation Camelopardalis. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- WISEPA J231336.40-803700.3 3.47 light-years
- LHS 475 6.25 light-years
- HIP 117828 6.48 light-years
- WISEPA J201824.96-742325.9 6.53 light-years
- CWISEP J010527.69-783419.3 7.34 light-years
- WISEPA J213456.73-713743.6 7.76 light-years
- GJ 1251 7.95 light-years
- Gl 877 8.25 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.