IC 4593 is a planetary nebula in Hercules, 10,500 light-years away
IC 4593 (PK 25+40 1, PN G025.3+40.8) is a planetary nebula in the constellation Hercules , 10,500 light-years away. It shines at magnitude 10.7 and spans 40″ of sky, about 2.0 light-years across. It is a telescope object, 6 inches or larger, and it is highest in the evening sky in July.
Planetary nebula: a shell of gas thrown off by a dying Sun-like star and lit by the hot core left behind, which becomes a white dwarf. The name comes from their small, round, planet-like look in early telescopes.
Finding IC 4593 from Unukalhai
Unukalhai
IC 4593
HERCULES
IC 4593 lies 8.8° northeast of Unukalhai , the magnitude 2.6 star. A fist held at arm's length covers about 10°.
IC 4593 is highest in the evening in July
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
60°N
JAN at 60°N: -18° high at 9 pm FEB at 60°N: -12° high at 9 pm MAR at 60°N: -2° high at 9 pm APR at 60°N: 13° high at 9 pm MAY at 60°N: 27° high at 9 pm JUN at 60°N: 39° high at 9 pm JUL at 60°N: 42° high at 9 pm AUG at 60°N: 35° high at 9 pm SEP at 60°N: 22° high at 9 pm OCT at 60°N: 8° high at 9 pm NOV at 60°N: -6° high at 9 pm DEC at 60°N: -15° high at 9 pm 50°N
JAN at 50°N: -28° high at 9 pm FEB at 50°N: -20° high at 9 pm MAR at 50°N: -6° high at 9 pm APR at 50°N: 13° high at 9 pm MAY at 50°N: 31° high at 9 pm JUN at 50°N: 47° high at 9 pm JUL at 50°N: 52° high at 9 pm AUG at 50°N: 42° high at 9 pm SEP at 50°N: 24° high at 9 pm OCT at 50°N: 6° high at 9 pm NOV at 50°N: -12° high at 9 pm DEC at 50°N: -24° high at 9 pm 40°N
JAN at 40°N: -38° high at 9 pm FEB at 40°N: -28° high at 9 pm MAR at 40°N: -11° high at 9 pm APR at 40°N: 12° high at 9 pm MAY at 40°N: 34° high at 9 pm JUN at 40°N: 55° high at 9 pm JUL at 40°N: 62° high at 9 pm AUG at 40°N: 48° high at 9 pm SEP at 40°N: 26° high at 9 pm OCT at 40°N: 3° high at 9 pm NOV at 40°N: -18° high at 9 pm DEC at 40°N: -33° high at 9 pm 30°N
JAN at 30°N: -47° high at 9 pm FEB at 30°N: -35° high at 9 pm MAR at 30°N: -15° high at 9 pm APR at 30°N: 11° high at 9 pm MAY at 30°N: 36° high at 9 pm JUN at 30°N: 61° high at 9 pm JUL at 30°N: 71° high at 9 pm AUG at 30°N: 52° high at 9 pm SEP at 30°N: 27° high at 9 pm OCT at 30°N: 1° high at 9 pm NOV at 30°N: -23° high at 9 pm DEC at 30°N: -42° high at 9 pm 20°N
JAN at 20°N: -57° high at 9 pm FEB at 20°N: -41° high at 9 pm MAR at 20°N: -19° high at 9 pm APR at 20°N: 9° high at 9 pm MAY at 20°N: 37° high at 9 pm JUN at 20°N: 65° high at 9 pm JUL at 20°N: 81° high at 9 pm AUG at 20°N: 55° high at 9 pm SEP at 20°N: 26° high at 9 pm OCT at 20°N: -1° high at 9 pm NOV at 20°N: -28° high at 9 pm DEC at 20°N: -50° high at 9 pm 10°N
JAN at 10°N: -67° high at 9 pm FEB at 10°N: -47° high at 9 pm MAR at 10°N: -22° high at 9 pm APR at 10°N: 7° high at 9 pm MAY at 10°N: 36° high at 9 pm JUN at 10°N: 66° high at 9 pm JUL at 10°N: 85° high at 9 pm AUG at 10°N: 55° high at 9 pm SEP at 10°N: 25° high at 9 pm OCT at 10°N: -3° high at 9 pm NOV at 10°N: -32° high at 9 pm DEC at 10°N: -57° high at 9 pm 0°
