Star · T8.5
WISEP J121756.91+162640.2 A
WISEP J121756.91+162640.2 A is a main-sequence star of spectral type T8.5 in the constellation Coma Berenices, 32.9 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Coma Berenices |
|---|---|
| Distance | 32.9 light-years (10.1 pc) |
| Apparent magnitude | magnitude 26.84 |
| Absolute magnitude | magnitude 26.82 |
| Spectral type | T8.5 |
| Surface temperature | 580 K |
| Luminosity | 8.13 × 10⁻⁷ L☉ |
| Radius | 0.091 R☉ |
| Mass | 0.029 M☉ |
| Age | 6.0 billion years |
| Right ascension (J2000) | 12h 17m 56.9s |
| Declination (J2000) | +16° 26′ 40″ |
In the sky
A telescope is needed to see it: its apparent magnitude is 26.84. Visible from the whole Northern Hemisphere and south to latitude 74° S. North of latitude 74° N it never sets. It stands highest at midnight in March, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1993. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 584 thousand years.
The Sun seen from there
From a planet around WISEP J121756.91+162640.2 A, the Sun would look like a star of magnitude 4.85, in the direction where our sky has the constellation Cetus. It would be visible to the naked eye.
Planets
- WISEP J121756.91+162640.2 A b 10.5 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- WISEPC J121756.91+162640.2 2.61 light-years
- Denebola 5.22 light-years
- Gl 452.1 7.13 light-years
- Noquisi 7.52 light-years
- Ross 458 8.22 light-years
- Gar 8.33 light-years
- ULAS J131943.77+120900.2 8.85 light-years
- HD 115404 A 8.92 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.