Solar System Model
Solar System Model
| Body | Body Diam (km) |
Body Diam (in) |
Body Diam (mm) |
Orbit radius (km) |
Scaled orbit radius (ft & in) |
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| Sun | 1391900 |
600 |
15240 |
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| Mercury | 4866 | 2.0975 | 53.2 | 57950000 | 2,081 ft | 8.24 in | |
| Venus | 12106 | 5.2184 | 132.5 | 108110000 | 3,883 ft | 6.48 in | |
| Earth | 12742 | 5.4926 | 139.5 | 149570000 | 5,372 ft | 10.45 in | |
| Mars | 6760 | 2.914 | 74 | 227840000 | 8,184 ft | 5.95 in | |
| Jupiter | 142984 | 61.6354 | 1565.5 | 778140000 | 27,952 ft | 5.26 in | |
| Saturn | 116438 | 50.1923 | 1274.8 | 1427000000 | 51,260 ft | 10.39 in | |
| Uranus | 46940 | 20.2342 | 513.9 | 2870300000 | 103,107 ft | 3.16 in | |
| Neptune | 45432 | 19.5841 | 497.4 | 4499900000 | 161,645 ft | 11.41 in | |
| Pluto | 2274 | 0.98 | 24.8 | 5913000000 | 212,407 ft | 6 in | |
A mile is 5,280 ft. The diamter of Earth is 7,926.41 miles on the equator. It is slightly smaller from pole to pole (7,901miles) thus the earth is a tad wider (25 miles / 41 km) than it is tall, giving it a slight bulge at the equator. This shape is known as an ellipsoid or more properly, geoid (earth-like).
The circumference of the earth at the equator is 24,901.55 miles (40,075.16 kilometers). But, if you measure the earth through the poles the circumference is a bit shorter - 24,859.82 miles (40,008 km).
| Other interesting distances and speeds | |||||||
| Quantity | Real Quantity |
Scaled Quantity (English) |
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| Speed of light |
299792 km/sec | 129.229 in/sec | |||||
| Light year |
9.46051E+12 km | 64,363.9 mi | |||||
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| Distances to Stars and Galaxies | |||||||
| To Alpha Centauri | 4.03964E+13 km | 274,834.1 mi | |||||
| To Sirius | 8.17388E+13 km | 556,104.3 mi | |||||
| To Deneb | 1.32636E+16 km | 90,238,000.3 mi | |||||
| To Galactic center |
2.62151E+17 km | 1,783,526,496.3 mi | |||||
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| Sizes of Stars | |||||||
| Hottest star (Type 05) |
12527100 km | 450 ft | |||||
| Coolest star (Type M5) |
222704 km | 96 in | |||||
| Red giant (Betelgeuse) |
521962500 km | 18,750 ft | |||||
| White dwarf (Sirius B) |
13919 km | 6 in | |||||
| Neutron star | 20 km | 0.008621 in | |||||
Mercury 2″
Venus 5.2″
Earth 5.4″, moon 1.49″
Mars 2.9″ (3″)
Jupiter 61.6″, IO 1.5″, Europa 1.3″, Ganymede 2.2″, Callistol 2″
Saturn 50.1″, Rhea 1/2″, Drone 1/2″, Tethys 1/2″, Titan 2.2″
Uranus 20.2″, Oberon 1/2″, Titania 1/2″, Umbriel 1/2″, Ariel 1/2″
Neptune 19.5″, Tritan 1.1″
Pluto 1″, Charon 1/2″