我想了解太阳系行星的轨道周期和直径的信息，能以json格式提供吗？
user
```json
{
  "planets": [
    {
      "name": "Mercury",
      "orbital_period": "88 days",
      "diameter": "4,880 km"
    },
    {
      "name": "Venus",
      "orbital_period": "225 days",
      "diameter": "12,104 km"
    },
    {
      "name": "Earth",
      "orbital_period": "365 days",
      "diameter": "12,742 km"
    },
    {
      "name": "Mars",
      "orbital_period": "687 days",
      "diameter": "6,779 km"
    },
    {
      "name": "Jupiter",
      "orbital_period": "12 years",
      "diameter": "139,820 km"
    },
    {
      "name": "Saturn",
      "orbital_period": "29 years",
      "diameter": "116,460 km"
    },
    {
      "name": "Uranus",
      "orbital_period": "84 years",
      "diameter": "50,724 km"
    },
    {
      "name": "Neptune",
      "orbital_period": "165 years",
      "diameter": "49,244 km"
    }
  ]
}
```
assistant