JAN at 0°: -76° high at 9 pm FEB at 0°: -51° high at 9 pm MAR at 0°: -25° high at 9 pm APR at 0°: 5° high at 9 pm MAY at 0°: 34° high at 9 pm JUN at 0°: 63° high at 9 pm JUL at 0°: 77° high at 9 pm AUG at 0°: 53° high at 9 pm SEP at 0°: 23° high at 9 pm OCT at 0°: -6° high at 9 pm NOV at 0°: -35° high at 9 pm DEC at 0°: -63° high at 9 pm 10°S
JAN at 10°S: -83° high at 9 pm FEB at 10°S: -53° high at 9 pm MAR at 10°S: -27° high at 9 pm APR at 10°S: 3° high at 9 pm MAY at 10°S: 31° high at 9 pm JUN at 10°S: 57° high at 9 pm JUL at 10°S: 67° high at 9 pm AUG at 10°S: 48° high at 9 pm SEP at 10°S: 21° high at 9 pm OCT at 10°S: -8° high at 9 pm NOV at 10°S: -37° high at 9 pm DEC at 10°S: -66° high at 9 pm 20°S
JAN at 20°S: -80° high at 9 pm FEB at 20°S: -53° high at 9 pm MAR at 20°S: -28° high at 9 pm APR at 20°S: 1° high at 9 pm MAY at 20°S: 27° high at 9 pm JUN at 20°S: 50° high at 9 pm JUL at 20°S: 58° high at 9 pm AUG at 20°S: 43° high at 9 pm SEP at 20°S: 17° high at 9 pm OCT at 20°S: -9° high at 9 pm NOV at 20°S: -38° high at 9 pm DEC at 20°S: -66° high at 9 pm 30°S
JAN at 30°S: -71° high at 9 pm FEB at 30°S: -51° high at 9 pm MAR at 30°S: -28° high at 9 pm APR at 30°S: -1° high at 9 pm MAY at 30°S: 22° high at 9 pm JUN at 30°S: 42° high at 9 pm JUL at 30°S: 48° high at 9 pm AUG at 30°S: 36° high at 9 pm SEP at 30°S: 14° high at 9 pm OCT at 30°S: -11° high at 9 pm NOV at 30°S: -37° high at 9 pm DEC at 30°S: -61° high at 9 pm 40°S
JAN at 40°S: -61° high at 9 pm FEB at 40°S: -47° high at 9 pm MAR at 40°S: -27° high at 9 pm APR at 40°S: -4° high at 9 pm MAY at 40°S: 17° high at 9 pm JUN at 40°S: 33° high at 9 pm JUL at 40°S: 38° high at 9 pm AUG at 40°S: 28° high at 9 pm SEP at 40°S: 10° high at 9 pm OCT at 40°S: -12° high at 9 pm NOV at 40°S: -35° high at 9 pm DEC at 40°S: -55° 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 78°S, and never sets north of 78°N.
IC 4593 is 10,500 light-years away
The light seen from IC 4593 tonight left it about 10,500 years ago. Distance source: Statistical distance, Stanghellini et al. 2008 (3225 pc).
Objects within 6° of IC 4593
73 NGC and IC objects lie within 6°. The nearest that are brighter than magnitude 12.5 or have their own page:
NGC 6049, star, 4.2° NGC 6012, barred spiral galaxy, 5.0° NGC 6106, late spiral galaxy, 5.0° NGC 6050, late spiral galaxy, 5.9° NGC 6041, galaxy pair, 5.9° NGC 6040, galaxy pair, 5.9°
IC 4593 catalog data
Field Value
Constellation Hercules Designations IC 4593, PK 25+40 1, PN G025.3+40.8, TYC 953-381-1 Type planetary nebula Right ascension (J2000) 16h 11.7m Declination (J2000) +12° 04′ Magnitude 10.7 (B 10.0) Apparent size 40″ True size 2.0 light-years Distance 10,500 light-years (Statistical distance, Stanghellini et al. 2008 (3225 pc)) Radial velocity 22 km/s Central star HD 145649, magnitude 11.0 Best with Telescope Best month July Catalog page IC 4501 to 5000
