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41 lines
993 B
Markdown
41 lines
993 B
Markdown
[**moon-sighting v1.1.1**](../README.md)
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***
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[moon-sighting](../README.md) / YALLOP\_THRESHOLDS
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# Variable: YALLOP\_THRESHOLDS
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> `const` **YALLOP\_THRESHOLDS**: `object`
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Defined in: [types.ts:155](https://github.com/acamarata/moon-sighting/blob/2992dcee216cb24cc74542f6e8d5a6f4f0d16e05/src/types.ts#L155)
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Published q thresholds (Yallop 1997, NAO TN 69):
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A: q > +0.216 — Easily visible to the naked eye
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B: q > -0.014 — Visible under perfect conditions
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C: q > -0.160 — May need optical aid to find; visible to naked eye
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D: q > -0.232 — Optical aid needed; will not be visible to naked eye
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E: q > -0.293 — Not visible even with telescope
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F: q <= -0.293 — Below Danjon limit (Moon too close to Sun)
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## Type Declaration
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### A
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> `readonly` **A**: `0.216` = `0.216`
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### B
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> `readonly` **B**: `-0.014` = `-0.014`
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### C
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> `readonly` **C**: `-0.16` = `-0.16`
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### D
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> `readonly` **D**: `-0.232` = `-0.232`
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### E
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> `readonly` **E**: `-0.293` = `-0.293`
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