NGC 2921 is a mixed spiral galaxy in Hydra, 155 million light-years away
NGC 2921 (ESO 565-017) is a mixed spiral galaxy in the constellation Hydra , 155 million light-years away. It shines at magnitude 12.0 and spans 2.9′ × 55″ of sky, about 128,900 light-years across. It is a telescope object, 6 inches or larger, and it is highest in the evening sky in April.
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 2921 from Alphard
Alphard
NGC 2921
HYDRA
NGC 2921 lies 12.4° south of Alphard , the magnitude 2.0 star. A fist held at arm's length covers about 10°.
NGC 2921 is highest in the evening in April
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60°N
JAN at 60°N: -10° high at 9 pm FEB at 60°N: 2° high at 9 pm MAR at 60°N: 8° high at 9 pm APR at 60°N: 8° high at 9 pm MAY at 60°N: 1° high at 9 pm JUN at 60°N: -11° high at 9 pm JUL at 60°N: -25° high at 9 pm AUG at 60°N: -40° high at 9 pm SEP at 60°N: -50° high at 9 pm OCT at 60°N: -49° high at 9 pm NOV at 60°N: -40° high at 9 pm DEC at 60°N: -25° high at 9 pm 50°N
JAN at 50°N: -6° high at 9 pm FEB at 50°N: 9° high at 9 pm MAR at 50°N: 18° high at 9 pm APR at 50°N: 18° high at 9 pm MAY at 50°N: 9° high at 9 pm JUN at 50°N: -7° high at 9 pm JUL at 50°N: -25° high at 9 pm AUG at 50°N: -44° high at 9 pm SEP at 50°N: -59° high at 9 pm OCT at 50°N: -59° high at 9 pm NOV at 50°N: -44° high at 9 pm DEC at 50°N: -25° high at 9 pm 40°N
JAN at 40°N: -2° high at 9 pm FEB at 40°N: 17° high at 9 pm MAR at 40°N: 27° high at 9 pm APR at 40°N: 28° high at 9 pm MAY at 40°N: 16° high at 9 pm JUN at 40°N: -2° high at 9 pm JUL at 40°N: -24° high at 9 pm AUG at 40°N: -47° high at 9 pm SEP at 40°N: -67° high at 9 pm OCT at 40°N: -67° high at 9 pm NOV at 40°N: -47° high at 9 pm DEC at 40°N: -24° high at 9 pm 30°N
JAN at 30°N: 3° high at 9 pm FEB at 30°N: 24° high at 9 pm MAR at 30°N: 37° high at 9 pm APR at 30°N: 37° high at 9 pm MAY at 30°N: 24° high at 9 pm JUN at 30°N: 2° high at 9 pm JUL at 30°N: -22° high at 9 pm AUG at 30°N: -49° high at 9 pm SEP at 30°N: -74° high at 9 pm OCT at 30°N: -74° high at 9 pm NOV at 30°N: -48° high at 9 pm DEC at 30°N: -23° high at 9 pm 20°N
JAN at 20°N: 7° high at 9 pm FEB at 20°N: 31° high at 9 pm MAR at 20°N: 46° high at 9 pm APR at 20°N: 47° high at 9 pm MAY at 20°N: 30° high at 9 pm JUN at 20°N: 6° high at 9 pm JUL at 20°N: -20° high at 9 pm AUG at 20°N: -48° high at 9 pm SEP at 20°N: -76° high at 9 pm OCT at 20°N: -76° high at 9 pm NOV at 20°N: -47° high at 9 pm DEC at 20°N: -20° high at 9 pm 10°N
JAN at 10°N: 11° high at 9 pm FEB at 10°N: 37° high at 9 pm MAR at 10°N: 55° high at 9 pm APR at 10°N: 56° high at 9 pm MAY at 10°N: 37° high at 9 pm JUN at 10°N: 10° high at 9 pm JUL at 10°N: -17° high at 9 pm AUG at 10°N: -45° 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: -45° high at 9 pm DEC at 10°N: -17° high at 9 pm 0°
