Star · K3 V
HD 103720
HD 103720 is a main-sequence star of spectral type K3 V in the constellation Virgo, 148.1 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | HIP 58237 |
|---|---|
| Constellation | Virgo |
| Distance | 148.1 light-years (45.4 pc) |
| Apparent magnitude | magnitude 9.50 |
| Absolute magnitude | magnitude 6.21 |
| Spectral type | K3 V |
| Surface temperature | 5,020 K |
| Luminosity | 0.348 L☉ |
| Radius | 0.73 R☉ |
| Mass | 0.794 M☉ |
| Age | 3.8 billion years |
| Metallicity [Fe/H] | -0.02 |
| Right ascension (J2000) | 11h 56m 41.2s |
| Declination (J2000) | −2° 46′ 44″ |
| Space velocity (relative to the Sun) | 17.8 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 9.50. Visible from the whole Southern Hemisphere and north to latitude 87° N. It stands highest at midnight in March, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1878. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.6 million years.
The Sun seen from there
From a planet around HD 103720, the Sun would look like a star of magnitude 8.12, in the direction where our sky has the constellation Pisces. It would be invisible to the naked eye.
Planets
- HD 103720 b 4.56-day orbit · 14.1 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 58268 6.03 light-years
- HIP 57658 10.1 light-years
- HIP 58197 10.7 light-years
- HIP 58872 11.2 light-years
- ULAS J115338.74-014724.1 11.6 light-years
- ULAS J115718.02-013923.9 12.1 light-years
- HIP 58558 12.3 light-years
- ULAS J114925.58-014343.2 13.0 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.