Star · G0
Rosalíadecastro
Rosalíadecastro is a main-sequence star of spectral type G0 in the constellation Ophiuchus, 239.3 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | HD 149143 · HIP 81022 |
|---|---|
| Constellation | Ophiuchus |
| Distance | 239.3 light-years (73.4 pc) |
| Apparent magnitude | magnitude 7.89 |
| Absolute magnitude | magnitude 3.56 |
| Spectral type | G0 |
| Surface temperature | 5,860 K |
| Luminosity | 2.24 L☉ |
| Radius | 1.44 R☉ |
| Mass | 1.2 M☉ |
| Age | 4.3 billion years |
| Metallicity [Fe/H] | 0.29 |
| Right ascension (J2000) | 16h 32m 51.0s |
| Declination (J2000) | +2° 05′ 06″ |
| Space velocity (relative to the Sun) | 32.7 km/s |
In the sky
Too faint for the naked eye (magnitude 7.89); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 88° S. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1787. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.2 million years.
The Sun seen from there
From a planet around Rosalíadecastro, the Sun would look like a star of magnitude 9.16, in the direction where our sky has the constellation Eridanus. It would be invisible to the naked eye.
Planets
- HD 149143 b 4.07-day orbit · 13.6 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- SDSS J163355.23+010027.0 4.64 light-years
- HIP 80195 12.4 light-years
- HIP 80163 13.3 light-years
- SIMP J16280690+0517027 17.7 light-years
- HIP 80502 18.0 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.