IC 1391 is an elliptical galaxy in Aquarius, 815 million light-years away
IC 1391 is an elliptical galaxy in the constellation Aquarius , 815 million light-years away. It shines at magnitude 15.0 and spans 38″ × 24″ of sky, about 151,700 light-years across. It is faint: a 10-inch or larger telescope, or a camera, and it is highest in the evening sky in September.
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 1391 from Sadalsuud
Sadalsuud
IC 1391
AQUARIUS
IC 1391 lies 5.1° north of Sadalsuud , the magnitude 2.9 star. Three fingers held at arm's length cover about 5°.
IC 1391 is highest in the evening in September
JAN
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APR
MAY
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JUL
AUG
SEP
OCT
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DEC
60°N
JAN at 60°N: -8° high at 9 pm FEB at 60°N: -22° high at 9 pm MAR at 60°N: -29° high at 9 pm APR at 60°N: -29° high at 9 pm MAY at 60°N: -22° high at 9 pm JUN at 60°N: -8° high at 9 pm JUL at 60°N: 7° high at 9 pm AUG at 60°N: 20° high at 9 pm SEP at 60°N: 28° high at 9 pm OCT at 60°N: 28° high at 9 pm NOV at 60°N: 20° high at 9 pm DEC at 60°N: 7° high at 9 pm 50°N
JAN at 50°N: -10° high at 9 pm FEB at 50°N: -28° high at 9 pm MAR at 50°N: -39° high at 9 pm APR at 50°N: -39° high at 9 pm MAY at 50°N: -28° high at 9 pm JUN at 50°N: -10° high at 9 pm JUL at 50°N: 9° high at 9 pm AUG at 50°N: 26° high at 9 pm SEP at 50°N: 38° high at 9 pm OCT at 50°N: 38° high at 9 pm NOV at 50°N: 26° high at 9 pm DEC at 50°N: 9° high at 9 pm 40°N
JAN at 40°N: -12° high at 9 pm FEB at 40°N: -34° high at 9 pm MAR at 40°N: -48° high at 9 pm APR at 40°N: -48° high at 9 pm MAY at 40°N: -34° high at 9 pm JUN at 40°N: -12° high at 9 pm JUL at 40°N: 11° high at 9 pm AUG at 40°N: 32° high at 9 pm SEP at 40°N: 47° high at 9 pm OCT at 40°N: 47° high at 9 pm NOV at 40°N: 32° high at 9 pm DEC at 40°N: 11° high at 9 pm 30°N
JAN at 30°N: -14° high at 9 pm FEB at 30°N: -39° high at 9 pm MAR at 30°N: -57° high at 9 pm APR at 30°N: -57° high at 9 pm MAY at 30°N: -39° high at 9 pm JUN at 30°N: -14° high at 9 pm JUL at 30°N: 12° high at 9 pm AUG at 30°N: 37° high at 9 pm SEP at 30°N: 56° high at 9 pm OCT at 30°N: 56° high at 9 pm NOV at 30°N: 37° high at 9 pm DEC at 30°N: 13° high at 9 pm 20°N
JAN at 20°N: -15° high at 9 pm FEB at 20°N: -43° high at 9 pm MAR at 20°N: -65° high at 9 pm APR at 20°N: -66° high at 9 pm MAY at 20°N: -43° high at 9 pm JUN at 20°N: -15° high at 9 pm JUL at 20°N: 13° high at 9 pm AUG at 20°N: 41° high at 9 pm SEP at 20°N: 65° high at 9 pm OCT at 20°N: 65° high at 9 pm NOV at 20°N: 41° high at 9 pm DEC at 20°N: 14° high at 9 pm 10°N
JAN at 10°N: -16° high at 9 pm FEB at 10°N: -46° high at 9 pm MAR at 10°N: -71° high at 9 pm APR at 10°N: -73° high at 9 pm MAY at 10°N: -45° high at 9 pm JUN at 10°N: -15° high at 9 pm JUL at 10°N: 14° high at 9 pm AUG at 10°N: 44° high at 9 pm SEP at 10°N: 72° high at 9 pm OCT at 10°N: 72° high at 9 pm NOV at 10°N: 44° high at 9 pm DEC at 10°N: 15° high at 9 pm 0°
