NGC 4340 is a lenticular galaxy in Coma Berenices, 52 million light-years away
NGC 4340 is a lenticular galaxy in the constellation Coma Berenices , 52 million light-years away. It shines at magnitude 11.1 and spans 2.8′ × 1.8′ of sky, about 42,700 light-years across. It is a telescope object, 6 inches or larger, and it is highest in the evening sky in May.
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 4340 from Denebola
Denebola
NGC 4340
COMA BERENICES
NGC 4340 lies 8.6° east of Denebola , the magnitude 2.1 star. A fist held at arm's length covers about 10°.
NGC 4340 is highest in the evening in May
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
60°N
JAN at 60°N: 2° high at 9 pm FEB at 60°N: 17° high at 9 pm MAR at 60°N: 30° high at 9 pm APR at 60°N: 42° high at 9 pm MAY at 60°N: 47° high at 9 pm JUN at 60°N: 41° high at 9 pm JUL at 60°N: 28° high at 9 pm AUG at 60°N: 13° high at 9 pm SEP at 60°N: -1° high at 9 pm OCT at 60°N: -10° high at 9 pm NOV at 60°N: -13° high at 9 pm DEC at 60°N: -9° high at 9 pm 50°N
JAN at 50°N: -3° high at 9 pm FEB at 50°N: 15° high at 9 pm MAR at 50°N: 33° high at 9 pm APR at 50°N: 50° high at 9 pm MAY at 50°N: 57° high at 9 pm JUN at 50°N: 48° high at 9 pm JUL at 50°N: 31° high at 9 pm AUG at 50°N: 11° high at 9 pm SEP at 50°N: -7° high at 9 pm OCT at 50°N: -19° high at 9 pm NOV at 50°N: -23° high at 9 pm DEC at 50°N: -17° high at 9 pm 40°N
JAN at 40°N: -8° high at 9 pm FEB at 40°N: 14° high at 9 pm MAR at 40°N: 35° high at 9 pm APR at 40°N: 57° high at 9 pm MAY at 40°N: 67° high at 9 pm JUN at 40°N: 53° high at 9 pm JUL at 40°N: 32° high at 9 pm AUG at 40°N: 9° high at 9 pm SEP at 40°N: -13° high at 9 pm OCT at 40°N: -28° high at 9 pm NOV at 40°N: -33° high at 9 pm DEC at 40°N: -26° high at 9 pm 30°N
JAN at 30°N: -13° high at 9 pm FEB at 30°N: 12° high at 9 pm MAR at 30°N: 36° high at 9 pm APR at 30°N: 61° high at 9 pm MAY at 30°N: 77° high at 9 pm JUN at 30°N: 57° high at 9 pm JUL at 30°N: 32° high at 9 pm AUG at 30°N: 6° high at 9 pm SEP at 30°N: -18° high at 9 pm OCT at 30°N: -36° high at 9 pm NOV at 30°N: -43° high at 9 pm DEC at 30°N: -34° high at 9 pm 20°N
JAN at 20°N: -17° high at 9 pm FEB at 20°N: 9° high at 9 pm MAR at 20°N: 35° high at 9 pm APR at 20°N: 64° high at 9 pm MAY at 20°N: 86° high at 9 pm JUN at 20°N: 59° high at 9 pm JUL at 20°N: 31° high at 9 pm AUG at 20°N: 3° high at 9 pm SEP at 20°N: -23° high at 9 pm OCT at 20°N: -45° high at 9 pm NOV at 20°N: -53° high at 9 pm DEC at 20°N: -41° high at 9 pm 10°N
JAN at 10°N: -22° high at 9 pm FEB at 10°N: 7° high at 9 pm MAR at 10°N: 33° high at 9 pm APR at 10°N: 62° high at 9 pm MAY at 10°N: 83° high at 9 pm JUN at 10°N: 58° high at 9 pm JUL at 10°N: 29° high at 9 pm AUG at 10°N: 0° high at 9 pm SEP at 10°N: -28° high at 9 pm OCT at 10°N: -52° high at 9 pm NOV at 10°N: -63° high at 9 pm DEC at 10°N: -48° high at 9 pm 0°
