Star · K8V
SIMP J13391950+1523440
SIMP J13391950+1523440 is a main-sequence star of spectral type K8V in the constellation Boötes, 257.9 light-years from the Sun.
| Constellation | Boötes |
|---|---|
| Distance | 257.9 light-years (79.1 pc) |
| Apparent magnitude | magnitude 21.63 |
| Absolute magnitude | magnitude 17.14 |
| Spectral type | K8V |
| Surface temperature | 3,870 K |
| Luminosity | 3.97 × 10⁻⁵ L☉ |
| Radius | 0.014 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 13h 39m 19.3s |
| Declination (J2000) | +15° 23′ 41″ |
| Space velocity (relative to the Sun) | 64.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.63. Visible from the whole Northern Hemisphere and south to latitude 75° S. North of latitude 75° N it never sets. It stands highest at midnight in April, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1768. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.6 million years.
The Sun seen from there
From a planet around SIMP J13391950+1523440, the Sun would look like a star of magnitude 9.32, in the direction where our sky has the constellation Cetus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 66740 7.95 light-years
- HIP 67685 15.8 light-years
- HIP 65583 16.2 light-years
- HIP 65598 16.7 light-years
- υ Boo 18.4 light-years
- HIP 65589 19.6 light-years
- HIP 66066 19.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.