JAN at 0°: 15° high at 9 pm FEB at 0°: 43° high at 9 pm MAR at 0°: 64° high at 9 pm APR at 0°: 65° high at 9 pm MAY at 0°: 42° high at 9 pm JUN at 0°: 14° high at 9 pm JUL at 0°: -13° high at 9 pm AUG at 0°: -41° high at 9 pm SEP at 0°: -65° high at 9 pm OCT at 0°: -64° high at 9 pm NOV at 0°: -41° high at 9 pm DEC at 0°: -14° high at 9 pm 10°S
JAN at 10°S: 18° high at 9 pm FEB at 10°S: 47° 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: 46° high at 9 pm JUN at 10°S: 18° high at 9 pm JUL at 10°S: -10° high at 9 pm AUG at 10°S: -36° high at 9 pm SEP at 10°S: -56° high at 9 pm OCT at 10°S: -56° high at 9 pm NOV at 10°S: -36° high at 9 pm DEC at 10°S: -10° high at 9 pm 20°S
JAN at 20°S: 21° high at 9 pm FEB at 20°S: 49° high at 9 pm MAR at 20°S: 75° high at 9 pm APR at 20°S: 76° high at 9 pm MAY at 20°S: 49° high at 9 pm JUN at 20°S: 21° high at 9 pm JUL at 20°S: -5° high at 9 pm AUG at 20°S: -30° high at 9 pm SEP at 20°S: -47° high at 9 pm OCT at 20°S: -47° high at 9 pm NOV at 20°S: -29° high at 9 pm DEC at 20°S: -6° high at 9 pm 30°S
JAN at 30°S: 24° high at 9 pm FEB at 30°S: 50° high at 9 pm MAR at 30°S: 73° high at 9 pm APR at 30°S: 74° high at 9 pm MAY at 30°S: 49° high at 9 pm JUN at 30°S: 23° high at 9 pm JUL at 30°S: -1° high at 9 pm AUG at 30°S: -23° high at 9 pm SEP at 30°S: -37° high at 9 pm OCT at 30°S: -37° high at 9 pm NOV at 30°S: -23° high at 9 pm DEC at 30°S: -2° high at 9 pm 40°S
JAN at 40°S: 25° high at 9 pm FEB at 40°S: 48° high at 9 pm MAR at 40°S: 67° high at 9 pm APR at 40°S: 67° high at 9 pm MAY at 40°S: 48° high at 9 pm JUN at 40°S: 25° high at 9 pm JUL at 40°S: 3° high at 9 pm AUG at 40°S: -16° high at 9 pm SEP at 40°S: -28° high at 9 pm OCT at 40°S: -27° high at 9 pm NOV at 40°S: -16° high at 9 pm DEC at 40°S: 3° 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 69°N, and never sets south of 69°S.
NGC 2921 is 155 million light-years away
The light seen from NGC 2921 tonight left it about 155 million years ago, long before modern humans existed. Distance source: Cosmicflows-4 (Tully et al. 2023).
Objects within 6° of NGC 2921
27 NGC and IC objects lie within 6°. The nearest that are brighter than magnitude 12.5 or have their own page:
NGC 2935, spiral galaxy, 34′ NGC 2983, lenticular galaxy, 2.2° NGC 2986, elliptical galaxy, 2.3° NGC 2865, elliptical galaxy, 3.4° NGC 2835, late spiral galaxy, 4.1° NGC 2907, early spiral galaxy, 4.2° NGC 2815, barred spiral galaxy, 5.0° NGC 3052, mixed spiral galaxy, 5.2°
NGC 2921 catalog data
Field Value
Constellation Hydra Designations NGC 2921, ESO 565-017, 2MASX J09343160-2055134, ESO-LV 565-0170, IRAS 09321-2041, MCG -03-25-006, PGC 027214 Type mixed spiral galaxy (SABa) Right ascension (J2000) 09h 34.5m Declination (J2000) -20° 55′ Magnitude 12.0 Surface brightness 23.5 mag/arcmin² Apparent size 2.9′ × 55″ Position angle 85° True size 128,900 light-years Distance 155 million light-years (Cosmicflows-4 (Tully et al. 2023)) Radial velocity 2,954 km/s, redshift 0.0099 Best with Telescope Best month April Catalog page NGC 2501 to 3000
