NGC 991 is a mixed spiral galaxy in Cetus
NGC 991 is a mixed spiral galaxy in the constellation Cetus . It shines at magnitude 12.0 and spans 1.5′ × 1.3′. It is a telescope object, 6 inches or larger, and it is highest in the evening sky in December.
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 991 from Kaffaljidhma
Kaffaljidhma
NGC 991
CETUS
NGC 991 lies 10.6° south of Kaffaljidhma , the magnitude 3.5 star. A fist held at arm's length covers about 10°.
NGC 991 is highest in the evening in December
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
60°N
JAN at 60°N: 19° high at 9 pm FEB at 60°N: 8° high at 9 pm MAR at 60°N: -6° high at 9 pm APR at 60°N: -21° high at 9 pm MAY at 60°N: -32° high at 9 pm JUN at 60°N: -37° high at 9 pm JUL at 60°N: -33° high at 9 pm AUG at 60°N: -21° high at 9 pm SEP at 60°N: -6° high at 9 pm OCT at 60°N: 8° high at 9 pm NOV at 60°N: 19° high at 9 pm DEC at 60°N: 23° high at 9 pm 50°N
JAN at 50°N: 27° high at 9 pm FEB at 50°N: 12° high at 9 pm MAR at 50°N: -5° high at 9 pm APR at 50°N: -24° high at 9 pm MAY at 50°N: -40° high at 9 pm JUN at 50°N: -47° high at 9 pm JUL at 50°N: -41° high at 9 pm AUG at 50°N: -25° high at 9 pm SEP at 50°N: -5° high at 9 pm OCT at 50°N: 13° high at 9 pm NOV at 50°N: 27° high at 9 pm DEC at 50°N: 33° high at 9 pm 40°N
JAN at 40°N: 35° high at 9 pm FEB at 40°N: 17° high at 9 pm MAR at 40°N: -4° high at 9 pm APR at 40°N: -27° high at 9 pm MAY at 40°N: -47° high at 9 pm JUN at 40°N: -57° high at 9 pm JUL at 40°N: -48° high at 9 pm AUG at 40°N: -28° high at 9 pm SEP at 40°N: -4° high at 9 pm OCT at 40°N: 17° high at 9 pm NOV at 40°N: 35° high at 9 pm DEC at 40°N: 43° high at 9 pm 30°N
JAN at 30°N: 43° high at 9 pm FEB at 30°N: 21° high at 9 pm MAR at 30°N: -3° high at 9 pm APR at 30°N: -29° high at 9 pm MAY at 30°N: -53° high at 9 pm JUN at 30°N: -67° high at 9 pm JUL at 30°N: -54° high at 9 pm AUG at 30°N: -30° high at 9 pm SEP at 30°N: -3° high at 9 pm OCT at 30°N: 21° high at 9 pm NOV at 30°N: 43° high at 9 pm DEC at 30°N: 53° high at 9 pm 20°N
JAN at 20°N: 49° high at 9 pm FEB at 20°N: 24° high at 9 pm MAR at 20°N: -1° high at 9 pm APR at 20°N: -30° high at 9 pm MAY at 20°N: -57° high at 9 pm JUN at 20°N: -77° high at 9 pm JUL at 20°N: -59° high at 9 pm AUG at 20°N: -31° high at 9 pm SEP at 20°N: -2° high at 9 pm OCT at 20°N: 25° high at 9 pm NOV at 20°N: 50° high at 9 pm DEC at 20°N: 63° high at 9 pm 10°N
JAN at 10°N: 55° high at 9 pm FEB at 10°N: 27° high at 9 pm MAR at 10°N: -0° high at 9 pm APR at 10°N: -30° high at 9 pm MAY at 10°N: -59° high at 9 pm JUN at 10°N: -87° high at 9 pm JUL at 10°N: -61° high at 9 pm AUG at 10°N: -31° high at 9 pm SEP at 10°N: -1° high at 9 pm OCT at 10°N: 28° high at 9 pm NOV at 10°N: 56° high at 9 pm DEC at 10°N: 73° high at 9 pm 0°
