Star · M4V
SDSS J075656.54+231458.5
SDSS J075656.54+231458.5 is a main-sequence star of spectral type M4V in the constellation Gemini, 143.5 light-years from the Sun.
| Constellation | Gemini |
|---|---|
| Distance | 143.5 light-years (44.0 pc) |
| Apparent magnitude | magnitude 22.27 |
| Absolute magnitude | magnitude 19.05 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 3.76 × 10⁻⁵ L☉ |
| Radius | 0.0231 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 7h 56m 56.3s |
| Declination (J2000) | +23° 14′ 57″ |
| Space velocity (relative to the Sun) | 45.0 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 22.27. Visible from the whole Northern Hemisphere and south to latitude 67° S. North of latitude 67° 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 1882. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.5 million years.
The Sun seen from there
From a planet around SDSS J075656.54+231458.5, the Sun would look like a star of magnitude 8.05, in the direction where our sky has the constellation Sagittarius. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- κ Gem 8.85 light-years
- ULAS J081110.86+252931.8 10.5 light-years
- HIP 39528 10.7 light-years
- HIP 38172 11.3 light-years
- ULAS J074720.07+245516.3 11.8 light-years
- HIP 37246 14.9 light-years
- HIP 37165 15.1 light-years
- ψ Cnc 15.3 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.