The capital M stands for mass, while the symbol that comes after it denotes the body of which we are describing the mass. 1 M ⊕ thus denotes 1 Earth mass, while 5 M ⊕ is five Earth masses.
Usually solar mass (the mass of the Sun) is expressed this way to denote the mass of other stars. The other units don’t tend to be used generally. Nevertheless, here is a list of masses you might use:
M ☉ = solar mass = 1.99 × 10 30 kg = 332,948.6 M ⊕
M ☿ = Mercury mass = 3.30 × 10 23 kg = 5.58 × 10 −50 M ⊕
M ♀ = Venus mass = 4.87 × 10 24 kg = 0.81 M ⊕
M ⊕ = Earth mass = 5.97 × 10 24 kg = 1 M ⊕
M ☽ = Moon mass = 7.35 × 10 22 kg = 0.01 M ⊕
M ♂ = Mars mass = 6.39 × 10 23 kg = 0.11 M ⊕
M ♃ = Jupiter mass = 1.9 × 10 27 kg = 317.83 M ⊕
M ♄ = Saturn mass = 5.68 × 10 26 kg = 95.16 M ⊕
M ♅ = Uranus mass = 8.68 × 10 25 kg = 14.54 MM ♆ = Neptune mass = 1.02 × 10 26 kg = 17.15 M ⊕
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Answer:
It means Earth mass(es).
The capital M stands for mass, while the symbol that comes after it denotes the body of which we are describing the mass. 1 M ⊕ thus denotes 1 Earth mass, while 5 M ⊕ is five Earth masses.
Usually solar mass (the mass of the Sun) is expressed this way to denote the mass of other stars. The other units don’t tend to be used generally. Nevertheless, here is a list of masses you might use:
M ☉ = solar mass = 1.99 × 10 30 kg = 332,948.6 M ⊕
M ☿ = Mercury mass = 3.30 × 10 23 kg = 5.58 × 10 −50 M ⊕
M ♀ = Venus mass = 4.87 × 10 24 kg = 0.81 M ⊕
M ⊕ = Earth mass = 5.97 × 10 24 kg = 1 M ⊕
M ☽ = Moon mass = 7.35 × 10 22 kg = 0.01 M ⊕
M ♂ = Mars mass = 6.39 × 10 23 kg = 0.11 M ⊕
M ♃ = Jupiter mass = 1.9 × 10 27 kg = 317.83 M ⊕
M ♄ = Saturn mass = 5.68 × 10 26 kg = 95.16 M ⊕
M ♅ = Uranus mass = 8.68 × 10 25 kg = 14.54 MM ♆ = Neptune mass = 1.02 × 10 26 kg = 17.15 M ⊕
M ♇ = Pluto mass = 1.31 × 10 22 kg = 0.002 M ⊕
Step-by-step explanation:
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