LBN 7 is an emission and reflection nebula in Ophiuchus, 370 light-years away
LBN 7 (DG 144) is an emission and reflection nebula in the constellation Ophiuchus , 370 light-years away. Lynds rated it brightness class 6 of 6, the faintest, and color class 4, the reddest, strongest on the red print. It spans 50′ × 10′ of sky, about 5.4 light-years across. It is a faint target for long-exposure photography, and it is highest in the evening sky in July.
Emission and reflection nebula: a cloud where gas glows on its own, lit by the ultraviolet light of hot young stars, next to dust that scatters starlight. Photographs show red emission beside blue reflection.
Finding LBN 7 from Han
Han
LBN 7
OPHIUCHUS
LBN 7 lies 5.3° south of Han , the magnitude 2.5 star. Three fingers held at arm's length cover about 5°.
LBN 7 is highest in the evening in July
JAN
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60°N
JAN at 60°N: -46° high at 9 pm FEB at 60°N: -40° high at 9 pm MAR at 60°N: -29° high at 9 pm APR at 60°N: -14° high at 9 pm MAY at 60°N: 0° high at 9 pm JUN at 60°N: 10° high at 9 pm JUL at 60°N: 14° high at 9 pm AUG at 60°N: 10° high at 9 pm SEP at 60°N: 0° high at 9 pm OCT at 60°N: -14° high at 9 pm NOV at 60°N: -29° high at 9 pm DEC at 60°N: -41° high at 9 pm 50°N
JAN at 50°N: -56° high at 9 pm FEB at 50°N: -47° high at 9 pm MAR at 50°N: -32° high at 9 pm APR at 50°N: -12° high at 9 pm MAY at 50°N: 5° high at 9 pm JUN at 50°N: 19° high at 9 pm JUL at 50°N: 24° high at 9 pm AUG at 50°N: 19° high at 9 pm SEP at 50°N: 5° high at 9 pm OCT at 50°N: -12° high at 9 pm NOV at 50°N: -32° high at 9 pm DEC at 50°N: -48° high at 9 pm 40°N
JAN at 40°N: -66° high at 9 pm FEB at 40°N: -53° high at 9 pm MAR at 40°N: -33° high at 9 pm APR at 40°N: -10° high at 9 pm MAY at 40°N: 11° high at 9 pm JUN at 40°N: 28° high at 9 pm JUL at 40°N: 34° high at 9 pm AUG at 40°N: 28° high at 9 pm SEP at 40°N: 11° high at 9 pm OCT at 40°N: -10° high at 9 pm NOV at 40°N: -33° high at 9 pm DEC at 40°N: -55° high at 9 pm 30°N
JAN at 30°N: -76° high at 9 pm FEB at 30°N: -58° high at 9 pm MAR at 30°N: -34° high at 9 pm APR at 30°N: -8° high at 9 pm MAY at 30°N: 16° high at 9 pm JUN at 30°N: 36° high at 9 pm JUL at 30°N: 44° high at 9 pm AUG at 30°N: 36° high at 9 pm SEP at 30°N: 16° high at 9 pm OCT at 30°N: -8° high at 9 pm NOV at 30°N: -34° high at 9 pm DEC at 30°N: -59° high at 9 pm 20°N
JAN at 20°N: -86° high at 9 pm FEB at 20°N: -60° high at 9 pm MAR at 20°N: -34° high at 9 pm APR at 20°N: -6° high at 9 pm MAY at 20°N: 21° high at 9 pm JUN at 20°N: 44° high at 9 pm JUL at 20°N: 54° high at 9 pm AUG at 20°N: 44° high at 9 pm SEP at 20°N: 21° high at 9 pm OCT at 20°N: -6° high at 9 pm NOV at 20°N: -34° high at 9 pm DEC at 20°N: -61° high at 9 pm 10°N
JAN at 10°N: -84° high at 9 pm FEB at 10°N: -59° high at 9 pm MAR at 10°N: -32° high at 9 pm APR at 10°N: -3° high at 9 pm MAY at 10°N: 25° high at 9 pm JUN at 10°N: 51° high at 9 pm JUL at 10°N: 64° high at 9 pm AUG at 10°N: 51° high at 9 pm SEP at 10°N: 25° high at 9 pm OCT at 10°N: -3° high at 9 pm NOV at 10°N: -32° high at 9 pm DEC at 10°N: -61° high at 9 pm 0°
