IC 4091 is a spiral galaxy in Coma Berenices
IC 4091 is a spiral galaxy in the constellation Coma Berenices . It shines at magnitude 16.0 and spans 31″ × 12″. It is faint: a 10-inch or larger telescope, or a camera, and it is highest in the evening sky in May.
Galaxy: a system of billions of stars, gas and dust held together by gravity, far outside the Milky Way. Spiral galaxies have a disk with arms; elliptical galaxies are smooth, round or oval swarms of older stars.
Finding IC 4091 from Vindemiatrix
Vindemiatrix
IC 4091
COMA BERENICES
IC 4091 lies 8.9° north of Vindemiatrix , the magnitude 2.9 star. A fist held at arm's length covers about 10°.
IC 4091 is highest in the evening in May
JAN
FEB
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APR
MAY
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AUG
SEP
OCT
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DEC
60°N
JAN at 60°N: 1° high at 9 pm FEB at 60°N: 14° high at 9 pm MAR at 60°N: 28° high at 9 pm APR at 60°N: 42° high at 9 pm MAY at 60°N: 50° high at 9 pm JUN at 60°N: 47° high at 9 pm JUL at 60°N: 36° high at 9 pm AUG at 60°N: 21° high at 9 pm SEP at 60°N: 6° high at 9 pm OCT at 60°N: -5° high at 9 pm NOV at 60°N: -10° high at 9 pm DEC at 60°N: -8° high at 9 pm 50°N
JAN at 50°N: -5° high at 9 pm FEB at 50°N: 12° high at 9 pm MAR at 50°N: 29° high at 9 pm APR at 50°N: 48° high at 9 pm MAY at 50°N: 59° high at 9 pm JUN at 50°N: 55° high at 9 pm JUL at 50°N: 39° high at 9 pm AUG at 50°N: 20° high at 9 pm SEP at 50°N: 1° high at 9 pm OCT at 50°N: -13° high at 9 pm NOV at 50°N: -20° high at 9 pm DEC at 50°N: -17° high at 9 pm 40°N
JAN at 40°N: -12° high at 9 pm FEB at 40°N: 9° high at 9 pm MAR at 40°N: 29° high at 9 pm APR at 40°N: 52° high at 9 pm MAY at 40°N: 69° high at 9 pm JUN at 40°N: 62° high at 9 pm JUL at 40°N: 41° high at 9 pm AUG at 40°N: 18° high at 9 pm SEP at 40°N: -4° high at 9 pm OCT at 40°N: -21° high at 9 pm NOV at 40°N: -30° high at 9 pm DEC at 40°N: -26° high at 9 pm 30°N
JAN at 30°N: -18° high at 9 pm FEB at 30°N: 5° high at 9 pm MAR at 30°N: 29° high at 9 pm APR at 30°N: 55° high at 9 pm MAY at 30°N: 78° high at 9 pm JUN at 30°N: 67° high at 9 pm JUL at 30°N: 42° high at 9 pm AUG at 30°N: 16° high at 9 pm SEP at 30°N: -9° high at 9 pm OCT at 30°N: -29° high at 9 pm NOV at 30°N: -40° high at 9 pm DEC at 30°N: -35° high at 9 pm 20°N
JAN at 20°N: -24° high at 9 pm FEB at 20°N: 2° high at 9 pm MAR at 20°N: 27° high at 9 pm APR at 20°N: 55° high at 9 pm MAY at 20°N: 83° high at 9 pm JUN at 20°N: 69° high at 9 pm JUL at 20°N: 41° high at 9 pm AUG at 20°N: 13° high at 9 pm SEP at 20°N: -14° high at 9 pm OCT at 20°N: -36° high at 9 pm NOV at 20°N: -50° high at 9 pm DEC at 20°N: -44° high at 9 pm 10°N
JAN at 10°N: -29° high at 9 pm FEB at 10°N: -2° high at 9 pm MAR at 10°N: 24° high at 9 pm APR at 10°N: 53° high at 9 pm MAY at 10°N: 78° high at 9 pm JUN at 10°N: 66° high at 9 pm JUL at 10°N: 39° high at 9 pm AUG at 10°N: 10° high at 9 pm SEP at 10°N: -18° high at 9 pm OCT at 10°N: -43° high at 9 pm NOV at 10°N: -59° high at 9 pm DEC at 10°N: -52° high at 9 pm 0°
