IC 4423 is a spiral galaxy in Bootes, 445 million light-years away
IC 4423 is a spiral galaxy in the constellation Bootes , 445 million light-years away. It shines at magnitude 15.0 and spans 1′ × 30″ of sky, about 132,100 light-years across. It is faint: a 10-inch or larger telescope, or a camera, and it is highest in the evening sky in June.
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 4423 from Arcturus
Arcturus
IC 4423
BOöTES
IC 4423 lies 7.5° north of Arcturus , the magnitude -0.1 star. Three fingers held at arm's length cover about 5°.
IC 4423 is highest in the evening in June
JAN
FEB
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60°N
JAN at 60°N: 0° high at 9 pm FEB at 60°N: 11° high at 9 pm MAR at 60°N: 23° high at 9 pm APR at 60°N: 38° high at 9 pm MAY at 60°N: 51° high at 9 pm JUN at 60°N: 56° high at 9 pm JUL at 60°N: 50° high at 9 pm AUG at 60°N: 36° high at 9 pm SEP at 60°N: 21° high at 9 pm OCT at 60°N: 8° high at 9 pm NOV at 60°N: -1° high at 9 pm DEC at 60°N: -4° high at 9 pm 50°N
JAN at 50°N: -8° high at 9 pm FEB at 50°N: 5° high at 9 pm MAR at 50°N: 21° high at 9 pm APR at 50°N: 40° high at 9 pm MAY at 50°N: 58° high at 9 pm JUN at 50°N: 66° high at 9 pm JUL at 50°N: 56° high at 9 pm AUG at 50°N: 38° high at 9 pm SEP at 50°N: 18° high at 9 pm OCT at 50°N: 2° high at 9 pm NOV at 50°N: -10° high at 9 pm DEC at 50°N: -14° high at 9 pm 40°N
JAN at 40°N: -17° high at 9 pm FEB at 40°N: -1° high at 9 pm MAR at 40°N: 17° high at 9 pm APR at 40°N: 40° high at 9 pm MAY at 40°N: 62° high at 9 pm JUN at 40°N: 76° high at 9 pm JUL at 40°N: 61° high at 9 pm AUG at 40°N: 37° high at 9 pm SEP at 40°N: 15° high at 9 pm OCT at 40°N: -5° high at 9 pm NOV at 40°N: -19° high at 9 pm DEC at 40°N: -24° high at 9 pm 30°N
JAN at 30°N: -25° high at 9 pm FEB at 30°N: -7° high at 9 pm MAR at 30°N: 14° high at 9 pm APR at 30°N: 39° high at 9 pm MAY at 30°N: 64° high at 9 pm JUN at 30°N: 86° high at 9 pm JUL at 30°N: 62° high at 9 pm AUG at 30°N: 36° high at 9 pm SEP at 30°N: 11° high at 9 pm OCT at 30°N: -11° high at 9 pm NOV at 30°N: -28° high at 9 pm DEC at 30°N: -34° high at 9 pm 20°N
JAN at 20°N: -34° high at 9 pm FEB at 20°N: -13° high at 9 pm MAR at 20°N: 10° high at 9 pm APR at 20°N: 36° high at 9 pm MAY at 20°N: 63° high at 9 pm JUN at 20°N: 84° high at 9 pm JUL at 20°N: 61° high at 9 pm AUG at 20°N: 33° high at 9 pm SEP at 20°N: 7° high at 9 pm OCT at 20°N: -17° high at 9 pm NOV at 20°N: -37° high at 9 pm DEC at 20°N: -44° high at 9 pm 10°N
JAN at 10°N: -42° high at 9 pm FEB at 10°N: -18° high at 9 pm MAR at 10°N: 5° high at 9 pm APR at 10°N: 33° high at 9 pm MAY at 10°N: 58° high at 9 pm JUN at 10°N: 74° high at 9 pm JUL at 10°N: 56° high at 9 pm AUG at 10°N: 29° high at 9 pm SEP at 10°N: 2° high at 9 pm OCT at 10°N: -23° high at 9 pm NOV at 10°N: -45° high at 9 pm DEC at 10°N: -54° high at 9 pm 0°
