Convert Spat to Square Arcsecond
Type the number of spats that you wish to convert to square arcseconds.
How to Convert Spats to Square Arcseconds
The spat and square arcsecond are both units of solid angle. 1 spat equals 534639072429 square arcseconds. This means to convert spats to square arcseconds, you multiply by 534639072429.
Formula
Step-by-Step Example
Convert 5 sp to square arcseconds:
We need to convert spats to square arcseconds
Since 1 sp = 534639072429 arcsec², multiply by 534639072429
5 × 534639072429 = 2.6731953621e12
5 sp = 2.6731953621e12 arcsec²
Spat to Square Arcsecond Conversion Table
Quick reference table for common spat to square arcsecond conversions. Click any value for detailed calculation.
| Spats (sp) | Square Arcseconds (arcsec²) |
|---|---|
| 0.1 sp | 53463907243 arcsec² |
| 0.5 sp | 267319536214 arcsec² |
| 1 sp | 534639072429 arcsec² |
| 2 sp | 1.0692781449e12 arcsec² |
| 5 sp | 2.6731953621e12 arcsec² |
| 10 sp | 5.3463907243e12 arcsec² |
| 25 sp | 1.3365976811e13 arcsec² |
| 50 sp | 2.6731953621e13 arcsec² |
| 100 sp | 5.3463907243e13 arcsec² |
About These Units
Spat (sp)
The spat equals 4π steradians (≈12.566 sr)—the solid angle subtended by a complete sphere as seen from its center. One spat = 41,253 square degrees = 1 full sphere. Used in radiation physics and isotropic source calculations. Rarely used; steradians preferred.
Square Arcsecond (arcsec²)
A square arcsecond equals (1/3600)² of a square degree or about 2.35×10⁻¹¹ steradians. One square arcminute = 3,600 square arcseconds. Measures individual star disks, exoplanet host star separation, and high-resolution imaging pixels.
Frequently Asked Questions
How do I convert spats to square arcseconds?
To convert spats to square arcseconds, multiply the value by 534639072429. For example, 10 sp = 5.3463907243e12 arcsec².
How many square arcseconds are in 1 spat?
1 spat equals 534639072429 square arcseconds.
What is the formula for spats to square arcseconds?
The formula is: arcsec² = sp × 534639072429.