LBN 71 is an emission nebula in Serpens, 6,580 light-years away
LBN 71 is an emission nebula in the constellation Serpens , 6,580 light-years away. Lynds rated it brightness class 3 of 6, moderately bright, and color class 3, reddish. It spans 1.3° × 30′ of sky, about 153 light-years across. It is a telescope object under a dark sky; a nebula filter helps, and it is highest in the evening sky in August.
Emission nebula: a cloud of gas, mostly hydrogen, made to glow by the ultraviolet light of hot young stars. It shines in the red light of hydrogen-alpha, and a nebula filter helps it stand out from the sky.
Finding LBN 71 from Sinistra
Sinistra
LBN 71
SERPENS
LBN 71 lies 5.6° southeast of Sinistra , the magnitude 3.3 star. Three fingers held at arm's length cover about 5°.
LBN 71 is highest in the evening in August
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60°N
JAN at 60°N: -39° high at 9 pm FEB at 60°N: -42° high at 9 pm MAR at 60°N: -37° high at 9 pm APR at 60°N: -24° high at 9 pm MAY at 60°N: -9° high at 9 pm JUN at 60°N: 5° high at 9 pm JUL at 60°N: 14° high at 9 pm AUG at 60°N: 17° high at 9 pm SEP at 60°N: 12° high at 9 pm OCT at 60°N: 2° high at 9 pm NOV at 60°N: -13° high at 9 pm DEC at 60°N: -27° high at 9 pm 50°N
JAN at 50°N: -47° high at 9 pm FEB at 50°N: -52° high at 9 pm MAR at 50°N: -44° high at 9 pm APR at 50°N: -26° high at 9 pm MAY at 50°N: -8° high at 9 pm JUN at 50°N: 11° high at 9 pm JUL at 50°N: 23° high at 9 pm AUG at 50°N: 27° high at 9 pm SEP at 50°N: 21° high at 9 pm OCT at 50°N: 6° high at 9 pm NOV at 50°N: -12° high at 9 pm DEC at 50°N: -31° high at 9 pm 40°N
JAN at 40°N: -55° high at 9 pm FEB at 40°N: -62° high at 9 pm MAR at 40°N: -50° high at 9 pm APR at 40°N: -28° high at 9 pm MAY at 40°N: -6° high at 9 pm JUN at 40°N: 16° high at 9 pm JUL at 40°N: 32° high at 9 pm AUG at 40°N: 37° high at 9 pm SEP at 40°N: 29° high at 9 pm OCT at 40°N: 11° 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: -72° high at 9 pm MAR at 30°N: -55° high at 9 pm APR at 30°N: -29° high at 9 pm MAY at 30°N: -4° high at 9 pm JUN at 30°N: 21° high at 9 pm JUL at 30°N: 40° high at 9 pm AUG at 30°N: 47° high at 9 pm SEP at 30°N: 36° 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: -36° high at 9 pm 20°N
JAN at 20°N: -65° high at 9 pm FEB at 20°N: -81° high at 9 pm MAR at 20°N: -57° high at 9 pm APR at 20°N: -29° high at 9 pm MAY at 20°N: -1° high at 9 pm JUN at 20°N: 26° high at 9 pm JUL at 20°N: 48° high at 9 pm AUG at 20°N: 57° high at 9 pm SEP at 20°N: 43° high at 9 pm OCT at 20°N: 19° high at 9 pm NOV at 20°N: -8° high at 9 pm DEC at 20°N: -36° high at 9 pm 10°N
JAN at 10°N: -65° high at 9 pm FEB at 10°N: -84° high at 9 pm MAR at 10°N: -58° high at 9 pm APR at 10°N: -28° high at 9 pm MAY at 10°N: 1° high at 9 pm JUN at 10°N: 30° high at 9 pm JUL at 10°N: 55° high at 9 pm AUG at 10°N: 67° high at 9 pm SEP at 10°N: 49° high at 9 pm OCT at 10°N: 23° high at 9 pm NOV at 10°N: -6° high at 9 pm DEC at 10°N: -35° high at 9 pm 0°
