Definition availableExact definition Candidate definition
Arcsecond
″cx:arcsec · Plane angle
1 ″ = 1/648000 × π rad.
- Quantity kind
- Plane angle
- SI dimension
1- Allowed roles
- Scalar
- Unit system / convention
- Accepted with SI
- Registry code
arcsec
Scope and distinctions
Second of plane angle, not an elapsed time second.
Available operations
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Verification scope
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Definition sources
- BIPM — The International System of Units (SI)
9th edition, version 4.01, June 2026
Table 8: second of plane angle = minute/60
Source checked:Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.
Definition and registry versions
- Definition revision
- 1.0.0
- Registry snapshot
- 0.3.0-preview.3 · preview
- Definition lifecycle
- candidate
- Definition owner
- core.metrology
- Definition digest
ee3afa01d781bd1fb9dc9b9eca25fb002286b25e998eef6d2cdec59943d0559f- Definition dependency digest
bb352b1779741a1a0c55f6ecf5f7beacf1b2d4fee226adad5ed2ec173da3093b
Digests identify definition content; they are not CVP evidence or production attestations.