Star · K0
HD 12661
HD 12661 is a main-sequence star of spectral type K0 in the constellation Aries, 123.3 light-years from the Sun. It is orbited by 2 confirmed exoplanet(s).
| Other names | HIP 9683 |
|---|---|
| Constellation | Aries |
| Distance | 123.3 light-years (37.8 pc) |
| Apparent magnitude | magnitude 7.43 |
| Absolute magnitude | magnitude 4.54 |
| Spectral type | K0 |
| Surface temperature | 5,650 K |
| Luminosity | 1.36 L☉ |
| Radius | 1.2 R☉ |
| Mass | 1.2 M☉ |
| Age | 6.4 billion years |
| Metallicity [Fe/H] | 0.36 |
| Right ascension (J2000) | 2h 04m 34.3s |
| Declination (J2000) | +25° 24′ 52″ |
| Space velocity (relative to the Sun) | 59.8 km/s |
In the sky
Too faint for the naked eye (magnitude 7.43); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 65° S. North of latitude 65° N it never sets. It stands highest at midnight in October, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1903. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.2 million years.
The Sun seen from there
From a planet around HD 12661, the Sun would look like a star of magnitude 7.72, in the direction where our sky has the constellation Hydra. It would be invisible to the naked eye.
Planets
- HD 12661 b 263-day orbit · 13.3 R⊕
- HD 12661 c 1,710-day orbit · 13.2 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- WISEA J020229.29+230513.9 5.68 light-years
- HIP 10510 7.13 light-years
- SDSS J020608.97+223559.2 7.35 light-years
- λ Ari 9.90 light-years
- HIP 10680 11.3 light-years
- HIP 10679 11.4 light-years
- 20 Ari 12.1 light-years
- HS Psc 13.5 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.