TOTAL LUNAR ECLIPSE OF FEBRUARY 20-21, 2008
VISUAL BRIGHTNESS
ESTIMATES
Observer |
Brazilian City (State) |
Danjon Number (L) |
Total
Magnitude of the Moon at Mid-Totality |
Carlos A. Adib |
Tramandaí (RS) |
3.0±0.5 |
- |
Adriano Aubert S. Barros |
Maceió (AL) |
3.0±0.3 |
-2.9±0.3 |
Moshe
Bain |
São Paulo (SP) |
3.0±0.5 |
- |
Saulo M. Filho |
Fortaleza (CE) |
3.5±0.5 |
- |
Tasso A. J. Napoleão |
São Paulo (SP) |
3.2±0.3 |
- |
Willian C. Souza |
São Paulo (SP) |
2.5±0.5 |
-2.4±0.6 (cloud interference) |
Mean
Mid-Totality Danjon Number (L) |
3.03±0.13 |
-2.6±0.5* |
|
Mean
Magnitude of the Moon at Mid-Totality ** |
-2.8±0.3** |
||
*According
to the author`s correlation: Mag
= 4.2 - 3L + (L/2)2 |
|||
**Refers
to mean value weighted on square of errors. |