The sky around Saturn Nebula, 3° across, north up low-power eyepiece, 1° NE 1°
The sky around Saturn Nebula at true scale, north up and east left, with stars to magnitude 8. The circles show the field of a low-power eyepiece and of 10×50 binoculars.

Caldwell 55 · NGC 7009 · Herschel 400 no. 377

Saturn Nebula

Planetary nebula in Aquarius

Bright green oval with faint extensions on each side, like Saturn's rings, at high power.

AQUARIUS

The box shows where Saturn Nebula sits in Aquarius.

Constellation
AquariusAqr
Magnitude
8.0visual
Size
42″ × 30″about 0.8 light-years
Distance
3,760 lylight-years
Best month
Septemberat 9 pm
Best with
Small telescope

Saturn Nebula is a planetary nebula in Aquarius, 3,760 light-years away

Saturn Nebula (Caldwell 55, NGC 7009, Herschel 400 no. 377) is a planetary nebula in the constellation Aquarius, 3,760 light-years away. It shines at magnitude 8.0 and spans 42″ × 30″ of sky, about 0.8 light-years across. It is best in a small telescope, 4 to 6 inches, and it is highest in the evening sky in September.

Planetary nebula: a shell of gas thrown off by a dying Sun-like star and lit by the hot core left behind, which becomes a white dwarf. The name comes from their small, round, planet-like look in early telescopes.

Finding Saturn Nebula from Sadalsuud

Sadalsuud C55 AQUARIUS

Saturn Nebula lies 8.9° southwest of Sadalsuud, the magnitude 2.9 star. A fist held at arm's length covers about 10°.