JAN at 0°: -16° high at 9 pm FEB at 0°: -46° high at 9 pm MAR at 0°: -74° high at 9 pm APR at 0°: -75° high at 9 pm MAY at 0°: -46° high at 9 pm JUN at 0°: -15° high at 9 pm JUL at 0°: 14° high at 9 pm AUG at 0°: 45° high at 9 pm SEP at 0°: 75° high at 9 pm OCT at 0°: 75° high at 9 pm NOV at 0°: 45° high at 9 pm DEC at 0°: 15° high at 9 pm 10°S
JAN at 10°S: -15° high at 9 pm FEB at 10°S: -45° high at 9 pm MAR at 10°S: -71° high at 9 pm APR at 10°S: -72° high at 9 pm MAY at 10°S: -45° high at 9 pm JUN at 10°S: -15° high at 9 pm JUL at 10°S: 14° high at 9 pm AUG at 10°S: 44° high at 9 pm SEP at 10°S: 73° high at 9 pm OCT at 10°S: 72° high at 9 pm NOV at 10°S: 44° high at 9 pm DEC at 10°S: 15° high at 9 pm 20°S
JAN at 20°S: -15° high at 9 pm FEB at 20°S: -43° high at 9 pm MAR at 20°S: -64° high at 9 pm APR at 20°S: -65° high at 9 pm MAY at 20°S: -42° high at 9 pm JUN at 20°S: -14° high at 9 pm JUL at 20°S: 14° high at 9 pm AUG at 20°S: 42° high at 9 pm SEP at 20°S: 66° high at 9 pm OCT at 20°S: 66° high at 9 pm NOV at 20°S: 41° high at 9 pm DEC at 20°S: 14° high at 9 pm 30°S
JAN at 30°S: -13° high at 9 pm FEB at 30°S: -38° high at 9 pm MAR at 30°S: -56° high at 9 pm APR at 30°S: -56° high at 9 pm MAY at 30°S: -38° high at 9 pm JUN at 30°S: -13° high at 9 pm JUL at 30°S: 13° high at 9 pm AUG at 30°S: 38° high at 9 pm SEP at 30°S: 57° high at 9 pm OCT at 30°S: 57° high at 9 pm NOV at 30°S: 38° high at 9 pm DEC at 30°S: 13° high at 9 pm 40°S
JAN at 40°S: -12° high at 9 pm FEB at 40°S: -33° high at 9 pm MAR at 40°S: -47° high at 9 pm APR at 40°S: -47° high at 9 pm MAY at 40°S: -33° high at 9 pm JUN at 40°S: -11° high at 9 pm JUL at 40°S: 11° high at 9 pm AUG at 40°S: 33° high at 9 pm SEP at 40°S: 48° high at 9 pm OCT at 40°S: 48° high at 9 pm NOV at 40°S: 33° high at 9 pm DEC at 40°S: 12° 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 southern hemisphere and north to about 89°N.
IC 1391 is 815 million light-years away
The light seen from IC 1391 tonight left it about 815 million years ago, long before modern humans existed. Distance source: Cosmicflows-4 (Tully et al. 2023).
Objects within 6° of IC 1391
43 NGC and IC objects lie within 6°. The nearest that are brighter than magnitude 12.5 or have their own page:
IC 1391 catalog data
Field Value
Constellation Aquarius Designations IC 1391, 2MASX J21350042-0030407, MCG +00-55-007, PGC 067002, SDSS J213500.38-003041.2, SDSS J213500.39-003041.1, SDSS J213500.39-003041.2, SDSS J213500.40-003041.2 Type elliptical galaxy (E) Right ascension (J2000) 21h 35.0m Declination (J2000) -00° 31′ Magnitude 15.0 Surface brightness 23.7 mag/arcmin² Apparent size 38″ × 24″ Position angle 84° True size 151,700 light-years Distance 815 million light-years (Cosmicflows-4 (Tully et al. 2023)) Radial velocity 8,905 km/s, redshift 0.03016 Best with Large telescope Best month September Catalog page IC 1001 to 1500
