en.wikipedia.org/wiki/Gamma_Cassiopeiae
1 correction found
2.39 (varies by±0.01)
Gamma Cassiopeiae’s V-band brightness varies by far more than ±0.01 mag. The AAVSO’s Variable Star Index lists a V-magnitude range of 1.6 to 3.0, with even its quiescent state around 2.11–2.21.
Full reasoning
The claim understates Gamma Cassiopeiae’s variability.
The American Association of Variable Star Observers (AAVSO) Variable Star Index entry for gam Cas gives a V-band magnitude range of 1.6–3.0. In the same entry, the remarks note a quieter interval around V = 2.11–2.21, which is still much larger than a total variability of only ±0.01 mag.
So the statement 2.39 (varies by±0.01) is not accurate as an unqualified description of the star’s V-band variability.
1 source
- VSX : Detail for gam Cas
Variability type GCAS ... Mag. range 1.6 - 3 V ... Remarks: Quiescence around V= 2.11-2.21 (AAVSO data).