The sky around Cone Nebula, 3° across, north up NGC 2264 low-power eyepiece, 1° NE 1°
The sky around Cone 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.

NGC 2264 · LBN 911

Cone Nebula

H II region in Monoceros

H II region in Monoceros, 2,280 light-years away.

MONOCEROS

The box shows where Cone Nebula sits in Monoceros.

Constellation
MonocerosMon
Magnitude
3.9visual
Size
3′ × 10′about 2.0 light-years
Distance
2,280 lylight-years
Best month
Februaryat 9 pm
Best with
Naked eye

Cone Nebula is a H II region in Monoceros, 2,280 light-years away

Cone Nebula (NGC 2264, LBN 911) is a H II region in the constellation Monoceros, 2,280 light-years away. It shines at magnitude 3.9 and spans 3′ × 10′ of sky, about 2.0 light-years across. It is visible to the naked eye from a dark site, and it is highest in the evening sky in February.

Nebula: a cloud of gas and dust. Emission nebulae glow on their own, lit by ultraviolet light from hot young stars; reflection nebulae shine by starlight scattered from dust; dark nebulae block the light behind them.

Finding Cone Nebula from Alzirr

Alzirr Cone Nebula MONOCEROS

Cone Nebula lies 3.2° south of Alzirr, the magnitude 3.4 star. Three fingers held at arm's length cover about 5°.

