Star · M4V
SDSS J074201.41+205520.5
SDSS J074201.41+205520.5 is a main-sequence star of spectral type M4V in the constellation Gemini, 50.9 light-years from the Sun.
| Constellation | Gemini |
|---|---|
| Distance | 50.9 light-years (15.6 pc) |
| Apparent magnitude | magnitude 23.69 |
| Absolute magnitude | magnitude 22.72 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 1.28 × 10⁻⁶ L☉ |
| Radius | 0.00425 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 7h 42m 01.2s |
| Declination (J2000) | +20° 55′ 20″ |
| Space velocity (relative to the Sun) | 29.6 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 23.69. Visible from the whole Northern Hemisphere and south to latitude 69° S. North of latitude 69° 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 1975. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 903 thousand years.
The Sun seen from there
From a planet around SDSS J074201.41+205520.5, the Sun would look like a star of magnitude 5.80, in the direction where our sky has the constellation Sagittarius. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 289 3.23 light-years
- 2MASSI J0755480+221218 3.77 light-years
- WISEPA J075003.84+272544.8 6.52 light-years
- SDSS J074149.15+235127.5 6.66 light-years
- GJ 3482B 9.18 light-years
- GJ 3481A 9.37 light-years
- Gl 278C 9.80 light-years
- Castor 9.83 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.