Star · M4V
SDSS J084036.04+143424.3
SDSS J084036.04+143424.3 is a main-sequence star of spectral type M4V in the constellation Cancer, 195.7 light-years from the Sun.
| Constellation | Cancer |
|---|---|
| Distance | 195.7 light-years (60.0 pc) |
| Apparent magnitude | magnitude 21.73 |
| Absolute magnitude | magnitude 17.84 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 1.15 × 10⁻⁴ L☉ |
| Radius | 0.0403 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 8h 40m 36.1s |
| Declination (J2000) | +14° 34′ 25″ |
| Space velocity (relative to the Sun) | 45.7 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.73. Visible from the whole Northern Hemisphere and south to latitude 75° S. North of latitude 75° N it never sets. It stands highest at midnight in January, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1830. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.5 million years.
The Sun seen from there
From a planet around SDSS J084036.04+143424.3, the Sun would look like a star of magnitude 8.72, in the direction where our sky has the constellation Capricornus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 42563 9.48 light-years
- HIP 42968 10.5 light-years
- SDSS J085602.05+124014.3 14.4 light-years
- 50 Cnc 17.2 light-years
- SIMP J08511977+1043470 18.3 light-years
- HIP 43751 18.8 light-years
- HIP 42084 19.0 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.