Planetary Solar System
The Solar System is the collection of the Sun and all objects gravitationally bound to it, including planets, moons, and smaller bodies.
How big is it?
60.22 AU across
Diameter · rounded reference
A little perspective
About twice the distance of Neptune’s orbital distance.
Neptune’s orbital distance: Neptune’s orbital distance is the average separation between Neptune and the Sun.
Measurements, assumptions & sources +
Planetary Solar System
A schematic diameter spanning Neptune’s orbit. The Solar System also includes much more distant bodies. The illustration is a boundary diagram; dots identify objects or regions and do not depict their physical diameters.
Defined examples — our methodology
The marked diameter is calibrated. Unmeasured illustration details are representative.
Neptune’s orbital distance
A rounded 30.11 AU semi-major-axis reference, not today’s distance.
Defined examples — our methodology
The marked distance is calibrated. Unmeasured illustration details are representative.
Change your perspective
Put it next to…
Choose a suggestion to redraw the comparison, or open its page to learn what it is.
Why this measurement?
Why we use 60.22 AU
For comparison, this page uses diameter. This is labelled rounded reference: an explicit comparison model rather than a claim that every example has the same value.
A schematic diameter spanning Neptune’s orbit. The Solar System also includes much more distant bodies. The illustration is a boundary diagram; dots identify objects or regions and do not depict their physical diameters.
The marked horizontal span follows the named feature; transparent margins and unmeasured details do not alter it. How calibrated comparisons work →
Recorded properties
Planetary Solar System dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 60.22 AU | Not recorded | rounded reference |
Around this scale
Go smaller. Go bigger.
These links use compatible length records, ordered around the selected value.
Nearest lower value · SpaceKuiper Belt outer orbit50 AUThe Kuiper Belt is a region of the Solar System beyond Neptune containing many icy bodies and dwarf planets.
Around the same scale · SpaceNeptune’s orbital distance30.11 AUNeptune’s orbital distance is the average separation between Neptune and the Sun.
Nearest higher value · SpaceOort Cloud3.163 lyThe Oort Cloud is a distant, roughly spherical shell of icy objects believed to surround the Solar System and supply long-period comets.Sources and method
Want to check the number?
The source records and measurement method remain available for inspection.
More ways to see it
Curated comparisons
There’s always another scale
Follow your curiosity.
SpaceEarth–Sun distance1 AUThe Earth–Sun distance, or astronomical unit, is the standard measure of separation between Earth and the Sun used in astronomy.
SpaceMilky Way30.66 kpcThe Milky Way is a spiral galaxy containing hundreds of billions of stars, including our Solar System.
SpaceObservable universe28.21 GpcThe observable universe is the region from which light or other signals have had time to reach us since the early universe.SpaceNeptune’s orbital distance30.11 AUNeptune’s orbital distance is the average separation between Neptune and the Sun.SpaceKuiper Belt outer orbit50 AUThe Kuiper Belt is a region of the Solar System beyond Neptune containing many icy bodies and dwarf planets.
SpaceBetelgeuse6.511 AUBetelgeuse is a red supergiant star in the constellation Orion that changes in brightness over time.SpaceRed giant0.465 AUA red giant is a star that has expanded and cooled after exhausting the hydrogen in its core.SpaceDistance to Proxima Centauri4.25 lyThis is the distance from the Sun to Proxima Centauri, the closest known star to our Solar System.