RCW 104 is an emission nebula (H II region) in Norma
RCW 104 is an emission nebula (H II region) in the constellation Norma . spans 20′. It is a telescope object, 6 inches or larger, and it is highest in the evening sky in July.
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 RCW 104 from ζ Ara
ζ Ara
RCW 104
NORMA
RCW 104 lies 6.8° northwest of ζ Ara , the magnitude 3.1 star. Three fingers held at arm's length cover about 5°.
RCW 104 is highest in the evening in July
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
60°N
JAN at 60°N: -81° high at 9 pm FEB at 60°N: -69° high at 9 pm MAR at 60°N: -56° high at 9 pm APR at 60°N: -42° high at 9 pm MAY at 60°N: -31° high at 9 pm JUN at 60°N: -24° high at 9 pm JUL at 60°N: -22° high at 9 pm AUG at 60°N: -25° high at 9 pm SEP at 60°N: -32° high at 9 pm OCT at 60°N: -44° high at 9 pm NOV at 60°N: -58° high at 9 pm DEC at 60°N: -73° high at 9 pm 50°N
JAN at 50°N: -87° high at 9 pm FEB at 50°N: -69° high at 9 pm MAR at 50°N: -52° high at 9 pm APR at 50°N: -36° high at 9 pm MAY at 50°N: -23° high at 9 pm JUN at 50°N: -14° high at 9 pm JUL at 50°N: -12° high at 9 pm AUG at 50°N: -15° high at 9 pm SEP at 50°N: -25° high at 9 pm OCT at 50°N: -38° high at 9 pm NOV at 50°N: -55° high at 9 pm DEC at 50°N: -73° high at 9 pm 40°N
JAN at 40°N: -78° high at 9 pm FEB at 40°N: -64° high at 9 pm MAR at 40°N: -47° high at 9 pm APR at 40°N: -29° high at 9 pm MAY at 40°N: -15° high at 9 pm JUN at 40°N: -5° high at 9 pm JUL at 40°N: -2° high at 9 pm AUG at 40°N: -6° high at 9 pm SEP at 40°N: -17° high at 9 pm OCT at 40°N: -32° high at 9 pm NOV at 40°N: -50° high at 9 pm DEC at 40°N: -68° high at 9 pm 30°N
JAN at 30°N: -68° high at 9 pm FEB at 30°N: -57° high at 9 pm MAR at 30°N: -40° high at 9 pm APR at 30°N: -22° high at 9 pm MAY at 30°N: -6° high at 9 pm JUN at 30°N: 5° high at 9 pm JUL at 30°N: 8° high at 9 pm AUG at 30°N: 4° high at 9 pm SEP at 30°N: -8° high at 9 pm OCT at 30°N: -25° high at 9 pm NOV at 30°N: -43° high at 9 pm DEC at 30°N: -61° high at 9 pm 20°N
JAN at 20°N: -58° high at 9 pm FEB at 20°N: -49° high at 9 pm MAR at 20°N: -33° high at 9 pm APR at 20°N: -14° high at 9 pm MAY at 20°N: 2° high at 9 pm JUN at 20°N: 15° high at 9 pm JUL at 20°N: 18° high at 9 pm AUG at 20°N: 13° high at 9 pm SEP at 20°N: -0° high at 9 pm OCT at 20°N: -17° high at 9 pm NOV at 20°N: -36° high at 9 pm DEC at 20°N: -52° high at 9 pm 10°N
JAN at 10°N: -48° high at 9 pm FEB at 10°N: -40° high at 9 pm MAR at 10°N: -25° high at 9 pm APR at 10°N: -6° high at 9 pm MAY at 10°N: 11° high at 9 pm JUN at 10°N: 24° high at 9 pm JUL at 10°N: 28° high at 9 pm AUG at 10°N: 22° high at 9 pm SEP at 10°N: 8° high at 9 pm OCT at 10°N: -9° high at 9 pm NOV at 10°N: -28° high at 9 pm DEC at 10°N: -43° high at 9 pm 0°
JAN at 0°: -38° high at 9 pm FEB at 0°: -31° high at 9 pm MAR at 0°: -17° high at 9 pm APR at 0°: 1° high at 9 pm MAY at 0°: 19° high at 9 pm JUN at 0°: 33° high at 9 pm JUL at 0°: 38° high at 9 pm AUG at 0°: 32° high at 9 pm SEP at 0°: 16° high at 9 pm OCT at 0°: -2° high at 9 pm NOV at 0°: -20° high at 9 pm DEC at 0°: -34° high at 9 pm 10°S
JAN at 10°S: -28° high at 9 pm FEB at 10°S: -22° high at 9 pm MAR at 10°S: -9° high at 9 pm APR at 10°S: 9° high at 9 pm MAY at 10°S: 27° high at 9 pm JUN at 10°S: 43° high at 9 pm JUL at 10°S: 48° high at 9 pm AUG at 10°S: 41° high at 9 pm SEP at 10°S: 24° high at 9 pm OCT at 10°S: 6° high at 9 pm NOV at 10°S: -12° high at 9 pm DEC at 10°S: -24° high at 9 pm 20°S
JAN at 20°S: -18° high at 9 pm FEB at 20°S: -12° high at 9 pm MAR at 20°S: -1° high at 9 pm APR at 20°S: 17° high at 9 pm MAY at 20°S: 35° high at 9 pm JUN at 20°S: 52° high at 9 pm JUL at 20°S: 58° high at 9 pm AUG at 20°S: 50° high at 9 pm SEP at 20°S: 32° high at 9 pm OCT at 20°S: 14° high at 9 pm NOV at 20°S: -3° high at 9 pm DEC at 20°S: -15° high at 9 pm 30°S
JAN at 30°S: -8° high at 9 pm FEB at 30°S: -3° high at 9 pm MAR at 30°S: 8° high at 9 pm APR at 30°S: 24° high at 9 pm MAY at 30°S: 43° high at 9 pm JUN at 30°S: 60° high at 9 pm JUL at 30°S: 68° high at 9 pm AUG at 30°S: 58° high at 9 pm SEP at 30°S: 39° high at 9 pm OCT at 30°S: 21° high at 9 pm NOV at 30°S: 6° high at 9 pm DEC at 30°S: -5° high at 9 pm 40°S
JAN at 40°S: 2° high at 9 pm FEB at 40°S: 6° high at 9 pm MAR at 40°S: 16° high at 9 pm APR at 40°S: 31° high at 9 pm MAY at 40°S: 49° high at 9 pm JUN at 40°S: 68° high at 9 pm JUL at 40°S: 78° high at 9 pm AUG at 40°S: 65° high at 9 pm SEP at 40°S: 46° high at 9 pm OCT at 40°S: 29° high at 9 pm NOV at 40°S: 14° high at 9 pm DEC at 40°S: 5° 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 38°N, and never sets south of 38°S.
The distance to RCW 104 is not well measured
Objects within 6° of RCW 104
RCW 106, emission nebula (H II region), 48′ RCW 102, emission nebula (H II region), 1.0° RCW 103, supernova remnant, 1.1° RCW 105, emission nebula (H II region), 3.3° RCW 107, emission nebula (H II region), 3.8° C82, open cluster, 3.9° RCW 99, emission nebula (H II region), 4.3° RCW 98 Coffee Bean Nebula, emission nebula (H II region), 5.3°
RCW 104 catalog data
Field Value
Type emission nebula (H II region) Constellation Norma Right ascension (J2000) 16h 24.0m Declination (J2000) -51° 31′ Apparent size 20′ Best month July Best with Telescope RCW number RCW 104
