Star · K9V
SDSS J084407.00+284702.1
SDSS J084407.00+284702.1 is a main-sequence star of spectral type K9V in the constellation Cancer, 170.3 light-years from the Sun.
| Constellation | Cancer |
|---|---|
| Distance | 170.3 light-years (52.2 pc) |
| Apparent magnitude | magnitude 21.66 |
| Absolute magnitude | magnitude 18.07 |
| Spectral type | K9V |
| Surface temperature | 3,810 K |
| Luminosity | 1.82 × 10⁻⁵ L☉ |
| Radius | 0.00977 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 8h 44m 07.0s |
| Declination (J2000) | +28° 47′ 01″ |
| Space velocity (relative to the Sun) | 128.2 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.66. Visible from the whole Northern Hemisphere and south to latitude 61° S. North of latitude 61° 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 1856. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.0 million years.
The Sun seen from there
From a planet around SDSS J084407.00+284702.1, the Sun would look like a star of magnitude 8.42, in the direction where our sky has the constellation Microscopium. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 43129 2.71 light-years
- HIP 43882 8.08 light-years
- SDSS J084758.93+260723.9 10.1 light-years
- HIP 42753 13.7 light-years
- 61 Cnc 14.3 light-years
- HIP 43766 14.6 light-years
- HIP 42248 15.8 light-years
- HIP 42392 17.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.