Star · K5V
61 Cyg
61 Cyg is a main-sequence star of spectral type K5V in the constellation Cygnus, 11.4 light-years from the Sun.
| Other names | Gl 820A · HIP 104214 |
|---|---|
| Constellation | Cygnus |
| Distance | 11.4 light-years (3.50 pc) |
| Apparent magnitude | magnitude 5.20 |
| Absolute magnitude | magnitude 7.48 |
| Spectral type | K5V |
| Surface temperature | 4,580 K |
| Luminosity | 0.15 L☉ |
| Radius | 0.615 R☉ |
| Mass | 0.623 M☉ (estimated) |
| Right ascension (J2000) | 21h 06m 53.3s |
| Declination (J2000) | +38° 45′ 01″ |
| Space velocity (relative to the Sun) | 109.7 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.20). Visible from the whole Northern Hemisphere and south to latitude 51° S. North of latitude 51° N it never sets. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 2015. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 202 thousand years.
The Sun seen from there
From a planet around 61 Cyg, the Sun would look like a star of magnitude 2.55, in the direction where our sky has the constellation Vela. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- 61 Cyg 0.00 light-years
- GJ 1245B 5.08 light-years
- Gl 860B 5.15 light-years
- Kruger 60 5.16 light-years
- GJ 1245A 5.17 light-years
- Ross 248 5.59 light-years
- Struve 2398 B 6.08 light-years
- Struve 2398 A 6.08 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.