Star · B2 IV
Pipirima
Pipirima is a subgiant star of spectral type B2 IV in the constellation Scorpius, 575.9 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | μ² Sco · mu2 Sco · HIP 82545 |
|---|---|
| Constellation | Scorpius |
| Distance | 575.9 light-years (176.6 pc) |
| Apparent magnitude | magnitude 3.56 |
| Absolute magnitude | magnitude −2.67 |
| Spectral type | B2 IV |
| Surface temperature | 21,700 K |
| Luminosity | 6,310 L☉ |
| Radius | 5.6 R☉ |
| Mass | 9.1 M☉ |
| Age | 0.0 billion years |
| Right ascension (J2000) | 16h 52m 20.1s |
| Declination (J2000) | −38° 01′ 03″ |
| Space velocity (relative to the Sun) | 21.4 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 3.56). Visible from the whole Southern Hemisphere and north to latitude 52° N. South of latitude 52° S it never sets. It stands highest at midnight in June, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1450. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 10 million years.
The Sun seen from there
From a planet around Pipirima, the Sun would look like a star of magnitude 11.06, in the direction where our sky has the constellation Auriga. It would be invisible to the naked eye.
Planets
- mu2 Sco b 12.3 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.