JAN at 0°: -34° high at 9 pm FEB at 0°: -5° high at 9 pm MAR at 0°: 21° high at 9 pm APR at 0°: 48° high at 9 pm MAY at 0°: 69° high at 9 pm JUN at 0°: 60° high at 9 pm JUL at 0°: 35° high at 9 pm AUG at 0°: 7° high at 9 pm SEP at 0°: -22° high at 9 pm OCT at 0°: -49° high at 9 pm NOV at 0°: -69° high at 9 pm DEC at 0°: -60° high at 9 pm 10°S
JAN at 10°S: -37° high at 9 pm FEB at 10°S: -8° high at 9 pm MAR at 10°S: 17° high at 9 pm APR at 10°S: 43° high at 9 pm MAY at 10°S: 59° high at 9 pm JUN at 10°S: 53° high at 9 pm JUL at 10°S: 30° high at 9 pm AUG at 10°S: 3° high at 9 pm SEP at 10°S: -25° high at 9 pm OCT at 10°S: -53° high at 9 pm NOV at 10°S: -78° high at 9 pm DEC at 10°S: -66° high at 9 pm 20°S
JAN at 20°S: -39° high at 9 pm FEB at 20°S: -12° high at 9 pm MAR at 20°S: 13° high at 9 pm APR at 20°S: 36° high at 9 pm MAY at 20°S: 49° high at 9 pm JUN at 20°S: 44° high at 9 pm JUL at 20°S: 25° high at 9 pm AUG at 20°S: -0° high at 9 pm SEP at 20°S: -28° high at 9 pm OCT at 20°S: -55° high at 9 pm NOV at 20°S: -84° high at 9 pm DEC at 20°S: -68° high at 9 pm 30°S
JAN at 30°S: -40° high at 9 pm FEB at 30°S: -14° high at 9 pm MAR at 30°S: 8° high at 9 pm APR at 30°S: 29° high at 9 pm MAY at 30°S: 40° high at 9 pm JUN at 30°S: 35° high at 9 pm JUL at 30°S: 19° high at 9 pm AUG at 30°S: -4° high at 9 pm SEP at 30°S: -30° high at 9 pm OCT at 30°S: -55° high at 9 pm NOV at 30°S: -78° high at 9 pm DEC at 30°S: -67° high at 9 pm 40°S
JAN at 40°S: -40° high at 9 pm FEB at 40°S: -17° high at 9 pm MAR at 40°S: 3° high at 9 pm APR at 40°S: 21° high at 9 pm MAY at 40°S: 30° high at 9 pm JUN at 40°S: 26° high at 9 pm JUL at 40°S: 13° high at 9 pm AUG at 40°S: -8° high at 9 pm SEP at 40°S: -30° high at 9 pm OCT at 40°S: -53° high at 9 pm NOV at 40°S: -69° high at 9 pm DEC at 40°S: -62° 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 70°S, and never sets north of 70°N.
The distance to IC 4091 is not well measured
No reliable distance has been measured for it yet.
Objects within 6° of IC 4091
259 NGC and IC objects lie within 6°. The nearest that are brighter than magnitude 12.5 or have their own page:
IC 4170 NED01, elliptical galaxy, 1.5° M64 Black Eye Galaxy, mixed spiral galaxy, 2.2° M53 Messier 53, globular cluster, 3.1° NGC 5012, late spiral galaxy, 3.7° NGC 5053, globular cluster, 4.0° NGC 5016, mixed spiral galaxy, 4.8° NGC 4710, lenticular galaxy, 5.6° NGC 4651 Umbrella Galaxy, late spiral galaxy, 5.6°
IC 4091 catalog data
Field Value
Constellation Coma Berenices Designations IC 4091, 2MASX J13021293+1953347, SDSS J130212.95+195334.7, SDSS J130212.95+195334.8 Type spiral galaxy (Sbc) Right ascension (J2000) 13h 02.2m Declination (J2000) +19° 54′ Magnitude 16.0 Surface brightness 23.6 mag/arcmin² Apparent size 31″ × 12″ Position angle 131° Best with Large telescope Best month May Catalog page IC 4001 to 4500
