What is the size limit of the gameobjects? - unity3d

Question

I am building an AR application with unity and Mapbox. I have a point to represents a building. I can geolocate the point through Mapbox. I want to see this object everywhere. So, I change the size of objects according to distance.
Firstly, the code is working. But, I could not see the point really far away, 5 km away.
// Update is called once per frame
void Update()
{
// Get user location
// Latitude
x = getLocation.x1.ToString();
user_lat = Convert.ToDouble(x);
user_lat_rad = Math.PI * user_lat / 180.0; // Radian
// Longitude
y = getLocation.y1.ToString();
user_lon = Convert.ToDouble(y);
user_lon_rad = Math.PI * user_lon / 180.0; // Radian
// Change POIs sizes
distances = distance(user_lat_rad, user_lon_rad);
double s = 0.3; // size of the poi
double d = 50f; // specific distance to point (reference distance)
double size = (distances * s) / d;
float size2 = Convert.ToSingle(size);
temp = transform.localScale;
temp.x = size2;
temp.y = size2;
temp.z = size2;
transform.localScale = temp;
}
public double distance(double lat2, double lon2)
{
// Haversine Formula
// Lat2,Lon2 = User Location
// Lat1,Lon1 = POI Location
double dist1 = Sqrt((Pow(Sin((lat2 - lat1) / 2), 2)) + Cos(lat2) * Cos(lat2) * (Pow(Sin((lon2 - lon1) / 2), 2)));
double distance = 2 * r * Asin(dist1);
return distance;
}
Why I couldn't see the point far away even though object size is change? Is there any limitation for this?

Answer 1

As said in the comments the issue most probably is a too small value for the Camera's farClipPlane.
The furthest point relative to the camera that drawing will occur.
Any object/triangle that is further away from the Camera will not be rendered.
In the Inspector it is configured on the Camera component → Clipping Planes → Far
or using code
cameraReference.farClipPlane = XYZ;