Get only closest documents using mongodb geoNear or near - mongodb

Question

I'm getting crazy to return closest Venues from a specific point using MongoDB. It is the first time I work on it so I'm totally new to this practice.
What I did at the beginning is to create a 2DIndex of my Venue collection.
Now I'm trying to get Venues in a range of 500 meters from a specific point and the code is this:
Venue.find({ location:
{
$near: [ 52.3835443 , 4.8353073 ],
$maxDistance: 0.5 / 6371
}
}, function (err, venues) {
return venues;
});
Unfortunately it return all documents.
The Venue Model has the field for location like this:
"location": {
"type": {
"type": "string"
},
"coordinates": [{ "type": "Number" }]
}
And all my Venues are like this:
{
"name": "name",
"address": "address",
"location": {
"type": "Point",
"coordinates": [50.1981668, 7.9943994999]
}
}
I also tried using $geoNear but I always receive all documents and not only those in 500 meters distance.
EDIT:
Mongo version is 3.2;
index:
{
"v": 1,
"key": {
"location": "2dsphere"
},
"name": "location_2dsphere",
"ns": "mydb.Venue",
"2dsphereIndexVersion": 2
}
document as wrote above:
{
"name": "A name",
"address": "An address",
"location": {
"type": "Point",
"coordinates": [50.1981668, 7.9943994999]
}
}

Answer 1

The $maxDistance operator constrains the results of a geospatial $near or $nearSphere query to the specified distance. The measuring units for the maximum distance are determined by the coordinate system in use. For GeoJSON point object, specify the distance in meters, not radians. ref here
When I was executing this query I got:
planner returned error: unable to find index for $geoNear query
so added **$geometry ** into query body
Venue.find({ location:
{
$near: {
$geometry : {
type : "Point" ,
coordinates : [ 52.3835443 , 4.8353073 ]},
$maxDistance : 500}}}
}, function (err, venues) {
return venues;
});