LBN 691 is an emission and reflection nebula in Ursa Major
LBN 691 is an emission and reflection nebula in the constellation Ursa Major . Lynds rated it brightness class 6 of 6, the faintest, and color class 2, bluish. It spans 3° × 2° of sky. It is a faint target for long-exposure photography, and it is highest in the evening sky in April.
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 691 from Dubhe
Dubhe
LBN 691
URSA MAJOR
LBN 691 lies 10.3° northwest of Dubhe , the magnitude 1.8 star. A fist held at arm's length covers about 10°.
LBN 691 is highest in the evening in April
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
60°N
JAN at 60°N: 58° high at 9 pm FEB at 60°N: 70° high at 9 pm MAR at 60°N: 81° high at 9 pm APR at 60°N: 81° high at 9 pm MAY at 60°N: 70° high at 9 pm JUN at 60°N: 58° high at 9 pm JUL at 60°N: 48° high at 9 pm AUG at 60°N: 40° high at 9 pm SEP at 60°N: 36° high at 9 pm OCT at 60°N: 36° high at 9 pm NOV at 60°N: 40° high at 9 pm DEC at 60°N: 47° high at 9 pm 50°N
JAN at 50°N: 50° high at 9 pm FEB at 50°N: 63° high at 9 pm MAR at 50°N: 72° high at 9 pm APR at 50°N: 73° high at 9 pm MAY at 50°N: 63° high at 9 pm JUN at 50°N: 50° high at 9 pm JUL at 50°N: 39° high at 9 pm AUG at 50°N: 31° high at 9 pm SEP at 50°N: 26° high at 9 pm OCT at 50°N: 26° high at 9 pm NOV at 50°N: 31° high at 9 pm DEC at 50°N: 39° high at 9 pm 40°N
JAN at 40°N: 42° high at 9 pm FEB at 40°N: 54° high at 9 pm MAR at 40°N: 63° high at 9 pm APR at 40°N: 63° high at 9 pm MAY at 40°N: 54° high at 9 pm JUN at 40°N: 42° high at 9 pm JUL at 40°N: 31° high at 9 pm AUG at 40°N: 22° high at 9 pm SEP at 40°N: 16° high at 9 pm OCT at 40°N: 16° high at 9 pm NOV at 40°N: 21° high at 9 pm DEC at 40°N: 30° high at 9 pm 30°N
JAN at 30°N: 33° high at 9 pm FEB at 30°N: 45° high at 9 pm MAR at 30°N: 53° high at 9 pm APR at 30°N: 53° high at 9 pm MAY at 30°N: 46° high at 9 pm JUN at 30°N: 34° high at 9 pm JUL at 30°N: 22° high at 9 pm AUG at 30°N: 12° high at 9 pm SEP at 30°N: 6° high at 9 pm OCT at 30°N: 6° high at 9 pm NOV at 30°N: 12° high at 9 pm DEC at 30°N: 21° high at 9 pm 20°N
JAN at 20°N: 24° high at 9 pm FEB at 20°N: 36° high at 9 pm MAR at 20°N: 43° high at 9 pm APR at 20°N: 43° high at 9 pm MAY at 20°N: 36° high at 9 pm JUN at 20°N: 25° high at 9 pm JUL at 20°N: 13° high at 9 pm AUG at 20°N: 2° high at 9 pm SEP at 20°N: -3° high at 9 pm OCT at 20°N: -4° high at 9 pm NOV at 20°N: 2° high at 9 pm DEC at 20°N: 12° high at 9 pm 10°N
JAN at 10°N: 15° high at 9 pm FEB at 10°N: 27° high at 9 pm MAR at 10°N: 33° high at 9 pm APR at 10°N: 33° high at 9 pm MAY at 10°N: 27° high at 9 pm JUN at 10°N: 16° high at 9 pm JUL at 10°N: 4° high at 9 pm AUG at 10°N: -7° high at 9 pm SEP at 10°N: -13° high at 9 pm OCT at 10°N: -13° high at 9 pm NOV at 10°N: -7° high at 9 pm DEC at 10°N: 3° high at 9 pm 0°
