NGC 6891 is a planetary nebula in Delphinus, 11,800 light-years away
NGC 6891 is a planetary nebula in the constellation Delphinus , 11,800 light-years away. It shines at magnitude 10.5 and spans 15″ of sky, about 0.9 light-years across. It is a telescope object, 6 inches or larger, and it is highest in the evening sky in September.
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 NGC 6891 from Altair
Altair
NGC 6891
DELPHINUS
NGC 6891 lies 7.1° northeast of Altair , the magnitude 0.8 star. Three fingers held at arm's length cover about 5°.
NGC 6891 is highest in the evening in September
JAN
FEB
MAR
APR
MAY
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JUL
AUG
SEP
OCT
NOV
DEC
60°N
JAN at 60°N: -5° high at 9 pm FEB at 60°N: -15° high at 9 pm MAR at 60°N: -17° high at 9 pm APR at 60°N: -12° high at 9 pm MAY at 60°N: -1° high at 9 pm JUN at 60°N: 13° high at 9 pm JUL at 60°N: 28° high at 9 pm AUG at 60°N: 39° high at 9 pm SEP at 60°N: 43° high at 9 pm OCT at 60°N: 36° high at 9 pm NOV at 60°N: 23° high at 9 pm DEC at 60°N: 9° high at 9 pm 50°N
JAN at 50°N: -11° high at 9 pm FEB at 50°N: -24° high at 9 pm MAR at 50°N: -27° high at 9 pm APR at 50°N: -20° high at 9 pm MAY at 50°N: -6° high at 9 pm JUN at 50°N: 13° high at 9 pm JUL at 50°N: 31° high at 9 pm AUG at 50°N: 47° high at 9 pm SEP at 50°N: 52° high at 9 pm OCT at 50°N: 43° high at 9 pm NOV at 50°N: 25° high at 9 pm DEC at 50°N: 7° high at 9 pm 40°N
JAN at 40°N: -17° high at 9 pm FEB at 40°N: -33° high at 9 pm MAR at 40°N: -37° high at 9 pm APR at 40°N: -28° high at 9 pm MAY at 40°N: -11° high at 9 pm JUN at 40°N: 12° high at 9 pm JUL at 40°N: 34° high at 9 pm AUG at 40°N: 55° high at 9 pm SEP at 40°N: 62° high at 9 pm OCT at 40°N: 49° high at 9 pm NOV at 40°N: 27° high at 9 pm DEC at 40°N: 4° high at 9 pm 30°N
JAN at 30°N: -23° high at 9 pm FEB at 30°N: -42° high at 9 pm MAR at 30°N: -47° high at 9 pm APR at 30°N: -36° high at 9 pm MAY at 30°N: -15° high at 9 pm JUN at 30°N: 10° high at 9 pm JUL at 30°N: 36° high at 9 pm AUG at 30°N: 61° high at 9 pm SEP at 30°N: 72° high at 9 pm OCT at 30°N: 53° high at 9 pm NOV at 30°N: 27° high at 9 pm DEC at 30°N: 2° high at 9 pm 20°N
JAN at 20°N: -27° high at 9 pm FEB at 20°N: -50° high at 9 pm MAR at 20°N: -57° high at 9 pm APR at 20°N: -43° high at 9 pm MAY at 20°N: -19° high at 9 pm JUN at 20°N: 9° high at 9 pm JUL at 20°N: 36° high at 9 pm AUG at 20°N: 65° high at 9 pm SEP at 20°N: 81° high at 9 pm OCT at 20°N: 56° high at 9 pm NOV at 20°N: 27° high at 9 pm DEC at 20°N: -0° high at 9 pm 10°N
JAN at 10°N: -32° high at 9 pm FEB at 10°N: -57° high at 9 pm MAR at 10°N: -67° high at 9 pm APR at 10°N: -49° high at 9 pm MAY at 10°N: -22° high at 9 pm JUN at 10°N: 7° high at 9 pm JUL at 10°N: 35° high at 9 pm AUG at 10°N: 65° high at 9 pm SEP at 10°N: 84° high at 9 pm OCT at 10°N: 56° high at 9 pm NOV at 10°N: 26° high at 9 pm DEC at 10°N: -3° high at 9 pm 0°
