SHJ 282 (STT 525): A Multiple System of Orange and Blue in Lyra

If you take a quick look at any list of top astronomical targets in the constellation Lyra, you might notice that this colorful double often gets overlooked. This is understandable because there are so many wonderful objects around it! You have brilliant Vega, the famous “Double-Double” of Epsilon Lryae, the awesome Ring Nebula, the quaint Eta Lyrae (Aladfar), and the other double-double of Struve 2470! Seriously, there’s a whole star party happening up there!

Otto Struve 525 (aka STT 525) is a triple-star system that features a golden primary (Star A) with two companions (stars B & C). Stars A & B are very close together, only separated by 1.8 arcseconds. I could not separate A & B from my location. However, the pale orange primary star has a pretty blue companion (Star C) 45 arcseconds away. Stars A & C make for a pretty orange and blue pair easily split in most scopes. This post on Cloudy Nights provides some photos and discussion on this nice system.

My Observations

Based on my research, I have learned that there is a star that is located very close to the golden primary star that I am currently observing. Unfortunately, the current conditions are not favorable for me to view this star, but I will attempt again with higher magnification. Nonetheless, I am still appreciating the beauty of the golden-orange star beside a blue dimmer star.

Key Stats

Constellation	Lyra
Best Viewing	Summer
Visual Magnitude	+6.1 | +7.6 (stars a&c)
Separation	45.4″
Position Angle	349°
Distance	1169 ly
My Viewing Grade	B+
Designations	SAO 67566

Sources and Notes

The banner illustration was created by the European Southern Observatory (ESO) and is under the Creative Commons Attribution 4.0 International License. Per ESO agreement: Here is the original image on the ESO website.

18549+3358 STT 525 AB (HD 175635). WDS 18549+3358 STT 525 AB (HD 175635). (n.d.). https://www.stelledoppie.it/index2.php?iddoppia=77780

Sketch by Wayne McGraw