Planetary nebula · Andromeda

NGC 7662 Blue Snowball Nebula

Also known as: C22

mag 8.318″ across

About

NGC 7662, the Blue Snowball Nebula, is a planetary nebula of magnitude 8.3 in Andromeda, about 18″ across.

NGC 7662 is in the constellation Andromeda.
Best evenings: around late 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 37° 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)Looks like a faint star.
Telescope (6–8 inch)Starlike at low power; high power shows a tiny blue-green disc.

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

Designations	NGC 7662, C22, PN G106.5-17.6
Type	Planetary nebula
Magnitude	8.3The smaller the number, the brighter.
Apparent size	18″the full Moon is 31′ across
Surface brightness	≈ 14.3 mag/arcsec²Estimate from the magnitude and size, per square arcsecond.
Constellation	Andromeda
Right ascension (J2000)	23h 25m 53.9s
Declination (J2000)	+42° 32′ 06″