Epsilon Lyrae
DSS image of Epsilon Lyrae
Overlaid DSS image of Epsilon Lyrae, 60' x 60' with north at top and west to the right

Aladin viewer for the region around Epsilon Lyrae
Double-Double, ε Lyr
BD+39 3509, WDS J18443+3940, HIP 91919

Type  Multiple Star
Magnitude  4.66
Right Ascension  18h 44' 20.4"  (2000)
Declination  39° 40' 12" N
Constellation  Lyra
Description  Multiple 5.0/6.1 2.6" 5.2/5.3 2.4" 208"
Observing Notes

Andrew Cooper
Jul 14, 2021    Waikoloa, HI (map)
20cm f/6 Newtonian, Cave Astrola @ 76x
Seeing: 6 Transparency: 6 Moon: 27%

The famous Double-Double, at first glance this appears to be a wide 3.5' double star, upon closer inspection each of the two can be further split into a pair of pairs. The southern CD pair (also ε2 Lyr or 5 Lyr) is easier to split despite being slightly closer at 2.4" as both stars are well matched at 5.23 and 5.35 magnitude, the northern AB pair (also ε1 Lyr or 4 Lyr) somewhat harder to split requiring good conditions and decent optics due to the fainter magnitude of εLyr B at 6.06 just over a full magnitude fainter than εLyr A at 4.99, the pair is found 1°40' northeast of Vega
Other Data Sources for Epsilon Lyrae
Associated objects for Epsilon Lyrae
Nearby objects for Epsilon Lyrae
Credits...

Drawings, descriptions, and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission.

A complete list of credits and sources can be found on the about page

Epsilon Lyrae