JAN at 0°: -74° high at 9 pm FEB at 0°: -55° high at 9 pm MAR at 0°: -29° high at 9 pm APR at 0°: -0° high at 9 pm MAY at 0°: 28° high at 9 pm JUN at 0°: 56° high at 9 pm JUL at 0°: 74° high at 9 pm AUG at 0°: 56° high at 9 pm SEP at 0°: 28° high at 9 pm OCT at 0°: -0° high at 9 pm NOV at 0°: -29° high at 9 pm DEC at 0°: -57° high at 9 pm 10°S
JAN at 10°S: -64° high at 9 pm FEB at 10°S: -49° high at 9 pm MAR at 10°S: -26° high at 9 pm APR at 10°S: 3° high at 9 pm MAY at 10°S: 31° high at 9 pm JUN at 10°S: 60° high at 9 pm JUL at 10°S: 84° high at 9 pm AUG at 10°S: 60° high at 9 pm SEP at 10°S: 31° high at 9 pm OCT at 10°S: 3° high at 9 pm NOV at 10°S: -26° high at 9 pm DEC at 10°S: -51° high at 9 pm 20°S
JAN at 20°S: -54° high at 9 pm FEB at 20°S: -43° high at 9 pm MAR at 20°S: -22° high at 9 pm APR at 20°S: 5° high at 9 pm MAY at 20°S: 32° high at 9 pm JUN at 20°S: 61° high at 9 pm JUL at 20°S: 86° high at 9 pm AUG at 20°S: 61° high at 9 pm SEP at 20°S: 32° high at 9 pm OCT at 20°S: 5° high at 9 pm NOV at 20°S: -22° high at 9 pm DEC at 20°S: -44° high at 9 pm 30°S
JAN at 30°S: -44° high at 9 pm FEB at 30°S: -35° high at 9 pm MAR at 30°S: -17° high at 9 pm APR at 30°S: 8° high at 9 pm MAY at 30°S: 33° high at 9 pm JUN at 30°S: 59° high at 9 pm JUL at 30°S: 76° high at 9 pm AUG at 30°S: 59° high at 9 pm SEP at 30°S: 33° high at 9 pm OCT at 30°S: 8° high at 9 pm NOV at 30°S: -17° high at 9 pm DEC at 30°S: -36° high at 9 pm 40°S
JAN at 40°S: -34° high at 9 pm FEB at 40°S: -27° high at 9 pm MAR at 40°S: -12° high at 9 pm APR at 40°S: 10° high at 9 pm MAY at 40°S: 32° high at 9 pm JUN at 40°S: 54° high at 9 pm JUL at 40°S: 66° high at 9 pm AUG at 40°S: 54° high at 9 pm SEP at 40°S: 32° high at 9 pm OCT at 40°S: 10° high at 9 pm NOV at 40°S: -12° high at 9 pm DEC at 40°S: -28° 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 74°N, and never sets south of 74°S.
LBN 7 is 370 light-years away
The light seen from LBN 7 tonight left it about 370 years ago, around 1656 AD. Distance source: Sh2-27, Zeta Oph Hipparcos 112 pc (van Leeuwen 2007, via HYG v4.1).
6 Lynds bright nebulae and 35 Lynds dark nebulae lie within 5° of LBN 7
The nearest:
LDN 43 Cosmic Bat Nebula, dark nebula, 10′ LBN 6, emission nebula, 1.1° LDN 1, dark nebula, 1.2° LDN 83, dark nebula, 1.5° LDN 27, dark nebula, 1.6° LDN 98, dark nebula, 1.9° LDN 105, dark nebula, 1.9° LDN 106, dark nebula, 1.9° LDN 1781, dark nebula, 2.0° LDN 121, dark nebula, 2.3°
NGC and IC objects in the field that are brighter than magnitude 12.5 or have their own page:
LBN 7 catalog data
Field Value
Designations LBN 7, DG 144 Constellation Ophiuchus Type emission and reflection nebula Right ascension (J2000) 16h 33.9m Declination (J2000) -15° 46′ Galactic longitude and latitude 1.27°, +21.09° Brightness class 6 of 6 (the faintest) Color class 4 of 4 (the reddest, strongest on the red print) Apparent size 50′ × 10′ True size 5.4 light-years Distance 370 light-years (Sh2-27, Zeta Oph Hipparcos 112 pc (van Leeuwen 2007, via HYG v4.1)) Best with Camera Best month July Catalog page LBN 1 to 500
