Convert Square Arcminute to Spat
Convert square arcminutes to spats by entering a value below.
How to Convert Square Arcminutes to Spats
The square arcminute and spat are both units of solid angle. 1 spat equals 148510748.15 square arcminutes. This means to convert square arcminutes to spats, you divide by 148510748.15.
Formula
Step-by-Step Example
Convert 5 arcmin² to spats:
We need to convert square arcminutes to spats
Since 1 sp = 148510748.15 arcmin², divide by 148510748.15
5 ÷ 148510748.15 = 3.3667596874e-8
5 arcmin² = 3.3667596874e-8 sp
Square Arcminute to Spat Conversion Table
Quick reference table for common square arcminute to spat conversions. Click any value for detailed calculation.
| Square Arcminutes (arcmin²) | Spats (sp) |
|---|---|
| 0.1 arcmin² | 6.7335193748e-10 sp |
| 0.5 arcmin² | 3.3667596874e-9 sp |
| 1 arcmin² | 6.7335193748e-9 sp |
| 2 arcmin² | 1.346703875e-8 sp |
| 5 arcmin² | 3.3667596874e-8 sp |
| 10 arcmin² | 6.7335193748e-8 sp |
| 25 arcmin² | 1.6833798437e-7 sp |
| 50 arcmin² | 3.3667596874e-7 sp |
| 100 arcmin² | 6.7335193748e-7 sp |
About These Units
Square Arcminute (arcmin²)
A square arcminute equals (1/60)² of a square degree or about 8.46×10⁻⁸ steradians. One square degree = 3,600 square arcminutes. Used for small astronomical fields: nebula sizes, galaxy images, and detector pixel scales. Full Moon ≈ 720 arcmin².
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.
Frequently Asked Questions
How do I convert square arcminutes to spats?
To convert square arcminutes to spats, divide the value by 148510748.15. For example, 10 arcmin² = 6.7335193748e-8 sp.
How many spats are in 1 square arcminute?
1 square arcminute equals 6.7335193748e-9 spats.
What is the formula for square arcminutes to spats?
The formula is: sp = arcmin² ÷ 148510748.15.