Star cluster with a nebula · Cygnus

IC 5146 Cocoon Nebula

Also known as: C19, LBN 424

mag 7.210′ across

About

IC 5146, the Cocoon Nebula, is a star cluster with a nebula of magnitude 7.2 in Cygnus, about 10′ across.

IC 5146 is in the constellation Cygnus.
Best evenings: around early October it is highest at about 9 pm (10 pm in summer time); a month earlier, two hours later.
Where on Earth: it is seen well, at least 10° up, from north of 33° S.

When it rises and sets tonight, how high it climbs and how much the Moon gets in the way are worked out in your browser for your place.

EyesNot visible to the naked eye.
Binoculars (10×50)A faint glow from a dark site; a nebula filter helps.
Telescope (6–8 inch)A faint glow — a UHC or OIII filter and a dark sky make the difference.

For a dark country sky with no Moon. From a city, faint galaxies and nebulae can disappear completely.

Designations	IC 5146, C19, LBN 424
Type	Star cluster with a nebula
Magnitude	7.2The smaller the number, the brighter.
Apparent size	10′ × 10′the full Moon is 31′ across
Constellation	Cygnus
Right ascension (J2000)	21h 53m 28.8s
Declination (J2000)	+47° 16′ 01″