Star · K9V
SIMP J22543828+1640488
SIMP J22543828+1640488 is a main-sequence star of spectral type K9V in the constellation Pegasus, 184.7 light-years from the Sun.
| Constellation | Pegasus |
|---|---|
| Distance | 184.7 light-years (56.6 pc) |
| Apparent magnitude | magnitude 21.64 |
| Absolute magnitude | magnitude 17.87 |
| Spectral type | K9V |
| Surface temperature | 3,760 K |
| Luminosity | 2.32 × 10⁻⁵ L☉ |
| Radius | 0.0113 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 22h 54m 38.2s |
| Declination (J2000) | +16° 40′ 45″ |
| Space velocity (relative to the Sun) | 66.1 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.64. Visible from the whole Northern Hemisphere and south to latitude 73° S. North of latitude 73° N it never sets. It stands highest at midnight in September, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1841. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.3 million years.
The Sun seen from there
From a planet around SIMP J22543828+1640488, the Sun would look like a star of magnitude 8.60, in the direction where our sky has the constellation Crater. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- SIMP J22455168+1722276 7.38 light-years
- HIP 112927 11.3 light-years
- HIP 112535 12.0 light-years
- HIP 112580 14.0 light-years
- PSO J344.8146+20.1917 14.4 light-years
- HIP 113514 15.0 light-years
- HIP 114088 16.4 light-years
- HIP 114683 18.4 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.