Star · M4V
WISE J174102.78-464225.5
WISE J174102.78-464225.5 is a main-sequence star of spectral type M4V in the constellation Ara, 64.6 light-years from the Sun.
| Constellation | Ara |
|---|---|
| Distance | 64.6 light-years (19.8 pc) |
| Apparent magnitude | magnitude 21.29 |
| Absolute magnitude | magnitude 19.81 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 1.88 × 10⁻⁵ L☉ |
| Radius | 0.0163 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 17h 41m 02.8s |
| Declination (J2000) | −46° 42′ 21″ |
| Space velocity (relative to the Sun) | 33.6 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.29. Visible from the whole Southern Hemisphere and north to latitude 43° N. South of latitude 43° 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 1961. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.1 million years.
The Sun seen from there
From a planet around WISE J174102.78-464225.5, the Sun would look like a star of magnitude 6.31, in the direction where our sky has the constellation Auriga. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- λ Ara 4.93 light-years
- DENIS-P J1756561-480509 5.60 light-years
- GJ 4012 8.94 light-years
- Gl 654.3 9.39 light-years
- Gaia J171340.47-395211.8 9.51 light-years
- η Sco 11.3 light-years
- Gl 646B 11.9 light-years
- Gl 646A 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.