Star · M4V
SIMP J18115567+2728407
SIMP J18115567+2728407 is a main-sequence star of spectral type M4V in the constellation Hercules, 176.1 light-years from the Sun.
| Constellation | Hercules |
|---|---|
| Distance | 176.1 light-years (54.0 pc) |
| Apparent magnitude | magnitude 21.69 |
| Absolute magnitude | magnitude 18.03 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 9.66 × 10⁻⁵ L☉ |
| Radius | 0.037 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 18h 11m 55.7s |
| Declination (J2000) | +27° 28′ 41″ |
| Space velocity (relative to the Sun) | 28.6 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.69. Visible from the whole Northern Hemisphere and south to latitude 63° S. North of latitude 63° N 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 1850. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.1 million years.
The Sun seen from there
From a planet around SIMP J18115567+2728407, the Sun would look like a star of magnitude 8.49, in the direction where our sky has the constellation Columba. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.