JAN at 0°: -25° high at 9 pm FEB at 0°: 4° high at 9 pm MAR at 0°: 30° high at 9 pm APR at 0°: 58° high at 9 pm MAY at 0°: 73° high at 9 pm JUN at 0°: 54° high at 9 pm JUL at 0°: 27° high at 9 pm AUG at 0°: -3° high at 9 pm SEP at 0°: -32° high at 9 pm OCT at 0°: -58° high at 9 pm NOV at 0°: -73° high at 9 pm DEC at 0°: -54° high at 9 pm 10°S
JAN at 10°S: -28° high at 9 pm FEB at 10°S: 1° high at 9 pm MAR at 10°S: 27° high at 9 pm APR at 10°S: 52° high at 9 pm MAY at 10°S: 63° high at 9 pm JUN at 10°S: 48° high at 9 pm JUL at 10°S: 23° high at 9 pm AUG at 10°S: -5° high at 9 pm SEP at 10°S: -34° high at 9 pm OCT at 10°S: -63° high at 9 pm NOV at 10°S: -83° high at 9 pm DEC at 10°S: -57° high at 9 pm 20°S
JAN at 20°S: -30° high at 9 pm FEB at 20°S: -2° high at 9 pm MAR at 20°S: 22° high at 9 pm APR at 20°S: 44° high at 9 pm MAY at 20°S: 53° high at 9 pm JUN at 20°S: 41° high at 9 pm JUL at 20°S: 19° high at 9 pm AUG at 20°S: -8° high at 9 pm SEP at 20°S: -36° high at 9 pm OCT at 20°S: -64° high at 9 pm NOV at 20°S: -85° high at 9 pm DEC at 20°S: -59° high at 9 pm 30°S
JAN at 30°S: -31° high at 9 pm FEB at 30°S: -5° high at 9 pm MAR at 30°S: 17° high at 9 pm APR at 30°S: 36° high at 9 pm MAY at 30°S: 43° high at 9 pm JUN at 30°S: 34° high at 9 pm JUL at 30°S: 14° high at 9 pm AUG at 30°S: -10° high at 9 pm SEP at 30°S: -37° high at 9 pm OCT at 30°S: -62° high at 9 pm NOV at 30°S: -76° high at 9 pm DEC at 30°S: -57° high at 9 pm 40°S
JAN at 40°S: -31° high at 9 pm FEB at 40°S: -8° high at 9 pm MAR at 40°S: 12° high at 9 pm APR at 40°S: 28° high at 9 pm MAY at 40°S: 33° high at 9 pm JUN at 40°S: 26° high at 9 pm JUL at 40°S: 9° high at 9 pm AUG at 40°S: -13° high at 9 pm SEP at 40°S: -36° high at 9 pm OCT at 40°S: -57° high at 9 pm NOV at 40°S: -67° high at 9 pm DEC at 40°S: -53° 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 73°S, and never sets north of 73°N.
NGC 4340 is 52 million light-years away
The light seen from NGC 4340 tonight left it about 52 million years ago, long before modern humans existed. Distance source: Cosmicflows-4 (Tully et al. 2023).
Objects within 6° of NGC 4340
429 NGC and IC objects lie within 6°. The nearest that are brighter than magnitude 12.5 or have their own page:
NGC 4350, lenticular galaxy, 6′ NGC 4383, early spiral galaxy, 30′ NGC 4405, lenticular galaxy, 49′ M100 Messier 100, mixed spiral galaxy, 55′ NGC 4379, lenticular galaxy, 1.2° NGC 4312, early spiral galaxy, 1.2° NGC 4450, early spiral galaxy, 1.2° NGC 4421, lenticular galaxy, 1.5°
NGC 4340 catalog data
Field Value
Constellation Coma Berenices Designations NGC 4340, 2MASX J12233531+1643199, MCG +03-32-021, PGC 040245, SDSS J122335.28+164320.4, UGC 07467 Type lenticular galaxy (S0-a) Right ascension (J2000) 12h 23.6m Declination (J2000) +16° 43′ Magnitude 11.1 (B 12.0) Surface brightness 23.0 mag/arcmin² Apparent size 2.8′ × 1.8′ Position angle 87° True size 42,700 light-years Distance 52 million light-years (Cosmicflows-4 (Tully et al. 2023)) Radial velocity 919 km/s, redshift 0.00306 Best with Telescope Best month May Catalog page NGC 4001 to 4500