JAN at 0°: -35° high at 9 pm FEB at 0°: -63° high at 9 pm MAR at 0°: -77° high at 9 pm APR at 0°: -54° high at 9 pm MAY at 0°: -25° high at 9 pm JUN at 0°: 5° high at 9 pm JUL at 0°: 33° high at 9 pm AUG at 0°: 62° high at 9 pm SEP at 0°: 76° high at 9 pm OCT at 0°: 53° high at 9 pm NOV at 0°: 24° high at 9 pm DEC at 0°: -5° high at 9 pm 10°S
JAN at 10°S: -37° high at 9 pm FEB at 10°S: -67° high at 9 pm MAR at 10°S: -85° high at 9 pm APR at 10°S: -56° high at 9 pm MAY at 10°S: -27° high at 9 pm JUN at 10°S: 2° high at 9 pm JUL at 10°S: 30° high at 9 pm AUG at 10°S: 56° high at 9 pm SEP at 10°S: 67° high at 9 pm OCT at 10°S: 49° high at 9 pm NOV at 10°S: 21° high at 9 pm DEC at 10°S: -7° high at 9 pm 20°S
JAN at 20°S: -38° high at 9 pm FEB at 20°S: -66° high at 9 pm MAR at 20°S: -82° high at 9 pm APR at 20°S: -56° high at 9 pm MAY at 20°S: -28° high at 9 pm JUN at 20°S: -0° high at 9 pm JUL at 20°S: 26° high at 9 pm AUG at 20°S: 49° high at 9 pm SEP at 20°S: 57° high at 9 pm OCT at 20°S: 43° high at 9 pm NOV at 20°S: 18° high at 9 pm DEC at 20°S: -9° high at 9 pm 30°S
JAN at 30°S: -37° high at 9 pm FEB at 30°S: -62° high at 9 pm MAR at 30°S: -72° high at 9 pm APR at 30°S: -54° high at 9 pm MAY at 30°S: -29° high at 9 pm JUN at 30°S: -2° high at 9 pm JUL at 30°S: 21° high at 9 pm AUG at 30°S: 41° high at 9 pm SEP at 30°S: 47° high at 9 pm OCT at 30°S: 36° high at 9 pm NOV at 30°S: 14° high at 9 pm DEC at 30°S: -11° high at 9 pm 40°S
JAN at 40°S: -35° high at 9 pm FEB at 40°S: -56° high at 9 pm MAR at 40°S: -62° high at 9 pm APR at 40°S: -49° high at 9 pm MAY at 40°S: -28° high at 9 pm JUN at 40°S: -5° high at 9 pm JUL at 40°S: 16° high at 9 pm AUG at 40°S: 32° high at 9 pm SEP at 40°S: 37° high at 9 pm OCT at 40°S: 28° high at 9 pm NOV at 40°S: 10° high at 9 pm DEC at 40°S: -12° 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 77°S, and never sets north of 77°N.
NGC 6891 is 11,800 light-years away
The light seen from NGC 6891 tonight left it about 11,800 years ago. Distance source: Statistical distance, Stanghellini et al. 2008 (3613 pc).
Objects within 6° of NGC 6891
13 NGC and IC objects lie within 6°. The nearest that are brighter than magnitude 12.5 or have their own page:
NGC 6891 catalog data
Field Value
Constellation Delphinus Designations NGC 6891, 2MASX J20150883+1242159, IRAS 20127+1233, PN G054.1-12.1 Type planetary nebula Right ascension (J2000) 20h 15.1m Declination (J2000) +12° 42′ Magnitude 10.5 (B 11.0) Apparent size 15″ True size 0.9 light-years Distance 11,800 light-years (Statistical distance, Stanghellini et al. 2008 (3613 pc)) Radial velocity 42 km/s Central star HD 192563, magnitude 12.0 Best with Telescope Best month September Catalog page NGC 6501 to 7000
