Star · M4V
WISE J170745.85-174452.5
WISE J170745.85-174452.5 is a main-sequence star of spectral type M4V in the constellation Ophiuchus, 37.8 light-years from the Sun.
| Constellation | Ophiuchus |
|---|---|
| Distance | 37.8 light-years (11.6 pc) |
| Apparent magnitude | magnitude 23.80 |
| Absolute magnitude | magnitude 23.48 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 6.38 × 10⁻⁷ L☉ |
| Radius | 0.00301 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 17h 07m 45.7s |
| Declination (J2000) | −17° 44′ 52″ |
| Space velocity (relative to the Sun) | 9.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 23.80. Visible from the whole Southern Hemisphere and north to latitude 72° N. South of latitude 72° S 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 1988. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 671 thousand years.
The Sun seen from there
From a planet around WISE J170745.85-174452.5, the Sun would look like a star of magnitude 5.15, in the direction where our sky has the constellation Taurus. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- 2MASSW J1645221-131951 4.66 light-years
- GJ 3954 6.60 light-years
- Gl 654 8.75 light-years
- Gl 653 8.77 light-years
- 2MASS J18000116-1559235 8.89 light-years
- Gl 660B 10.4 light-years
- Gl 660A 10.9 light-years
- 12 Oph 11.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.