Star · ?
GJ 4225
GJ 4225 is a main-sequence star of spectral type ? in the constellation Pegasus, 54.9 light-years from the Sun.
| Constellation | Pegasus |
|---|---|
| Distance | 54.9 light-years (16.8 pc) |
| Apparent magnitude | magnitude 11.99 |
| Absolute magnitude | magnitude 10.86 |
| Spectral type | ? |
| Surface temperature | 3,620 K |
| Luminosity | 0.0183 L☉ |
| Radius | 0.343 R☉ |
| Mass | 0.332 M☉ (estimated) |
| Right ascension (J2000) | 21h 48m 15.7s |
| Declination (J2000) | +27° 55′ 40″ |
| Space velocity (relative to the Sun) | 57.6 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.99. Visible from the whole Northern Hemisphere and south to latitude 62° S. North of latitude 62° 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 1971. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 974 thousand years.
The Sun seen from there
From a planet around GJ 4225, the Sun would look like a star of magnitude 5.96, in the direction where our sky has the constellation Antlia. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- WISEPC J215751.38+265931.4 2.80 light-years
- GJ 4186B 8.19 light-years
- TYC 2187-512-1 8.35 light-years
- 2MASS J22153705+2110554 8.95 light-years
- Gl 856B 9.51 light-years
- Gl 856A 9.60 light-years
- GJ 4214A 10.5 light-years
- GJ 4215B 10.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.