JAN at 0°: -62° high at 9 pm FEB at 0°: -76° high at 9 pm MAR at 0°: -55° high at 9 pm APR at 0°: -26° high at 9 pm MAY at 0°: 3° high at 9 pm JUN at 0°: 33° high at 9 pm JUL at 0°: 61° high at 9 pm AUG at 0°: 77° high at 9 pm SEP at 0°: 54° high at 9 pm OCT at 0°: 25° high at 9 pm NOV at 0°: -4° high at 9 pm DEC at 0°: -33° high at 9 pm 10°S
JAN at 10°S: -56° high at 9 pm FEB at 10°S: -67° high at 9 pm MAR at 10°S: -50° high at 9 pm APR at 10°S: -23° high at 9 pm MAY at 10°S: 5° high at 9 pm JUN at 10°S: 35° high at 9 pm JUL at 10°S: 64° high at 9 pm AUG at 10°S: 86° high at 9 pm SEP at 10°S: 56° high at 9 pm OCT at 10°S: 27° high at 9 pm NOV at 10°S: -2° high at 9 pm DEC at 10°S: -30° high at 9 pm 20°S
JAN at 20°S: -49° high at 9 pm FEB at 20°S: -57° 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: 7° high at 9 pm JUN at 20°S: 36° high at 9 pm JUL at 20°S: 63° high at 9 pm AUG at 20°S: 82° high at 9 pm SEP at 20°S: 56° high at 9 pm OCT at 20°S: 28° high at 9 pm NOV at 20°S: 0° high at 9 pm DEC at 20°S: -26° high at 9 pm 30°S
JAN at 30°S: -41° high at 9 pm FEB at 30°S: -47° high at 9 pm MAR at 30°S: -37° high at 9 pm APR at 30°S: -16° high at 9 pm MAY at 30°S: 9° 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: 72° high at 9 pm SEP at 30°S: 54° high at 9 pm OCT at 30°S: 29° high at 9 pm NOV at 30°S: 2° high at 9 pm DEC at 30°S: -21° high at 9 pm 40°S
JAN at 40°S: -33° high at 9 pm FEB at 40°S: -37° high at 9 pm MAR at 40°S: -29° 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: 54° high at 9 pm AUG at 40°S: 62° high at 9 pm SEP at 40°S: 49° high at 9 pm OCT at 40°S: 28° high at 9 pm NOV at 40°S: 5° high at 9 pm DEC at 40°S: -16° 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 78°N, and never sets south of 78°S.
LBN 71 is 6,580 light-years away
The light seen from LBN 71 tonight left it about 6,580 years ago. Distance source: NGC 6604, Gaia DR3, Hunt and Reffert 2023.
23 Lynds bright nebulae and 56 Lynds dark nebulae lie within 5° of LBN 71
The nearest:
LBN 70, emission nebula, 33′ LBN 72, emission nebula, 33′ LDN 394, dark nebula, 46′ LBN 67 Eagle Nebula, emission nebula, 1.3° LDN 405, dark nebula, 1.4° LBN 68, emission nebula, 1.4° LDN 386, dark nebula, 1.5° LDN 380, dark nebula, 1.8° LDN 406, dark nebula, 1.8° LDN 399, dark nebula, 1.9°
NGC and IC objects in the field that are brighter than magnitude 12.5 or have their own page:
NGC 6604, open cluster, 18′ NGC 6625, open cluster, 1.1° M16 Eagle Nebula, nebula, 1.3° M16 Eagle Nebula, nebula, 1.4° NGC 6631, open cluster, 2.1° NGC 6605, open cluster, 2.6°
LBN 71 catalog data
Field Value
Designations LBN 71 Constellation Serpens Type emission nebula Right ascension (J2000) 18h 18.8m Declination (J2000) -12° 28′ Galactic longitude and latitude 18.13°, +1.42° Brightness class 3 of 6 (moderately bright) Color class 3 of 4 (reddish) Apparent size 1.3° × 30′ True size 153 light-years Distance 6,580 light-years (NGC 6604, Gaia DR3, Hunt and Reffert 2023) Best with Telescope Best month August Catalog page LBN 1 to 500
