Light day: Difference between revisions
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===Distances in Light days=== | ===Distances in Light days=== | ||
* the maximum distance between [[sun]] and [[Sedna]]<ref>2003 VB12, 90377</ref> is about 133,593 Mio km or 5.1 light days | |||
===Notes=== | ===Notes=== | ||
Revision as of 12:59, 15 October 2007
The light day is the distance that the light travels in vacuum in one day and so is a unit of distance.
Similar units are the light second, light minute, light hour, light week, light month, light year.
numerical value
As opposed to the light year, whose value more or less depends on the definition of year, the value of the light hour is defined exactly.
- velocity of light in vacuum: 299,792,458 m/s [1] (meters/second)
- 1 day = 24 hour = 1440 minutes = 86400 seconds
- 1 light day = 25,902,068,371,200 m = 2.5902067 * 1013m
Comparison to other Units
- 1 light day = 25,902,068,371.200 km = 2.5902068 * 1010 km
- 1 light day = 16,094,799,105.225 mi[2] = 1.6094799 * 1010 mi
- 1 light day = 84,980,539,275,590.551 ft[3] = 8.498053913 ft
- 1 light day = 28,326,846,425,196.850 yd [4] = 2.8326846 * 1013 yd
Distances in Light days
Notes