1 light-day
173.1 AULength · definition
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Length & distance
Just how long is 1 light-day?
Solar neighbourhood
1 light-day
1 light-day
The quantity is exact as entered.
173.1 AULength
0 - shared origin
Neptune’s orbital distance
Neptune’s orbital distance is the average separation between Neptune and the Sun.
30.11 AUDistance
0 - shared origin
Both rulers start at the same zero and share one linear scale. Artwork keeps its original proportions. A ruler represents the selected distance or a measurement not visible in this view.
A little perspective
1 light-day is about 5.75 times Neptune’s orbital distance.
Measurements, assumptions & sources +
1 light-day
Length: 173.1 AU; definition.
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Neptune’s orbital distance
Distance: 30.11 AU; rounded reference.
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.
Measurement details
Why these numbers?
Compare 1 light-day with Neptune’s orbital distance. The notes below explain how each value was chosen.
Neptune’s orbital distance
30.11 AUDistance · rounded reference
A rounded 30.11 AU semi-major-axis reference, not today’s distance.
- Comparing
- Length ↔ Distance
- Relative size
- 1 light-day is about 5.75 times Neptune’s orbital distance. 1 light-day is approximately 475% greater than Neptune’s orbital distance.
How to read the visual
The diagram uses the recorded measurements. Details outside the marked spans do not set the scale.
- Neptune’s orbital distance: This is a rounded comparison value; check the notes for its source and scope.
This comparison follows the selected length only; other dimensions may differ.
2.5902 × 10¹³ mmetres
8.4981 × 10¹³ ftfeet
1.6095 × 10¹⁰ mimiles
173.14 AUastronomical units
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