NGC 7645 is a barred spiral galaxy in Sculptor
NGC 7645 (ESO 470-003) is a barred spiral galaxy in the constellation Sculptor . It shines at magnitude 13.0 and spans 1.6′ × 1.1′. It is faint: a 10-inch or larger telescope, or a camera, and it is highest in the evening sky in October.
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 NGC 7645 from Fomalhaut
Fomalhaut
NGC 7645
SCULPTOR
NGC 7645 lies 5.7° east of Fomalhaut , the magnitude 1.2 star. Three fingers held at arm's length cover about 5°.
NGC 7645 is highest in the evening in October
JAN
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60°N
JAN at 60°N: -20° high at 9 pm FEB at 60°N: -35° high at 9 pm MAR at 60°N: -48° high at 9 pm APR at 60°N: -58° high at 9 pm MAY at 60°N: -57° high at 9 pm JUN at 60°N: -46° high at 9 pm JUL at 60°N: -32° high at 9 pm AUG at 60°N: -17° high at 9 pm SEP at 60°N: -6° high at 9 pm OCT at 60°N: 0° high at 9 pm NOV at 60°N: -1° high at 9 pm DEC at 60°N: -8° high at 9 pm 50°N
JAN at 50°N: -15° high at 9 pm FEB at 50°N: -34° high at 9 pm MAR at 50°N: -52° high at 9 pm APR at 50°N: -67° high at 9 pm MAY at 50°N: -66° high at 9 pm JUN at 50°N: -49° high at 9 pm JUL at 50°N: -30° high at 9 pm AUG at 50°N: -12° high at 9 pm SEP at 50°N: 2° high at 9 pm OCT at 50°N: 10° high at 9 pm NOV at 50°N: 9° high at 9 pm DEC at 50°N: 0° high at 9 pm 40°N
JAN at 40°N: -11° high at 9 pm FEB at 40°N: -32° high at 9 pm MAR at 40°N: -53° high at 9 pm APR at 40°N: -75° high at 9 pm MAY at 40°N: -73° high at 9 pm JUN at 40°N: -50° high at 9 pm JUL at 40°N: -28° high at 9 pm AUG at 40°N: -7° high at 9 pm SEP at 40°N: 10° high at 9 pm OCT at 40°N: 20° high at 9 pm NOV at 40°N: 19° high at 9 pm DEC at 40°N: 8° high at 9 pm 30°N
JAN at 30°N: -6° high at 9 pm FEB at 30°N: -30° high at 9 pm MAR at 30°N: -53° high at 9 pm APR at 30°N: -79° high at 9 pm MAY at 30°N: -75° high at 9 pm JUN at 30°N: -49° high at 9 pm JUL at 30°N: -25° high at 9 pm AUG at 30°N: -1° high at 9 pm SEP at 30°N: 18° high at 9 pm OCT at 30°N: 29° high at 9 pm NOV at 30°N: 28° high at 9 pm DEC at 30°N: 15° high at 9 pm 20°N
JAN at 20°N: -0° high at 9 pm FEB at 20°N: -26° high at 9 pm MAR at 20°N: -50° high at 9 pm APR at 20°N: -75° high at 9 pm MAY at 20°N: -72° high at 9 pm JUN at 20°N: -46° high at 9 pm JUL at 20°N: -21° high at 9 pm AUG at 20°N: 5° high at 9 pm SEP at 20°N: 26° high at 9 pm OCT at 20°N: 39° high at 9 pm NOV at 20°N: 38° high at 9 pm DEC at 20°N: 22° high at 9 pm 10°N
JAN at 10°N: 5° high at 9 pm FEB at 10°N: -22° high at 9 pm MAR at 10°N: -45° high at 9 pm APR at 10°N: -67° high at 9 pm MAY at 10°N: -65° high at 9 pm JUN at 10°N: -42° high at 9 pm JUL at 10°N: -16° high at 9 pm AUG at 10°N: 10° high at 9 pm SEP at 10°N: 34° high at 9 pm OCT at 10°N: 49° high at 9 pm NOV at 10°N: 47° high at 9 pm DEC at 10°N: 29° high at 9 pm 0°
