scale1.vl

{
    "height": 300,
    "width": 300,
    "$schema": "https://vega.github.io/schema/vega-lite/v3.json",
    "projection": {
        "scale": 470,
        "type": "orthographic"
    },
    "layer": [
        {
            "mark": {
                "fill": "rgb(149,181,146)",
                "type": "geoshape"
            },
            "data": {
                "url": "https://gicentre.github.io/data/geoTutorials/world-110m.json",
                "format": {
                    "feature": "countries1",
                    "type": "topojson"
                }
            }
        },
        {
            "mark": {
                "strokeWidth": 0.3,
                "type": "geoshape",
                "filled": false
            },
            "data": {
                "graticule": {
                    "stepMinor": [
                        5,
                        5
                    ]
                }
            }
        }
    ]
}