RCW 164 is an emission nebula (H II region) in Scutum
RCW 164 (LBN 66) is an emission nebula (H II region) in the constellation Scutum . spans 10′. It is a telescope object, 6 inches or larger, and it is highest in the evening sky in August.
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 164 from Sinistra
Sinistra
RCW 164
SCUTUM
RCW 164 lies 8.3° southeast of Sinistra , the magnitude 3.3 star. A fist held at arm's length covers about 10°.
RCW 164 is highest in the evening in August
JAN
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60°N
JAN at 60°N: -41° high at 9 pm FEB at 60°N: -45° high at 9 pm MAR at 60°N: -39° high at 9 pm APR at 60°N: -27° high at 9 pm MAY at 60°N: -12° high at 9 pm JUN at 60°N: 2° high at 9 pm JUL at 60°N: 12° high at 9 pm AUG at 60°N: 15° high at 9 pm SEP at 60°N: 11° high at 9 pm OCT at 60°N: 0° high at 9 pm NOV at 60°N: -14° high at 9 pm DEC at 60°N: -29° high at 9 pm 50°N
JAN at 50°N: -49° high at 9 pm FEB at 50°N: -55° high at 9 pm MAR at 50°N: -47° high at 9 pm APR at 50°N: -29° high at 9 pm MAY at 50°N: -10° high at 9 pm JUN at 50°N: 8° high at 9 pm JUL at 50°N: 21° high at 9 pm AUG at 50°N: 25° high at 9 pm SEP at 50°N: 19° high at 9 pm OCT at 50°N: 5° high at 9 pm NOV at 50°N: -13° high at 9 pm DEC at 50°N: -32° high at 9 pm 40°N
JAN at 40°N: -56° high at 9 pm FEB at 40°N: -65° high at 9 pm MAR at 40°N: -53° 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: 13° high at 9 pm JUL at 40°N: 29° high at 9 pm AUG at 40°N: 35° high at 9 pm SEP at 40°N: 27° high at 9 pm OCT at 40°N: 10° high at 9 pm NOV at 40°N: -11° high at 9 pm DEC at 40°N: -34° high at 9 pm 30°N
JAN at 30°N: -61° high at 9 pm FEB at 30°N: -74° high at 9 pm MAR at 30°N: -58° high at 9 pm APR at 30°N: -32° high at 9 pm MAY at 30°N: -6° high at 9 pm JUN at 30°N: 18° high at 9 pm JUL at 30°N: 37° high at 9 pm AUG at 30°N: 45° high at 9 pm SEP at 30°N: 35° high at 9 pm OCT at 30°N: 15° high at 9 pm NOV at 30°N: -10° high at 9 pm DEC at 30°N: -35° high at 9 pm 20°N
JAN at 20°N: -64° high at 9 pm FEB at 20°N: -84° high at 9 pm MAR at 20°N: -60° high at 9 pm APR at 20°N: -31° high at 9 pm MAY at 20°N: -4° high at 9 pm JUN at 20°N: 23° high at 9 pm JUL at 20°N: 45° high at 9 pm AUG at 20°N: 55° high at 9 pm SEP at 20°N: 43° high at 9 pm OCT at 20°N: 20° high at 9 pm NOV at 20°N: -7° high at 9 pm DEC at 20°N: -35° high at 9 pm 10°N
JAN at 10°N: -63° high at 9 pm FEB at 10°N: -84° high at 9 pm MAR at 10°N: -59° high at 9 pm APR at 10°N: -30° high at 9 pm MAY at 10°N: -1° high at 9 pm JUN at 10°N: 27° high at 9 pm JUL at 10°N: 52° high at 9 pm AUG at 10°N: 65° high at 9 pm SEP at 10°N: 49° high at 9 pm OCT at 10°N: 24° high at 9 pm NOV at 10°N: -5° high at 9 pm DEC at 10°N: -34° high at 9 pm 0°
JAN at 0°: -60° high at 9 pm FEB at 0°: -75° high at 9 pm MAR at 0°: -56° high at 9 pm APR at 0°: -27° high at 9 pm MAY at 0°: 1° high at 9 pm JUN at 0°: 31° high at 9 pm JUL at 0°: 58° high at 9 pm AUG at 0°: 75° high at 9 pm SEP at 0°: 55° high at 9 pm OCT at 0°: 27° high at 9 pm NOV at 0°: -3° high at 9 pm DEC at 0°: -31° high at 9 pm 10°S
JAN at 10°S: -54° high at 9 pm FEB at 10°S: -65° high at 9 pm MAR at 10°S: -50° high at 9 pm APR at 10°S: -24° high at 9 pm MAY at 10°S: 4° high at 9 pm JUN at 10°S: 33° high at 9 pm JUL at 10°S: 62° high at 9 pm AUG at 10°S: 85° high at 9 pm SEP at 10°S: 58° high at 9 pm OCT at 10°S: 29° high at 9 pm NOV at 10°S: -0° high at 9 pm DEC at 10°S: -28° high at 9 pm 20°S
JAN at 20°S: -46° high at 9 pm FEB at 20°S: -55° high at 9 pm MAR at 20°S: -44° high at 9 pm APR at 20°S: -20° high at 9 pm MAY at 20°S: 6° high at 9 pm JUN at 20°S: 35° high at 9 pm JUL at 20°S: 62° high at 9 pm AUG at 20°S: 84° high at 9 pm SEP at 20°S: 59° high at 9 pm OCT at 20°S: 31° high at 9 pm NOV at 20°S: 3° high at 9 pm DEC at 20°S: -23° high at 9 pm 30°S
JAN at 30°S: -38° high at 9 pm FEB at 30°S: -45° high at 9 pm MAR at 30°S: -36° high at 9 pm APR at 30°S: -16° high at 9 pm MAY at 30°S: 8° high at 9 pm JUN at 30°S: 35° high at 9 pm JUL at 30°S: 60° high at 9 pm AUG at 30°S: 75° high at 9 pm SEP at 30°S: 56° high at 9 pm OCT at 30°S: 31° high at 9 pm NOV at 30°S: 5° high at 9 pm DEC at 30°S: -19° high at 9 pm 40°S
JAN at 40°S: -30° high at 9 pm FEB at 40°S: -35° high at 9 pm MAR at 40°S: -28° high at 9 pm APR at 40°S: -11° high at 9 pm MAY at 40°S: 10° high at 9 pm JUN at 40°S: 34° high at 9 pm JUL at 40°S: 55° high at 9 pm AUG at 40°S: 65° high at 9 pm SEP at 40°S: 52° high at 9 pm OCT at 40°S: 31° high at 9 pm NOV at 40°S: 7° 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 75°N, and never sets south of 75°S.
The distance to RCW 164 is not well measured
Objects within 6° of RCW 164
RCW 163, emission nebula (H II region), 1.1° RCW 161, emission nebula (H II region), 1.3° RCW 159, emission nebula (H II region), 1.8° M17 Omega Nebula, diffuse nebula, 1.9° M16 Eagle Nebula, emission nebula, 2.0° NGC 6645, open cluster, 2.6° M18, open cluster, 2.7° RCW 157, emission nebula (H II region), 2.9°
RCW 164 catalog data
Field Value
Designations LBN 66 Type emission nebula (H II region) Constellation Scutum Right ascension (J2000) 18h 26.0m Declination (J2000) -14° 48′ Apparent size 10′ Best month August Best with Telescope RCW number RCW 164