JAN at 0°: 59° high at 9 pm FEB at 0°: 29° high at 9 pm MAR at 0°: 1° high at 9 pm APR at 0°: -29° high at 9 pm MAY at 0°: -58° high at 9 pm JUN at 0°: -83° high at 9 pm JUL at 0°: -60° high at 9 pm AUG at 0°: -30° high at 9 pm SEP at 0°: 0° high at 9 pm OCT at 0°: 30° high at 9 pm NOV at 0°: 60° high at 9 pm DEC at 0°: 83° high at 9 pm 10°S
JAN at 10°S: 60° high at 9 pm FEB at 10°S: 29° high at 9 pm MAR at 10°S: 2° high at 9 pm APR at 10°S: -27° high at 9 pm MAY at 10°S: -55° high at 9 pm JUN at 10°S: -73° high at 9 pm JUL at 10°S: -56° high at 9 pm AUG at 10°S: -28° high at 9 pm SEP at 10°S: 1° high at 9 pm OCT at 10°S: 30° high at 9 pm NOV at 10°S: 61° high at 9 pm DEC at 10°S: 87° high at 9 pm 20°S
JAN at 20°S: 58° high at 9 pm FEB at 20°S: 29° high at 9 pm MAR at 20°S: 4° high at 9 pm APR at 20°S: -25° high at 9 pm MAY at 20°S: -49° high at 9 pm JUN at 20°S: -63° high at 9 pm JUL at 20°S: -51° high at 9 pm AUG at 20°S: -25° high at 9 pm SEP at 20°S: 3° high at 9 pm OCT at 20°S: 30° high at 9 pm NOV at 20°S: 59° high at 9 pm DEC at 20°S: 77° high at 9 pm 30°S
JAN at 30°S: 53° high at 9 pm FEB at 30°S: 28° high at 9 pm MAR at 30°S: 5° high at 9 pm APR at 30°S: -21° high at 9 pm MAY at 30°S: -42° high at 9 pm JUN at 30°S: -53° high at 9 pm JUL at 30°S: -44° high at 9 pm AUG at 30°S: -22° high at 9 pm SEP at 30°S: 4° high at 9 pm OCT at 30°S: 29° high at 9 pm NOV at 30°S: 54° high at 9 pm DEC at 30°S: 67° high at 9 pm 40°S
JAN at 40°S: 47° high at 9 pm FEB at 40°S: 26° high at 9 pm MAR at 40°S: 5° high at 9 pm APR at 40°S: -17° high at 9 pm MAY at 40°S: -35° high at 9 pm JUN at 40°S: -43° high at 9 pm JUL at 40°S: -36° high at 9 pm AUG at 40°S: -18° high at 9 pm SEP at 40°S: 5° high at 9 pm OCT at 40°S: 27° high at 9 pm NOV at 40°S: 48° high at 9 pm DEC at 40°S: 57° 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 83°N.
The distance to NGC 991 is not well measured
No reliable distance has been measured for it yet.
Objects within 6° of NGC 991
62 NGC and IC objects lie within 6°. The nearest that are brighter than magnitude 12.5 or have their own page:
NGC 1022, barred spiral galaxy, 53′ NGC 1035, late spiral galaxy, 1.4° NGC 1042, mixed spiral galaxy, 1.8° NGC 1052, elliptical galaxy, 1.8° NGC 988, late spiral galaxy, 2.2° NGC 1084, late spiral galaxy, 2.6° NGC 945, barred spiral galaxy, 3.8° NGC 895, late spiral galaxy, 3.8°
NGC 991 catalog data
Field Value
Constellation Cetus Designations NGC 991, 2MASX J02353199-0709366, IRAS 02330-0722, MCG -01-07-023, PGC 009846, SDSS J023532.68-070915.9, SDSS J023532.68-070916.0 Type mixed spiral galaxy (SABc) Right ascension (J2000) 02h 35.5m Declination (J2000) -07° 09′ Magnitude 12.0 Surface brightness 22.5 mag/arcmin² Apparent size 1.5′ × 1.3′ Position angle 75° Radial velocity 1,554 km/s, redshift 0.00519 Best with Telescope Best month December Catalog page NGC 501 to 1000
