IC 4166 is an early spiral galaxy in Canes Venatici
IC 4166 is an early spiral galaxy in the constellation Canes Venatici . It shines at magnitude 15.0 and spans 1′ × 24″. 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 4166 from Cor Caroli
Cor Caroli
IC 4166
CANES VENATICI
IC 4166 lies 7.1° south of Cor Caroli , the magnitude 2.9 star. Three fingers held at arm's length cover about 5°.
IC 4166 is highest in the evening in May
JAN
FEB
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APR
MAY
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JUL
AUG
SEP
OCT
NOV
DEC
60°N
JAN at 60°N: 11° high at 9 pm FEB at 60°N: 24° high at 9 pm MAR at 60°N: 37° high at 9 pm APR at 60°N: 52° high at 9 pm MAY at 60°N: 61° high at 9 pm JUN at 60°N: 58° high at 9 pm JUL at 60°N: 46° high at 9 pm AUG at 60°N: 31° high at 9 pm SEP at 60°N: 17° high at 9 pm OCT at 60°N: 7° high at 9 pm NOV at 60°N: 2° high at 9 pm DEC at 60°N: 3° high at 9 pm 50°N
JAN at 50°N: 4° high at 9 pm FEB at 50°N: 20° high at 9 pm MAR at 50°N: 37° high at 9 pm APR at 50°N: 56° high at 9 pm MAY at 50°N: 70° high at 9 pm JUN at 50°N: 65° high at 9 pm JUL at 50°N: 48° high at 9 pm AUG at 50°N: 28° high at 9 pm SEP at 50°N: 11° high at 9 pm OCT at 50°N: -2° high at 9 pm NOV at 50°N: -8° high at 9 pm DEC at 50°N: -6° high at 9 pm 40°N
JAN at 40°N: -3° high at 9 pm FEB at 40°N: 15° high at 9 pm MAR at 40°N: 35° high at 9 pm APR at 40°N: 58° high at 9 pm MAY at 40°N: 79° high at 9 pm JUN at 40°N: 70° high at 9 pm JUL at 40°N: 48° high at 9 pm AUG at 40°N: 25° high at 9 pm SEP at 40°N: 5° high at 9 pm OCT at 40°N: -10° high at 9 pm NOV at 40°N: -18° high at 9 pm DEC at 40°N: -16° high at 9 pm 30°N
JAN at 30°N: -10° high at 9 pm FEB at 30°N: 10° high at 9 pm MAR at 30°N: 32° high at 9 pm APR at 30°N: 57° high at 9 pm MAY at 30°N: 83° high at 9 pm JUN at 30°N: 71° high at 9 pm JUL at 30°N: 46° high at 9 pm AUG at 30°N: 21° high at 9 pm SEP at 30°N: -1° high at 9 pm OCT at 30°N: -19° high at 9 pm NOV at 30°N: -28° high at 9 pm DEC at 30°N: -25° high at 9 pm 20°N
JAN at 20°N: -18° high at 9 pm FEB at 20°N: 5° high at 9 pm MAR at 20°N: 28° high at 9 pm APR at 20°N: 54° high at 9 pm MAY at 20°N: 76° high at 9 pm JUN at 20°N: 67° high at 9 pm JUL at 20°N: 43° high at 9 pm AUG at 20°N: 17° high at 9 pm SEP at 20°N: -8° high at 9 pm OCT at 20°N: -27° high at 9 pm NOV at 20°N: -38° high at 9 pm DEC at 20°N: -34° high at 9 pm 10°N
JAN at 10°N: -24° high at 9 pm FEB at 10°N: -0° high at 9 pm MAR at 10°N: 23° high at 9 pm APR at 10°N: 49° high at 9 pm MAY at 10°N: 67° high at 9 pm JUN at 10°N: 60° high at 9 pm JUL at 10°N: 38° high at 9 pm AUG at 10°N: 12° high at 9 pm SEP at 10°N: -14° high at 9 pm OCT at 10°N: -35° high at 9 pm NOV at 10°N: -48° high at 9 pm DEC at 10°N: -43° high at 9 pm 0°