Saturn Nebula is highest in the evening in September

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 60°N JAN at 60°N: -21° high at 9 pm FEB at 60°N: -35° high at 9 pm MAR at 60°N: -41° high at 9 pm APR at 60°N: -39° high at 9 pm MAY at 60°N: -28° high at 9 pm JUN at 60°N: -14° high at 9 pm JUL at 60°N: 1° high at 9 pm AUG at 60°N: 13° high at 9 pm SEP at 60°N: 18° high at 9 pm OCT at 60°N: 16° high at 9 pm NOV at 60°N: 7° high at 9 pm DEC at 60°N: -6° high at 9 pm 50°N JAN at 50°N: -24° high at 9 pm FEB at 50°N: -41° high at 9 pm MAR at 50°N: -51° high at 9 pm APR at 50°N: -47° high at 9 pm MAY at 50°N: -33° high at 9 pm JUN at 50°N: -14° high at 9 pm JUL at 50°N: 5° high at 9 pm AUG at 50°N: 20° high at 9 pm SEP at 50°N: 28° high at 9 pm OCT at 50°N: 26° high at 9 pm NOV at 50°N: 13° high at 9 pm DEC at 50°N: -4° high at 9 pm 40°N JAN at 40°N: -25° high at 9 pm FEB at 40°N: -47° high at 9 pm MAR at 40°N: -60° high at 9 pm APR at 40°N: -55° high at 9 pm MAY at 40°N: -36° high at 9 pm JUN at 40°N: -13° high at 9 pm JUL at 40°N: 9° high at 9 pm AUG at 40°N: 28° high at 9 pm SEP at 40°N: 38° high at 9 pm OCT at 40°N: 35° high at 9 pm NOV at 40°N: 19° high at 9 pm DEC at 40°N: -2° high at 9 pm 30°N JAN at 30°N: -26° high at 9 pm FEB at 30°N: -52° high at 9 pm MAR at 30°N: -70° high at 9 pm APR at 30°N: -62° high at 9 pm MAY at 30°N: -39° high at 9 pm JUN at 30°N: -12° high at 9 pm JUL at 30°N: 13° high at 9 pm AUG at 30°N: 35° high at 9 pm SEP at 30°N: 48° high at 9 pm OCT at 30°N: 43° high at 9 pm NOV at 30°N: 24° high at 9 pm DEC at 30°N: 1° high at 9 pm 20°N JAN at 20°N: -26° high at 9 pm FEB at 20°N: -54° high at 9 pm MAR at 20°N: -78° high at 9 pm APR at 20°N: -67° high at 9 pm MAY at 20°N: -40° high at 9 pm JUN at 20°N: -11° high at 9 pm JUL at 20°N: 16° high at 9 pm AUG at 20°N: 42° high at 9 pm SEP at 20°N: 58° high at 9 pm OCT at 20°N: 52° high at 9 pm NOV at 20°N: 29° high at 9 pm DEC at 20°N: 3° high at 9 pm 10°N JAN at 10°N: -25° high at 9 pm FEB at 10°N: -55° high at 9 pm MAR at 10°N: -82° high at 9 pm APR at 10°N: -68° high at 9 pm MAY at 10°N: -39° high at 9 pm JUN at 10°N: -9° high at 9 pm JUL at 10°N: 19° high at 9 pm AUG at 10°N: 47° high at 9 pm SEP at 10°N: 68° high at 9 pm OCT at 10°N: 59° high at 9 pm NOV at 10°N: 33° high at 9 pm DEC at 10°N: 5° high at 9 pm 0° JAN at 0°: -23° high at 9 pm FEB at 0°: -53° high at 9 pm MAR at 0°: -76° high at 9 pm APR at 0°: -65° high at 9 pm MAY at 0°: -37° high at 9 pm JUN at 0°: -7° high at 9 pm JUL at 0°: 21° high at 9 pm AUG at 0°: 51° high at 9 pm SEP at 0°: 77° high at 9 pm OCT at 0°: 65° high at 9 pm NOV at 0°: 36° high at 9 pm DEC at 0°: 7° high at 9 pm 10°S JAN at 10°S: -21° high at 9 pm FEB at 10°S: -48° high at 9 pm MAR at 10°S: -67° high at 9 pm APR at 10°S: -59° high at 9 pm MAY at 10°S: -34° high at 9 pm JUN at 10°S: -5° high at 9 pm JUL at 10°S: 23° high at 9 pm AUG at 10°S: 53° high at 9 pm SEP at 10°S: 83° high at 9 pm OCT at 10°S: 68° high at 9 pm NOV at 10°S: 38° high at 9 pm DEC at 10°S: 9° high at 9 pm 20°S JAN at 20°S: -17° high at 9 pm FEB at 20°S: -43° high at 9 pm MAR at 20°S: -58° high at 9 pm APR at 20°S: -52° high at 9 pm MAY at 20°S: -30° high at 9 pm JUN at 20°S: -3° high at 9 pm JUL at 20°S: 24° high at 9 pm AUG at 20°S: 53° high at 9 pm SEP at 20°S: 79° high at 9 pm OCT at 20°S: 67° high at 9 pm NOV at 20°S: 38° high at 9 pm DEC at 20°S: 11° high at 9 pm 30°S JAN at 30°S: -14° high at 9 pm FEB at 30°S: -36° high at 9 pm MAR at 30°S: -48° high at 9 pm APR at 30°S: -43° high at 9 pm MAY at 30°S: -25° high at 9 pm JUN at 30°S: -1° high at 9 pm JUL at 30°S: 25° high at 9 pm AUG at 30°S: 51° high at 9 pm SEP at 30°S: 70° high at 9 pm OCT at 30°S: 62° high at 9 pm NOV at 30°S: 37° high at 9 pm DEC at 30°S: 12° high at 9 pm 40°S JAN at 40°S: -10° high at 9 pm FEB at 40°S: -29° high at 9 pm MAR at 40°S: -38° high at 9 pm APR at 40°S: -35° high at 9 pm MAY at 40°S: -20° high at 9 pm JUN at 40°S: 2° high at 9 pm JUL at 40°S: 24° high at 9 pm AUG at 40°S: 46° high at 9 pm SEP at 40°S: 61° high at 9 pm OCT at 40°S: 55° high at 9 pm NOV at 40°S: 35° high at 9 pm DEC at 40°S: 13° high at 9 pm below horizon low 20-40° 40-60° overhead-ish

The chart gives its height above the horizon at 9 pm through the year, from 60°N to 40°S. It can be seen from the whole southern hemisphere and north to about 79°N, and never sets south of 79°S.

Saturn Nebula is 3,760 light-years away

The light seen from Saturn Nebula tonight left it about 3,760 years ago. It ranks 26 of 109 by distance among the 109 Caldwell objects. Distance source: Gaia DR2 parallax, Schonberner & Steffen 2019.

Objects within 6° of Saturn Nebula

Saturn Nebula catalog data

FieldValue
DesignationsCaldwell 55, NGC 7009, Herschel 400 no. 377
Typeplanetary nebula
ConstellationAquarius
Right ascension (J2000)21h 04.2m
Declination (J2000)-11° 22′
Magnitude8.0
Apparent size42″ × 30″
True size0.8 light-years
Distance3,760 light-years (Gaia DR2 parallax, Schonberner & Steffen 2019)
Best monthSeptember
Best withSmall telescope
Herschel 400 number377