Star · F7V
18 Pup
18 Pup is a main-sequence star of spectral type F7V in the constellation Puppis, 73.6 light-years from the Sun.
| Other names | Gl 297.2A · HIP 40035 |
|---|---|
| Constellation | Puppis |
| Distance | 73.6 light-years (22.6 pc) |
| Apparent magnitude | magnitude 5.53 |
| Absolute magnitude | magnitude 3.76 |
| Spectral type | F7V |
| Surface temperature | 6,440 K |
| Luminosity | 2.68 L☉ |
| Radius | 1.31 R☉ |
| Mass | 1.28 M☉ (estimated) |
| Right ascension (J2000) | 8h 10m 39.8s |
| Declination (J2000) | −13° 47′ 57″ |
| Space velocity (relative to the Sun) | 43.2 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.53). Visible from the whole Southern Hemisphere and north to latitude 76° N. South of latitude 76° S it never sets. It stands highest at midnight in January, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1952. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.3 million years.
The Sun seen from there
From a planet around 18 Pup, the Sun would look like a star of magnitude 6.60, in the direction where our sky has the constellation Aquila. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 301A 3.59 light-years
- Gl 301B 3.59 light-years
- Gl 297.2B 5.34 light-years
- PSO J127.5648-11.1861 7.51 light-years
- WISEPC J083641.12-185947.2 10.4 light-years
- GJ 3502B 13.3 light-years
- GJ 3450B 13.7 light-years
- GJ 9273 14.2 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.