JAN at 0°: -31° high at 9 pm FEB at 0°: -5° high at 9 pm MAR at 0°: 18° high at 9 pm APR at 0°: 42° high at 9 pm MAY at 0°: 58° high at 9 pm JUN at 0°: 52° high at 9 pm JUL at 0°: 32° high at 9 pm AUG at 0°: 7° high at 9 pm SEP at 0°: -19° high at 9 pm OCT at 0°: -42° high at 9 pm NOV at 0°: -58° high at 9 pm DEC at 0°: -52° high at 9 pm 10°S
JAN at 10°S: -36° high at 9 pm FEB at 10°S: -10° high at 9 pm MAR at 10°S: 12° high at 9 pm APR at 10°S: 35° high at 9 pm MAY at 10°S: 48° high at 9 pm JUN at 10°S: 43° high at 9 pm JUL at 10°S: 26° high at 9 pm AUG at 10°S: 1° high at 9 pm SEP at 10°S: -25° high at 9 pm OCT at 10°S: -49° high at 9 pm NOV at 10°S: -68° high at 9 pm DEC at 10°S: -60° high at 9 pm 20°S
JAN at 20°S: -41° high at 9 pm FEB at 20°S: -15° high at 9 pm MAR at 20°S: 7° high at 9 pm APR at 20°S: 27° high at 9 pm MAY at 20°S: 38° high at 9 pm JUN at 20°S: 34° high at 9 pm JUL at 20°S: 19° high at 9 pm AUG at 20°S: -4° high at 9 pm SEP at 20°S: -29° high at 9 pm OCT at 20°S: -54° high at 9 pm NOV at 20°S: -77° high at 9 pm DEC at 20°S: -67° high at 9 pm 30°S
JAN at 30°S: -45° high at 9 pm FEB at 30°S: -20° high at 9 pm MAR at 30°S: 1° high at 9 pm APR at 30°S: 19° high at 9 pm MAY at 30°S: 28° high at 9 pm JUN at 30°S: 25° high at 9 pm JUL at 30°S: 11° high at 9 pm AUG at 30°S: -9° high at 9 pm SEP at 30°S: -33° high at 9 pm OCT at 30°S: -58° high at 9 pm NOV at 30°S: -84° high at 9 pm DEC at 30°S: -71° high at 9 pm 40°S
JAN at 40°S: -47° high at 9 pm FEB at 40°S: -24° high at 9 pm MAR at 40°S: -6° high at 9 pm APR at 40°S: 10° high at 9 pm MAY at 40°S: 18° high at 9 pm JUN at 40°S: 16° high at 9 pm JUL at 40°S: 4° high at 9 pm AUG at 40°S: -14° high at 9 pm SEP at 40°S: -36° high at 9 pm OCT at 40°S: -58° high at 9 pm NOV at 40°S: -80° high at 9 pm DEC at 40°S: -70° 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 59°S, and never sets north of 59°N.
The distance to IC 4166 is not well measured
No reliable distance has been measured for it yet.
Objects within 6° of IC 4166
277 NGC and IC objects lie within 6°. The nearest that are brighter than magnitude 12.5 or have their own page:
NGC 4793, late spiral galaxy, 3.4° NGC 4889, elliptical galaxy, 3.6° NGC 4921, early spiral galaxy, 3.7° NGC 4861, Magellanic spiral galaxy, 3.7° NGC 4874, elliptical galaxy, 3.7° NGC 4956, lenticular galaxy, 3.7° NGC 4676B, lenticular galaxy, 4.2° NGC 4676A, lenticular galaxy, 4.2°
IC 4166 catalog data
Field Value
Constellation Canes Venatici Designations IC 4166, 2MASX J13051858+3126324, MCG +05-31-122, PGC 045264, SDSS J130518.30+312631.9, SDSS J130518.59+312632.3, UGC 08180 Type early spiral galaxy (Sab) Right ascension (J2000) 13h 05.3m Declination (J2000) +31° 27′ Magnitude 15.0 Surface brightness 23.4 mag/arcmin² Apparent size 1′ × 24″ Position angle 177° Radial velocity 10,676 km/s, redshift 0.03627 Best with Large telescope Best month May Catalog page IC 4001 to 4500
