Star · M4V
SIMP J22455168+1722276
SIMP J22455168+1722276 is a main-sequence star of spectral type M4V in the constellation Pegasus, 182.6 light-years from the Sun.
| Constellation | Pegasus |
|---|---|
| Distance | 182.6 light-years (56.0 pc) |
| Apparent magnitude | magnitude 21.61 |
| Absolute magnitude | magnitude 17.87 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 1.12 × 10⁻⁴ L☉ |
| Radius | 0.0398 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 22h 45m 51.7s |
| Declination (J2000) | +17° 22′ 29″ |
| Space velocity (relative to the Sun) | 59.4 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.61. 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 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 1843. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.2 million years.
The Sun seen from there
From a planet around SIMP J22455168+1722276, the Sun would look like a star of magnitude 8.57, in the direction where our sky has the constellation Hydra. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- SIMP J22543828+1640488 7.38 light-years
- HIP 112535 9.48 light-years
- HIP 112927 10.6 light-years
- PSO J344.8146+20.1917 14.8 light-years
- TOI-5947 15.7 light-years
- 39 Peg 15.7 light-years
- HIP 112580 16.0 light-years
- HIP 112268 17.7 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.