IC 4239 is a lenticular galaxy in Canes Venatici, 664 million light-years away
IC 4239 is a lenticular galaxy in the constellation Canes Venatici , 664 million light-years away. It shines at magnitude 15.0 and spans 53″ × 36″ of sky, about 169,800 light-years across. 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 4239 from Cor Caroli
Cor Caroli
IC 4239
CANES VENATICI
IC 4239 lies 9.4° southeast of Cor Caroli , the magnitude 2.9 star. A fist held at arm's length covers about 10°.
IC 4239 is highest in the evening in May
JAN
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60°N
JAN at 60°N: 9° high at 9 pm FEB at 60°N: 21° high at 9 pm MAR at 60°N: 35° high at 9 pm APR at 60°N: 49° high at 9 pm MAY at 60°N: 60° high at 9 pm JUN at 60°N: 59° high at 9 pm JUL at 60°N: 48° high at 9 pm AUG at 60°N: 33° high at 9 pm SEP at 60°N: 18° high at 9 pm OCT at 60°N: 7° high at 9 pm NOV at 60°N: 1° high at 9 pm DEC at 60°N: 2° high at 9 pm 50°N
JAN at 50°N: 2° high at 9 pm FEB at 50°N: 17° high at 9 pm MAR at 50°N: 33° high at 9 pm APR at 50°N: 53° high at 9 pm MAY at 50°N: 69° high at 9 pm JUN at 50°N: 67° high at 9 pm JUL at 50°N: 50° high at 9 pm AUG at 50°N: 31° high at 9 pm SEP at 50°N: 13° high at 9 pm OCT at 50°N: -1° high at 9 pm NOV at 50°N: -8° high at 9 pm DEC at 50°N: -8° high at 9 pm 40°N
JAN at 40°N: -6° high at 9 pm FEB at 40°N: 12° high at 9 pm MAR at 40°N: 31° high at 9 pm APR at 40°N: 54° high at 9 pm MAY at 40°N: 76° high at 9 pm JUN at 40°N: 73° high at 9 pm JUL at 40°N: 51° high at 9 pm AUG at 40°N: 28° high at 9 pm SEP at 40°N: 7° high at 9 pm OCT at 40°N: -9° high at 9 pm NOV at 40°N: -18° high at 9 pm DEC at 40°N: -17° high at 9 pm 30°N
JAN at 30°N: -14° high at 9 pm FEB at 30°N: 7° high at 9 pm MAR at 30°N: 28° high at 9 pm APR at 30°N: 53° high at 9 pm MAY at 30°N: 79° high at 9 pm JUN at 30°N: 75° high at 9 pm JUL at 30°N: 50° high at 9 pm AUG at 30°N: 25° high at 9 pm SEP at 30°N: 2° high at 9 pm OCT at 30°N: -17° high at 9 pm NOV at 30°N: -28° high at 9 pm DEC at 30°N: -27° high at 9 pm 20°N
JAN at 20°N: -21° high at 9 pm FEB at 20°N: 1° high at 9 pm MAR at 20°N: 24° high at 9 pm APR at 20°N: 50° high at 9 pm MAY at 20°N: 74° high at 9 pm JUN at 20°N: 71° high at 9 pm JUL at 20°N: 47° high at 9 pm AUG at 20°N: 21° high at 9 pm SEP at 20°N: -4° high at 9 pm OCT at 20°N: -25° high at 9 pm NOV at 20°N: -38° high at 9 pm DEC at 20°N: -36° high at 9 pm 10°N
JAN at 10°N: -28° high at 9 pm FEB at 10°N: -4° high at 9 pm MAR at 10°N: 19° high at 9 pm APR at 10°N: 45° high at 9 pm MAY at 10°N: 66° high at 9 pm JUN at 10°N: 64° high at 9 pm JUL at 10°N: 42° high at 9 pm AUG at 10°N: 16° high at 9 pm SEP at 10°N: -10° high at 9 pm OCT at 10°N: -32° high at 9 pm NOV at 10°N: -47° high at 9 pm DEC at 10°N: -46° high at 9 pm 0°
