K2-21
2 Planets
273 light years away
Visualisation Info
- Notes:
- Star/planet sizes are to scale
- Distances between star/planets 30% scale (change with 'Distances' control)
- Time scale is 1 second to 1 day (about 6 minutes to 1 Earth year)
- If a star/planet doesn't have radius data, it is shown transparent with a default size (Sun/Earth)
- Basic circular orbits, all on same plane
Visualisation Camera Controls
| Mouse | Touch | |
|---|---|---|
| Zoom: | Mouse wheel | Two finger pinch |
| Pan: | Right-click & drag | Two finger drag |
| Rotate: | Left-click & drag | One finger drag |
System Visualisation
Planetary System Info
Star Details
Name:
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Distance:
Pc
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ly
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Mass:
M☉
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Radius:
R☉
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Luminosity:
L☉
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Spectral Type:
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Coordinates:
RA:
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Dec:
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Planet Details
Name:
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Mass:
M⊕
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Radius:
R⊕
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Orbital Period:
days
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Semi-major Axis:
AU
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Temperature:
K
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