Star · M1V
2MASS J04203904+2355502
2MASS J04203904+2355502 is a main-sequence star of spectral type M1V in the constellation Taurus, 129.8 light-years from the Sun.
| Constellation | Taurus |
|---|---|
| Distance | 129.8 light-years (39.8 pc) |
| Apparent magnitude | magnitude 21.36 |
| Absolute magnitude | magnitude 18.36 |
| Spectral type | M1V |
| Surface temperature | 3,500 K |
| Luminosity | 2.21 × 10⁻⁵ L☉ |
| Radius | 0.0128 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 4h 20m 39.1s |
| Declination (J2000) | +23° 55′ 47″ |
| Space velocity (relative to the Sun) | 32.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.36. Visible from the whole Northern Hemisphere and south to latitude 66° S. North of latitude 66° N it never sets. It stands highest at midnight in November, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1896. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.3 million years.
The Sun seen from there
From a planet around 2MASS J04203904+2355502, the Sun would look like a star of magnitude 7.83, in the direction where our sky has the constellation Scorpius. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- 2MASS J04183483+2131275 6.08 light-years
- HIP 21158 8.45 light-years
- CWISE J041953.55+203628.0 9.40 light-years
- HIP 20012 9.68 light-years
- HIP 21010 10.9 light-years
- HIP 19591 11.3 light-years
- HIP 20557 12.1 light-years
- HIP 21103 12.2 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.