JAN at 0°: -35° high at 9 pm FEB at 0°: -9° high at 9 pm MAR at 0°: 14° high at 9 pm APR at 0°: 39° high at 9 pm MAY at 0°: 57° high at 9 pm JUN at 0°: 55° high at 9 pm JUL at 0°: 36° high at 9 pm AUG at 0°: 11° high at 9 pm SEP at 0°: -15° high at 9 pm OCT at 0°: -39° high at 9 pm NOV at 0°: -57° high at 9 pm DEC at 0°: -55° high at 9 pm 10°S
JAN at 10°S: -40° high at 9 pm FEB at 10°S: -14° high at 9 pm MAR at 10°S: 9° high at 9 pm APR at 10°S: 32° high at 9 pm MAY at 10°S: 47° high at 9 pm JUN at 10°S: 46° high at 9 pm JUL at 10°S: 29° high at 9 pm AUG at 10°S: 5° high at 9 pm SEP at 10°S: -20° high at 9 pm OCT at 10°S: -45° high at 9 pm NOV at 10°S: -66° high at 9 pm DEC at 10°S: -63° high at 9 pm 20°S
JAN at 20°S: -45° high at 9 pm FEB at 20°S: -19° high at 9 pm MAR at 20°S: 3° high at 9 pm APR at 20°S: 25° high at 9 pm MAY at 20°S: 37° high at 9 pm JUN at 20°S: 36° high at 9 pm JUL at 20°S: 22° high at 9 pm AUG at 20°S: -0° high at 9 pm SEP at 20°S: -25° high at 9 pm OCT at 20°S: -50° high at 9 pm NOV at 20°S: -75° high at 9 pm DEC at 20°S: -71° high at 9 pm 30°S
JAN at 30°S: -49° high at 9 pm FEB at 30°S: -23° high at 9 pm MAR at 30°S: -3° high at 9 pm APR at 30°S: 17° high at 9 pm MAY at 30°S: 28° high at 9 pm JUN at 30°S: 27° high at 9 pm JUL at 30°S: 15° high at 9 pm AUG at 30°S: -5° high at 9 pm SEP at 30°S: -29° high at 9 pm OCT at 30°S: -54° high at 9 pm NOV at 30°S: -80° high at 9 pm DEC at 30°S: -75° high at 9 pm 40°S
JAN at 40°S: -50° high at 9 pm FEB at 40°S: -27° high at 9 pm MAR at 40°S: -8° high at 9 pm APR at 40°S: 9° high at 9 pm MAY at 40°S: 18° high at 9 pm JUN at 40°S: 17° high at 9 pm JUL at 40°S: 7° high at 9 pm AUG at 40°S: -11° high at 9 pm SEP at 40°S: -32° high at 9 pm OCT at 40°S: -55° high at 9 pm NOV at 40°S: -77° high at 9 pm DEC at 40°S: -73° 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.
IC 4239 is 664 million light-years away
The light seen from IC 4239 tonight left it about 664 million years ago, long before modern humans existed. Distance source: Cosmicflows-4 (Tully et al. 2023).
Objects within 6° of IC 4239
142 NGC and IC objects lie within 6°. The nearest that are brighter than magnitude 12.5 or have their own page:
IC 883, Magellanic spiral galaxy, 3.3° M3 Messier 3, globular cluster, 4.6° NGC 4956, lenticular galaxy, 5.9° NGC 4921, early spiral galaxy, 5.9° NGC 5273, lenticular galaxy, 6.0°
IC 4239 catalog data
Field Value
Constellation Canes Venatici Designations IC 4239, 2MASX J13242547+3057336, MCG +05-32-015, PGC 046872, SDSS J132425.42+305733.4, SDSS J132425.43+305733.4 Type lenticular galaxy (S0-a) Right ascension (J2000) 13h 24.4m Declination (J2000) +30° 58′ Magnitude 15.0 Surface brightness 23.5 mag/arcmin² Apparent size 53″ × 36″ Position angle 132° True size 169,800 light-years Distance 664 million light-years (Cosmicflows-4 (Tully et al. 2023)) Radial velocity 14,162 km/s, redshift 0.04841 Best with Large telescope Best month May Catalog page IC 4001 to 4500