Cone Nebula is highest in the evening in February

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 60°N JAN at 60°N: 35° high at 9 pm FEB at 60°N: 40° high at 9 pm MAR at 60°N: 36° high at 9 pm APR at 60°N: 24° high at 9 pm MAY at 60°N: 10° high at 9 pm JUN at 60°N: -5° high at 9 pm JUL at 60°N: -16° high at 9 pm AUG at 60°N: -20° high at 9 pm SEP at 60°N: -16° high at 9 pm OCT at 60°N: -6° high at 9 pm NOV at 60°N: 8° high at 9 pm DEC at 60°N: 23° high at 9 pm 50°N JAN at 50°N: 43° high at 9 pm FEB at 50°N: 50° high at 9 pm MAR at 50°N: 44° high at 9 pm APR at 50°N: 28° high at 9 pm MAY at 50°N: 9° high at 9 pm JUN at 50°N: -10° high at 9 pm JUL at 50°N: -24° high at 9 pm AUG at 50°N: -30° high at 9 pm SEP at 50°N: -25° high at 9 pm OCT at 50°N: -12° high at 9 pm NOV at 50°N: 7° high at 9 pm DEC at 50°N: 26° high at 9 pm 40°N JAN at 40°N: 49° high at 9 pm FEB at 40°N: 60° high at 9 pm MAR at 40°N: 51° high at 9 pm APR at 40°N: 31° high at 9 pm MAY at 40°N: 8° high at 9 pm JUN at 40°N: -14° high at 9 pm JUL at 40°N: -32° high at 9 pm AUG at 40°N: -40° high at 9 pm SEP at 40°N: -33° high at 9 pm OCT at 40°N: -17° high at 9 pm NOV at 40°N: 6° high at 9 pm DEC at 40°N: 28° high at 9 pm 30°N JAN at 30°N: 55° high at 9 pm FEB at 30°N: 70° high at 9 pm MAR at 30°N: 57° high at 9 pm APR at 30°N: 33° high at 9 pm MAY at 30°N: 7° high at 9 pm JUN at 30°N: -18° high at 9 pm JUL at 30°N: -39° high at 9 pm AUG at 30°N: -50° high at 9 pm SEP at 30°N: -41° high at 9 pm OCT at 30°N: -21° high at 9 pm NOV at 30°N: 4° high at 9 pm DEC at 30°N: 30° high at 9 pm 20°N JAN at 20°N: 59° high at 9 pm FEB at 20°N: 80° high at 9 pm MAR at 20°N: 62° high at 9 pm APR at 20°N: 33° high at 9 pm MAY at 20°N: 6° high at 9 pm JUN at 20°N: -22° high at 9 pm JUL at 20°N: -46° high at 9 pm AUG at 20°N: -60° high at 9 pm SEP at 20°N: -49° high at 9 pm OCT at 20°N: -25° high at 9 pm NOV at 20°N: 2° high at 9 pm DEC at 20°N: 30° high at 9 pm 10°N JAN at 10°N: 60° high at 9 pm FEB at 10°N: 90° high at 9 pm MAR at 10°N: 63° high at 9 pm APR at 10°N: 33° high at 9 pm MAY at 10°N: 4° high at 9 pm JUN at 10°N: -25° high at 9 pm JUL at 10°N: -52° high at 9 pm AUG at 10°N: -70° high at 9 pm SEP at 10°N: -55° high at 9 pm OCT at 10°N: -29° high at 9 pm NOV at 10°N: 1° high at 9 pm DEC at 10°N: 30° high at 9 pm 0° JAN at 0°: 58° high at 9 pm FEB at 0°: 80° high at 9 pm MAR at 0°: 61° high at 9 pm APR at 0°: 31° high at 9 pm MAY at 0°: 2° high at 9 pm JUN at 0°: -28° high at 9 pm JUL at 0°: -56° high at 9 pm AUG at 0°: -80° high at 9 pm SEP at 0°: -60° high at 9 pm OCT at 0°: -31° high at 9 pm NOV at 0°: -1° high at 9 pm DEC at 0°: 28° high at 9 pm 10°S JAN at 10°S: 54° high at 9 pm FEB at 10°S: 70° high at 9 pm MAR at 10°S: 56° high at 9 pm APR at 10°S: 29° high at 9 pm MAY at 10°S: 1° high at 9 pm JUN at 10°S: -29° high at 9 pm JUL at 10°S: -58° high at 9 pm AUG at 10°S: -88° high at 9 pm SEP at 10°S: -62° high at 9 pm OCT at 10°S: -33° high at 9 pm NOV at 10°S: -3° high at 9 pm DEC at 10°S: 26° high at 9 pm 20°S JAN at 20°S: 48° high at 9 pm FEB at 20°S: 60° high at 9 pm MAR at 20°S: 50° high at 9 pm APR at 20°S: 26° high at 9 pm MAY at 20°S: -1° high at 9 pm JUN at 20°S: -30° high at 9 pm JUL at 20°S: -57° high at 9 pm AUG at 20°S: -80° high at 9 pm SEP at 20°S: -60° high at 9 pm OCT at 20°S: -33° high at 9 pm NOV at 20°S: -4° high at 9 pm DEC at 20°S: 23° high at 9 pm 30°S JAN at 30°S: 40° high at 9 pm FEB at 30°S: 50° high at 9 pm MAR at 30°S: 42° high at 9 pm APR at 30°S: 21° high at 9 pm MAY at 30°S: -3° high at 9 pm JUN at 30°S: -29° high at 9 pm JUL at 30°S: -54° high at 9 pm AUG at 30°S: -70° high at 9 pm SEP at 30°S: -56° high at 9 pm OCT at 30°S: -32° high at 9 pm NOV at 30°S: -6° high at 9 pm DEC at 30°S: 19° high at 9 pm 40°S JAN at 40°S: 33° high at 9 pm FEB at 40°S: 40° high at 9 pm MAR at 40°S: 34° high at 9 pm APR at 40°S: 17° high at 9 pm MAY at 40°S: -5° high at 9 pm JUN at 40°S: -28° high at 9 pm JUL at 40°S: -48° high at 9 pm AUG at 40°S: -60° high at 9 pm SEP at 40°S: -50° high at 9 pm OCT at 40°S: -30° high at 9 pm NOV at 40°S: -7° high at 9 pm DEC at 40°S: 14° 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 northern hemisphere and south to about 80°S.

Cone Nebula is 2,280 light-years away

The light seen from Cone Nebula tonight left it about 2,280 years ago. It ranks 41 of 124 by distance among the nebulae on Go Astronomy. Distance source: Gaia DR3, Hunt and Reffert 2023.

Objects within 6° of Cone Nebula

Cone Nebula catalog data

FieldValue
DesignationsNGC 2264, LBN 911
TypeH II region
ConstellationMonoceros
Right ascension (J2000)06h 41.0m
Declination (J2000)+09° 54′
Magnitude3.9
Apparent size3′ × 10′
True size2.0 light-years
Distance2,280 light-years (Gaia DR3, Hunt and Reffert 2023)
Best monthFebruary
Best withNaked eye