तारकीय तापमान कैलकुलेटर — सूत्र
## Stellar Temperature from Colour
The B-V colour index measures the difference in brightness between blue (B) and visual (V) filters. Bluer (hotter) stars have lower B-V.
### Ballesteros Formula
**T = 4600 × (1/(0.92(B-V)+1.7) + 1/(0.92(B-V)+0.62))** K
The Sun has B-V ≈ 0.65, giving T ≈ 5780 K.
The B-V colour index measures the difference in brightness between blue (B) and visual (V) filters. Bluer (hotter) stars have lower B-V.
### Ballesteros Formula
**T = 4600 × (1/(0.92(B-V)+1.7) + 1/(0.92(B-V)+0.62))** K
The Sun has B-V ≈ 0.65, giving T ≈ 5780 K.
हल किया गया उदाहरण
The Sun: B-V = 0.65.
- 0.92 × 0.65 = 0.598
- 1/(0.598+1.7) + 1/(0.598+0.62) = 1/2.298 + 1/1.218
- = 0.4352 + 0.8210 = 1.2562
- T = 4600 × 1.2562 ≈ 5778 K