JAN at 0°: -49° high at 9 pm FEB at 0°: -24° high at 9 pm MAR at 0°: 1° high at 9 pm APR at 0°: 28° high at 9 pm MAY at 0°: 52° high at 9 pm JUN at 0°: 64° high at 9 pm JUL at 0°: 50° high at 9 pm AUG at 0°: 25° high at 9 pm SEP at 0°: -2° high at 9 pm OCT at 0°: -28° high at 9 pm NOV at 0°: -53° high at 9 pm DEC at 0°: -64° high at 9 pm 10°S
JAN at 10°S: -55° high at 9 pm FEB at 10°S: -28° high at 9 pm MAR at 10°S: -3° high at 9 pm APR at 10°S: 23° high at 9 pm MAY at 10°S: 44° high at 9 pm JUN at 10°S: 54° high at 9 pm JUL at 10°S: 43° high at 9 pm AUG at 10°S: 20° high at 9 pm SEP at 10°S: -7° high at 9 pm OCT at 10°S: -33° high at 9 pm NOV at 10°S: -59° high at 9 pm DEC at 10°S: -74° high at 9 pm 20°S
JAN at 20°S: -59° high at 9 pm FEB at 20°S: -32° high at 9 pm MAR at 20°S: -8° high at 9 pm APR at 20°S: 17° high at 9 pm MAY at 20°S: 36° high at 9 pm JUN at 20°S: 44° high at 9 pm JUL at 20°S: 35° high at 9 pm AUG at 20°S: 14° high at 9 pm SEP at 20°S: -11° high at 9 pm OCT at 20°S: -37° high at 9 pm NOV at 20°S: -64° high at 9 pm DEC at 20°S: -83° high at 9 pm 30°S
JAN at 30°S: -61° high at 9 pm FEB at 30°S: -35° high at 9 pm MAR at 30°S: -12° high at 9 pm APR at 30°S: 11° high at 9 pm MAY at 30°S: 27° high at 9 pm JUN at 30°S: 34° high at 9 pm JUL at 30°S: 26° high at 9 pm AUG at 30°S: 8° high at 9 pm SEP at 30°S: -15° high at 9 pm OCT at 30°S: -39° high at 9 pm NOV at 30°S: -66° high at 9 pm DEC at 30°S: -86° high at 9 pm 40°S
JAN at 40°S: -59° high at 9 pm FEB at 40°S: -36° high at 9 pm MAR at 40°S: -16° high at 9 pm APR at 40°S: 4° high at 9 pm MAY at 40°S: 19° high at 9 pm JUN at 40°S: 24° high at 9 pm JUL at 40°S: 18° high at 9 pm AUG at 40°S: 2° high at 9 pm SEP at 40°S: -18° high at 9 pm OCT at 40°S: -40° high at 9 pm NOV at 40°S: -63° high at 9 pm DEC at 40°S: -76° 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 64°S, and never sets north of 64°N.
IC 4423 is 445 million light-years away
The light seen from IC 4423 tonight left it about 445 million years ago, long before modern humans existed. Distance source: Cosmicflows-4 (Tully et al. 2023).
Objects within 6° of IC 4423
75 NGC and IC objects lie within 6°. The nearest that are brighter than magnitude 12.5 or have their own page:
IC 4423 catalog data
Field Value
Constellation Bootes Designations IC 4423, 2MASX J14261771+2614459, MCG +04-34-028, PGC 051549, SDSS J142617.73+261446.0, UGC 09247 Type spiral galaxy (Sbc) Right ascension (J2000) 14h 26.3m Declination (J2000) +26° 15′ Magnitude 15.0 Surface brightness 23.5 mag/arcmin² Apparent size 1′ × 30″ Position angle 71° True size 132,100 light-years Distance 445 million light-years (Cosmicflows-4 (Tully et al. 2023)) Radial velocity 8,976 km/s, redshift 0.0304 Best with Large telescope Best month June Catalog page IC 4001 to 4500
