Star · K8
GJ 4181
GJ 4181 is a main-sequence star of spectral type K8 in the constellation Vulpecula, 111.3 light-years from the Sun.
| Other names | HIP 104329 |
|---|---|
| Constellation | Vulpecula |
| Distance | 111.3 light-years (34.1 pc) |
| Apparent magnitude | magnitude 9.84 |
| Absolute magnitude | magnitude 7.18 |
| Spectral type | K8 |
| Surface temperature | 4,390 K |
| Luminosity | 0.229 L☉ |
| Radius | 0.828 R☉ |
| Mass | 0.692 M☉ (estimated) |
| Right ascension (J2000) | 21h 08m 01.9s |
| Declination (J2000) | +25° 10′ 35″ |
| Space velocity (relative to the Sun) | 27.0 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 9.84. Visible from the whole Northern Hemisphere and south to latitude 65° S. North of latitude 65° N it never sets. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1915. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.0 million years.
The Sun seen from there
From a planet around GJ 4181, the Sun would look like a star of magnitude 7.49, in the direction where our sky has the constellation Pyxis. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 103455 8.57 light-years
- GJ 4182 10.1 light-years
- HIP 104304 11.1 light-years
- 2MASSW J2101154+175658 14.6 light-years
- HIP 104659 14.6 light-years
- GJ 4189A 14.6 light-years
- GJ 4153 15.1 light-years
- 2MASS J21395208+2148397 15.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.