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The siriometer is an obsolete astronomical unit of length, defined to be equal to one million astronomical units (au). One siriometer is approximately 149.6 petametres; 4.848 parsecs; 15.81 light-years. The distance from Earth to the star Sirius is then approximately 0.54 siriometers.
Measurement & Art
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unit astronomical use parsec one approximately charlier stellar distances petametres parsecs light-years sirius obsolete length defined equal million units au
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Siriometer | is a | obsolete astronomical unit of length | 0.90 | text |
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