### Mass or your weight or object weight on other planets

Formula for the weight of a body on another planet is as follows $$F=G\cdot\frac{M\cdot m}{r^2}$$ where:

G-gravitational constant;

M-mass of the planet;

m-object mass;

r-distance from the center of the planet.

Because $$G\cdot\frac{M}{r^2}$$ is called the acceleration of gravity on the surface of the planet and denoted by g, which leads to a simple formula linking the mass of a body to its weight: $$ F_{g}=m\cdot g$$

Below is a table according to which we can independently calculate the weight of an object on a given planet.

Planet |
Equatorial diameter [km] |
Mass (10^{21}kg) |
Gravitational acceleration [m/s²] |

Mercury |
4 879 |
330,2 |
3,701 |

Venus |
12 104 |
4 868,5 |
8,87 |

Earth |
12 756 |
5 974,2 |
9,80 |

Mars |
6 805 |
641,9 |
3,69 |

Jupiter |
142 984 |
1 898 600,8 |
24,70 |

Saturn |
120 536 |
568 516,8 |
8,96 |

Uranus |
51 118 |
86 841,0 |
8,69 |

Neptune |
49 528 |
102 439,6 |
11 |

Pluto |
2 346 |
13,03 |
0,62 |

The calculator converts your weight (or other object) as if you put a bathroom scale on another planet (assuming you could do it on gas planets) and measured your weight.

### Your age in days and years on other planets.

On each of the planets in the solar system, the day and year are different in length. But what is a day and what is a year?

As probably all of us know, the Earth is in motion. In fact, it is several movements at once.

The first is rotation around its axis. The Earth rotates on the axis between the North and South Poles like a spinning top. The time it takes for the Earth to revolve around its axis is called a day. The day is divided into 24 hours, each of which is divided into 60 minutes, and each minute is divided into 60 seconds. Each planet has a different rotation time around its axis. The time of rotation around its axis, e.g. of great Jupiter, is approx. 10 hours (this is the Jupiter day), while the full rotation of small Venus is approx. 5832 hours (i.e. one Venus day lasts approx. 243 Earth days).

The second movement is the orbit of the earth around the sun. The earth orbits the sun like a yo-yo toy spun overhead. We define the full circle of the earth around the sun as a year. The year is just over 365 days. As we already know from elementary school, planets closer to the sun have a smaller orbit than planets further away. Therefore, the time of their circulation varies. The closest planet to the sun, Mercury, takes only 88 days to complete a revolution around the sun, and the farthest dwarf planet Pluto takes 248 Earth years.

Below is a table with the rotation and orbital times for all planets.

Planet |
Rotation period around the axis |
Circulation time in days |

Mercury |
58d 15h 26m |
87,969 |

Venus |
243d 0h 27m |
224,701 |

Earth |
23h 56m 04s |
365,256 |

Mars |
24h 37m 23s |
686,960 |

Jupiter |
9h 55m 30s |
4 333,287 |

Saturn |
10h 39m 22s |
10 756,200 |

Uranus |
17h 14m 24s |
30 707,490 |

Neptune |
16h 06m 36s |
60 223,353 |

Pluto |
6d 9h 21m 36s |
90 403 |