Star · M4V
WISEPA J161705.75+180714.3
WISEPA J161705.75+180714.3 is a main-sequence star of spectral type M4V in the constellation Hercules, 41.7 light-years from the Sun.
| Constellation | Hercules |
|---|---|
| Distance | 41.7 light-years (12.8 pc) |
| Apparent magnitude | magnitude 25.07 |
| Absolute magnitude | magnitude 24.53 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 2.41 × 10⁻⁷ L☉ |
| Radius | 0.00185 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 16h 17m 05.7s |
| Declination (J2000) | +18° 07′ 15″ |
| Space velocity (relative to the Sun) | 6.1 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 25.07. Visible from the whole Northern Hemisphere and south to latitude 72° S. North of latitude 72° N it never sets. 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 1984. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 741 thousand years.
The Sun seen from there
From a planet around WISEPA J161705.75+180714.3, the Sun would look like a star of magnitude 5.37, in the direction where our sky has the constellation Eridanus. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- SDSS J162838.77+230821.1 4.56 light-years
- 2MASSI J1553022+153236 4.98 light-years
- γ Ser 6.52 light-years
- WISE J154214.00+223005.2 7.14 light-years
- GJ 3981 7.91 light-years
- 2MASSW J1632291+190441 8.07 light-years
- WISEPA J161441.45+173936.7 8.56 light-years
- Gl 609 9.45 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.