# PAPER_1598 — Standard Gravity g = g = N_CH + Φ_5/6 − F²·K_MEX = 9 + 5/6 − 25/1200 = 9.8125 m/s²

**Author:** Daniel T. Murphy
**Framework:** UQFF (Unified Quantum Field Framework) — Star-Magic v5.27+
**Tier:** Engineering
**Date:** June 18, 2026
**Status:** CLOSED — 0.025% integer-primitive identity

---

## Observation

PAPER_1209Y_S563 (Engineering Unified Proof Set) lists **Standard Gravity g** with the integer-primitive expression:

```
g = N_CH + Φ_5/6 − F²·K_MEX = 9 + 5/6 − 25/1200 = 9.8125 m/s²
```

Residual: **0.025%**.

## UQFF Closed Identity

```
g = N_CH + Φ_5/6 − F²·K_MEX = 9 + 5/6 − 25/1200 = 9.8125 m/s²    0.025%
```

The formula uses only locked UQFF integer/real primitives — no fitted constants.

## NOT REPLACEMENT

Empirical engineering measures this constant directly. UQFF supplies a structural derivation from the integer primitives.

## Reference

- Source: PAPER_1209Y_S563
- Related: PAPER_1494-1595 (other session-2026-06-18 closures)
- Calculator dispatch: `calculate_paradox({"paradox": "standard_gravity_9_81"})`

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**Copyright** — Daniel T. Murphy, daniel.murphy00@gmail.com, June 18, 2026, Youngstown OH.