JAN at 0°: 6° high at 9 pm FEB at 0°: 17° high at 9 pm MAR at 0°: 23° high at 9 pm APR at 0°: 23° high at 9 pm MAY at 0°: 17° high at 9 pm JUN at 0°: 6° high at 9 pm JUL at 0°: -6° high at 9 pm AUG at 0°: -17° high at 9 pm SEP at 0°: -23° high at 9 pm OCT at 0°: -23° high at 9 pm NOV at 0°: -17° high at 9 pm DEC at 0°: -6° high at 9 pm 10°S
JAN at 10°S: -3° high at 9 pm FEB at 10°S: 8° high at 9 pm MAR at 10°S: 13° high at 9 pm APR at 10°S: 14° high at 9 pm MAY at 10°S: 8° high at 9 pm JUN at 10°S: -3° high at 9 pm JUL at 10°S: -15° high at 9 pm AUG at 10°S: -26° high at 9 pm SEP at 10°S: -33° high at 9 pm OCT at 10°S: -33° high at 9 pm NOV at 10°S: -26° high at 9 pm DEC at 10°S: -15° high at 9 pm 20°S
JAN at 20°S: -12° high at 9 pm FEB at 20°S: -2° high at 9 pm MAR at 20°S: 3° high at 9 pm APR at 20°S: 4° high at 9 pm MAY at 20°S: -2° high at 9 pm JUN at 20°S: -12° high at 9 pm JUL at 20°S: -24° high at 9 pm AUG at 20°S: -36° high at 9 pm SEP at 20°S: -43° high at 9 pm OCT at 20°S: -43° high at 9 pm NOV at 20°S: -36° high at 9 pm DEC at 20°S: -25° high at 9 pm 30°S
JAN at 30°S: -21° high at 9 pm FEB at 30°S: -12° high at 9 pm MAR at 30°S: -7° high at 9 pm APR at 30°S: -6° high at 9 pm MAY at 30°S: -11° high at 9 pm JUN at 30°S: -21° high at 9 pm JUL at 30°S: -33° high at 9 pm AUG at 30°S: -45° high at 9 pm SEP at 30°S: -53° high at 9 pm OCT at 30°S: -53° high at 9 pm NOV at 30°S: -45° high at 9 pm DEC at 30°S: -33° high at 9 pm 40°S
JAN at 40°S: -30° high at 9 pm FEB at 40°S: -21° high at 9 pm MAR at 40°S: -17° high at 9 pm APR at 40°S: -16° high at 9 pm MAY at 40°S: -21° high at 9 pm JUN at 40°S: -30° high at 9 pm JUL at 40°S: -41° high at 9 pm AUG at 40°S: -54° high at 9 pm SEP at 40°S: -63° high at 9 pm OCT at 40°S: -63° high at 9 pm NOV at 40°S: -54° high at 9 pm DEC at 40°S: -42° 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 24°S, and never sets north of 24°N.
The distance to LBN 691 is not well measured
No reliable distance has been measured for it yet.
2 Lynds bright nebulae and 0 Lynds dark nebulae lie within 5° of LBN 691
The nearest:
NGC and IC objects in the field that are brighter than magnitude 12.5 or have their own page:
NGC 2976, late spiral galaxy, 2.4° NGC 2805, mixed spiral galaxy, 2.4° NGC 2880, lenticular galaxy, 3.4° M81 Bode's Galaxy, early spiral galaxy, 3.7° NGC 2787, lenticular galaxy, 3.8° NGC 3077, spiral galaxy, 3.9°
LBN 691 catalog data
Field Value
Designations LBN 691 Constellation Ursa Major Type emission and reflection nebula Right ascension (J2000) 09h 37.1m Declination (J2000) +65° 46′ Galactic longitude and latitude 147.05°, +41.11° Brightness class 6 of 6 (the faintest) Color class 2 of 4 (bluish) Apparent size 3° × 2° Best with Camera Best month April Catalog page LBN 501 to 1000
