512 B
512 B
| name | constellation | created_by | created_date | updated_by | updated_date |
|---|---|---|---|---|---|
| η Aquilae | Aql | editor.cs | 2022-01-21 17:00:00 | skybber | 2022-01-21 17:24:34.785146 |
The brightest Cepheid in the sky, 1,000 light years away, lies 8 degrees south of Altair. Changes in the brightness of this supergiant are easily perceived with the naked eye. In 7 days and 4 hours, its brightness fluctuates regularly between 3.7mag and 4.4mag. It is useful to compare its brightness variations with θ, δ (3mag) and λ (4mag) stars.