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Habitability
61/ 100
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Astarte
- Mass
- 4.50 × Earth
- Radius
- 1.65 × Earth
- Gravity
- 1.65 g
- Surface
- 295 K
- Year
- 874 years
- Day
- 24.0 hrs
- Mass
- 4.50 × Earth
- Radius
- 1.65 × Earth
- Gravity
- 1.65 g
- Surface
- 295 K
- Year
- 874 years
- Day
- 24.0 hrs
Astarte284.00 AUEarth LikeYou are here
Habitable zone
Star and planets drawn to scale (a typical star of its class), with only the star's edge in view. Orbits spaced as in the star system view.
Astarte's moons
6 moons
Moon 2Ice · 1,051,800 km
Moon 5Ice · 118,900 km
Moon 6Ice · 180,900 km
Moon 7Ice · 317,700 km
Moon 16Rock · 70,100 km
Moon 20Ice · 482,800 km
Planet, moons and orbits drawn to one scale; the smallest moons are enlarged so they can be seen.
Surface. Rocky surface with continents, oceans, and active plate tectonics. Diverse biomes if life present.
✓ Conditions could support life. This planet’s modelled conditions could support biological processes: stable temperatures, liquid water and the chemistry life as we know it needs. That makes life possible, not present.
Earth Like
✦ Alpha Centauri
Your planet has a balanced composition with all CHNOPS elements, proper mass (4.5x Earth), and sits in the habitable zone at 284.00 AU.Life possibleMagnetic FieldModerate Activity
Earth-like planets have the perfect combination of composition, temperature, mass, and magnetic field to potentially support complex life as we know it.
Classification Criteria:
✓ All CHNOPS elements present (C, H, N, O, P, S)✓ Mass: 4.5x Earth (0.5-2.0x range)✓ Temperature: 295K (250-320K range)✓ Magnetic field present✓ Distance: 284.00 AU (habitable zone)
Habitability ScoreHabitable
Contributing Factors
water50
Limited water content
geology100
Active geology recycles nutrients and drives carbon cycle (tidal flexing sustains geologic activity)
rotation10
Near tidally locked - one hemisphere perpetually scorched, other frozen, narrow habitable twilight zone only
Organic Chemistry100
All CHNOPS elements present - building blocks of life
atmosphere40
Nitrogen-oxygen atmosphere with trace CO₂, water vapor, and argon
Nitrogen-oxygen atmosphere - breathable and protective (partially stripped by slow rotation)temperature100
Optimal temperature range for liquid water and life
magnetic Field100
Magnetic field provides radiation protection
Physical Properties
Mass
4.50x Earth (2.69e+25 kg)Radius
1.65x Earth (10,518 km)Surface Gravity
1.65x Earth (16.2 m/s²)Surface Temperature
295 K (21 °C / 71 °F)Rotation Period
24.0 hours/dayElemental Composition
Closest Real Exoplanet
Kepler-452 b66% similar
Orbiting Kepler-452| Yours | Kepler-452 b | |
|---|---|---|
| Mass | 4.50 × Earth | 3.29 × Earth |
| Radius | 1.50 × Earth | 1.63 × Earth |
| Density (composition) | 7.32 g/cm³ | 4.19 g/cm³ |
| Temperature | 294.5 K | 265.0 K |
| Starlight received | 1.24 × Earth | 1.10 × Earth |
| Star temperature | 35,000 K | 5,757 K |
Moons
Moon 1rings
Inside the Roche limit (2.80 planet radii): torn apart into a ring system.
Moon 2stable
Small and distant: a quiet, stable companion.
Tidal braking locked the planet to its moon: one face forever moonward.
Moon 3rings
Inside the synchronous orbit: it spiraled inward and was torn apart at the Roche limit (Phobos's fate).
Moon 4merged
Merged with an adjacent moon: too close for both to hold a stable orbit.
Moon 5stable
Small and distant: a quiet, stable companion.
Moon 6stable
Small and distant: a quiet, stable companion.
Moon 7stable
Small and distant: a quiet, stable companion.
Moon 8merged
Merged with an adjacent moon: too close for both to hold a stable orbit.
Moon 9merged
Merged with an adjacent moon: too close for both to hold a stable orbit.
Moon 10rings
Inside the Roche limit (2.80 planet radii): torn apart into a ring system.
Moon 11rings
Inside the synchronous orbit: it spiraled inward and was torn apart at the Roche limit (Phobos's fate).
Moon 12merged
Merged with an adjacent moon: too close for both to hold a stable orbit.
Moon 13rings
Inside the Roche limit (2.80 planet radii): torn apart into a ring system.
Moon 14merged
Merged with an adjacent moon: too close for both to hold a stable orbit.
Moon 15merged
Merged with an adjacent moon: too close for both to hold a stable orbit.
Moon 16receding
Outside the synchronous orbit: slowly receding, like Luna (~cm per year).
Moon 17rings
Inside the synchronous orbit: it spiraled inward and was torn apart at the Roche limit (Phobos's fate).
Moon 18rings
Inside the synchronous orbit: it spiraled inward and was torn apart at the Roche limit (Phobos's fate).
Moon 19merged
Merged with an adjacent moon: too close for both to hold a stable orbit.
Moon 20stable
Small and distant: a quiet, stable companion.
+10 geology: tidal flexing sustains geologic activity