JAN at 0°: 10° high at 9 pm FEB at 0°: -17° high at 9 pm MAR at 0°: -39° high at 9 pm APR at 0°: -58° high at 9 pm MAY at 0°: -56° high at 9 pm JUN at 0°: -36° high at 9 pm JUL at 0°: -11° high at 9 pm AUG at 0°: 15° high at 9 pm SEP at 0°: 40° high at 9 pm OCT at 0°: 58° high at 9 pm NOV at 0°: 56° high at 9 pm DEC at 0°: 36° high at 9 pm 10°S
JAN at 10°S: 15° high at 9 pm FEB at 10°S: -11° high at 9 pm MAR at 10°S: -33° high at 9 pm APR at 10°S: -49° high at 9 pm MAY at 10°S: -47° high at 9 pm JUN at 10°S: -30° high at 9 pm JUL at 10°S: -6° high at 9 pm AUG at 10°S: 20° high at 9 pm SEP at 10°S: 46° high at 9 pm OCT at 10°S: 67° high at 9 pm NOV at 10°S: 64° high at 9 pm DEC at 10°S: 41° high at 9 pm 20°S
JAN at 20°S: 19° high at 9 pm FEB at 20°S: -6° high at 9 pm MAR at 20°S: -25° high at 9 pm APR at 20°S: -39° high at 9 pm MAY at 20°S: -38° high at 9 pm JUN at 20°S: -23° high at 9 pm JUL at 20°S: -1° high at 9 pm AUG at 20°S: 25° high at 9 pm SEP at 20°S: 51° high at 9 pm OCT at 20°S: 75° high at 9 pm NOV at 20°S: 71° high at 9 pm DEC at 20°S: 46° high at 9 pm 30°S
JAN at 30°S: 23° high at 9 pm FEB at 30°S: -0° high at 9 pm MAR at 30°S: -18° high at 9 pm APR at 30°S: -29° high at 9 pm MAY at 30°S: -28° high at 9 pm JUN at 30°S: -15° high at 9 pm JUL at 30°S: 4° high at 9 pm AUG at 30°S: 28° high at 9 pm SEP at 30°S: 54° high at 9 pm OCT at 30°S: 79° high at 9 pm NOV at 30°S: 74° high at 9 pm DEC at 30°S: 49° high at 9 pm 40°S
JAN at 40°S: 27° high at 9 pm FEB at 40°S: 6° high at 9 pm MAR at 40°S: -10° high at 9 pm APR at 40°S: -20° high at 9 pm MAY at 40°S: -19° high at 9 pm JUN at 40°S: -8° high at 9 pm JUL at 40°S: 10° high at 9 pm AUG at 40°S: 31° high at 9 pm SEP at 40°S: 54° high at 9 pm OCT at 40°S: 75° high at 9 pm NOV at 40°S: 72° high at 9 pm DEC at 40°S: 50° 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 61°N, and never sets south of 61°S.
The distance to NGC 7645 is not well measured
No reliable distance has been measured for it yet.
Objects within 6° of NGC 7645
18 NGC and IC objects lie within 6°. The nearest that are brighter than magnitude 12.5 or have their own page:
NGC 7645 catalog data
Field Value
Constellation Sculptor Designations NGC 7645, ESO 470-003, 2MASX J23234727-2923170, ESO-LV 470-0030, MCG -05-55-007, PGC 071314 Type barred spiral galaxy (SBc) Right ascension (J2000) 23h 23.8m Declination (J2000) -29° 23′ Magnitude 13.0 Surface brightness 23.2 mag/arcmin² Apparent size 1.6′ × 1.1′ Position angle 1° Radial velocity 6,911 km/s, redshift 0.02332 Best with Large telescope Best month October Catalog page NGC 7501 to 8000
