Star · M4V
WISE J003830.54+840517.7
WISE J003830.54+840517.7 is a main-sequence star of spectral type M4V in the constellation Cepheus, 91.3 light-years from the Sun.
| Constellation | Cepheus |
|---|---|
| Distance | 91.3 light-years (28.0 pc) |
| Apparent magnitude | magnitude 25.03 |
| Absolute magnitude | magnitude 22.79 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 1.20 × 10⁻⁶ L☉ |
| Radius | 0.00412 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 0h 38m 28.8s |
| Declination (J2000) | +84° 05′ 18″ |
| Space velocity (relative to the Sun) | 36.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 25.03. Visible from the whole Northern Hemisphere and south to latitude 6° S. North of latitude 6° N it never sets.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1935. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.6 million years.
The Sun seen from there
From a planet around WISE J003830.54+840517.7, the Sun would look like a star of magnitude 7.07, in the direction where our sky has the constellation Octans. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HD 207897 7.07 light-years
- WISEA J001449.96+795116.1 9.65 light-years
- 2MASS J23072655+8753294 10.7 light-years
- HIP 7346 11.5 light-years
- Gl 56.4 13.4 light-years
- WISE J231921.92+764544.4 15.1 light-years
- HIP 63762 15.8 light-years
- HIP 3132 16.1 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.