Star · M4V
CWISE J163041.79-064338.3
CWISE J163041.79-064338.3 is a main-sequence star of spectral type M4V in the constellation Ophiuchus, 78.3 light-years from the Sun.
| Constellation | Ophiuchus |
|---|---|
| Distance | 78.3 light-years (24.0 pc) |
| Apparent magnitude | magnitude 23.78 |
| Absolute magnitude | magnitude 21.88 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 2.78 × 10⁻⁶ L☉ |
| Radius | 0.00628 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 16h 30m 41.5s |
| Declination (J2000) | −6° 43′ 30″ |
| Space velocity (relative to the Sun) | 65.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 23.78. Visible from the whole Southern Hemisphere and north to latitude 83° N. 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 1948. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.4 million years.
The Sun seen from there
From a planet around CWISE J163041.79-064338.3, the Sun would look like a star of magnitude 6.73, in the direction where our sky has the constellation Taurus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 80218 10.6 light-years
- WISEPA J162208.94-095934.6 10.7 light-years
- HIP 80612 10.9 light-years
- GJ 3957 11.2 light-years
- GJ 2121 11.4 light-years
- GJ 1198 11.7 light-years
- Gl 621 12.6 light-years
- SDSS J163359.23-064056.5 13.1 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.