688 B
688 B
| name | constellation | created_by | created_date | updated_by | updated_date |
|---|---|---|---|---|---|
| 61 Cygni | Cyg | editor.cs | 2023-11-05 16:46:21.626691 | editor.cs | 2023-11-05 16:46:21.626695 |
The inconspicuous binary star, distinguishable even with a smaller telescope, is known for being the first one to have its trigonometric parallax measured in 1838 - the distance of this celestial object was determined by the German astronomer Friedrich Wilhelm Bessel (who mainly worked in astrometry - he accurately measured the positions of over 50,000 stars and based on the analysis of their irregular proper motions, he predicted the presence of their long-invisible companions for both Sirius and Procyon in 1844).