NGC 752 is an open cluster in Andromeda, 1,410 light-years away
NGC 752 (Caldwell 28, Herschel 400 no. 31) is an open cluster in the constellation Andromeda , 1,410 light-years away. It shines at magnitude 5.7 and spans 50′ of sky, about 21 light-years across. It is just visible to the naked eye from a dark site, and it is highest in the evening sky in December.
Open cluster: a loose group of a few dozen to a few thousand young stars born together from one cloud of gas. They drift apart over a few hundred million years and lie in the disk of the Milky Way.
Finding NGC 752 from Almach
Almach
NGC 752
ANDROMEDA
NGC 752 lies 4.7° south of Almach , the magnitude 2.1 star. Three fingers held at arm's length cover about 5°.
NGC 752 is highest in the evening in December
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60°N
JAN at 60°N: 56° high at 9 pm FEB at 60°N: 41° high at 9 pm MAR at 60°N: 28° high at 9 pm APR at 60°N: 16° high at 9 pm MAY at 60°N: 9° high at 9 pm JUN at 60°N: 8° high at 9 pm JUL at 60°N: 13° high at 9 pm AUG at 60°N: 23° high at 9 pm SEP at 60°N: 37° high at 9 pm OCT at 60°N: 51° high at 9 pm NOV at 60°N: 64° high at 9 pm DEC at 60°N: 67° high at 9 pm 50°N
JAN at 50°N: 59° high at 9 pm FEB at 50°N: 40° high at 9 pm MAR at 50°N: 23° high at 9 pm APR at 50°N: 9° high at 9 pm MAY at 50°N: -0° high at 9 pm JUN at 50°N: -2° high at 9 pm JUL at 50°N: 4° high at 9 pm AUG at 50°N: 17° high at 9 pm SEP at 50°N: 34° high at 9 pm OCT at 50°N: 52° high at 9 pm NOV at 50°N: 71° high at 9 pm DEC at 50°N: 76° high at 9 pm 40°N
JAN at 40°N: 59° high at 9 pm FEB at 40°N: 36° high at 9 pm MAR at 40°N: 18° high at 9 pm APR at 40°N: 1° high at 9 pm MAY at 40°N: -10° high at 9 pm JUN at 40°N: -12° high at 9 pm JUL at 40°N: -5° high at 9 pm AUG at 40°N: 10° high at 9 pm SEP at 40°N: 30° high at 9 pm OCT at 40°N: 51° high at 9 pm NOV at 40°N: 74° high at 9 pm DEC at 40°N: 82° high at 9 pm 30°N
JAN at 30°N: 56° high at 9 pm FEB at 30°N: 32° high at 9 pm MAR at 30°N: 12° high at 9 pm APR at 30°N: -7° high at 9 pm MAY at 30°N: -19° high at 9 pm JUN at 30°N: -22° high at 9 pm JUL at 30°N: -13° high at 9 pm AUG at 30°N: 4° high at 9 pm SEP at 30°N: 25° high at 9 pm OCT at 30°N: 48° high at 9 pm NOV at 30°N: 72° high at 9 pm DEC at 30°N: 79° high at 9 pm 20°N
JAN at 20°N: 51° high at 9 pm FEB at 20°N: 27° high at 9 pm MAR at 20°N: 6° high at 9 pm APR at 20°N: -15° high at 9 pm MAY at 20°N: -29° high at 9 pm JUN at 20°N: -32° high at 9 pm JUL at 20°N: -22° high at 9 pm AUG at 20°N: -3° high at 9 pm SEP at 20°N: 20° high at 9 pm OCT at 20°N: 43° high at 9 pm NOV at 20°N: 65° high at 9 pm DEC at 20°N: 70° high at 9 pm 10°N
JAN at 10°N: 44° high at 9 pm FEB at 10°N: 21° high at 9 pm MAR at 10°N: -0° high at 9 pm APR at 10°N: -22° high at 9 pm MAY at 10°N: -38° high at 9 pm JUN at 10°N: -41° high at 9 pm JUL at 10°N: -30° high at 9 pm AUG at 10°N: -10° high at 9 pm SEP at 10°N: 14° high at 9 pm OCT at 10°N: 37° high at 9 pm NOV at 10°N: 57° high at 9 pm DEC at 10°N: 61° high at 9 pm 0°
JAN at 0°: 37° high at 9 pm FEB at 0°: 15° high at 9 pm MAR at 0°: -7° high at 9 pm APR at 0°: -30° high at 9 pm MAY at 0°: -47° high at 9 pm JUN at 0°: -51° high at 9 pm JUL at 0°: -38° high at 9 pm AUG at 0°: -16° high at 9 pm SEP at 0°: 8° high at 9 pm OCT at 0°: 30° high at 9 pm NOV at 0°: 48° high at 9 pm DEC at 0°: 51° high at 9 pm 10°S
JAN at 10°S: 29° high at 9 pm FEB at 10°S: 9° high at 9 pm MAR at 10°S: -13° high at 9 pm APR at 10°S: -36° high at 9 pm MAY at 10°S: -56° high at 9 pm JUN at 10°S: -61° high at 9 pm JUL at 10°S: -46° high at 9 pm AUG at 10°S: -23° high at 9 pm SEP at 10°S: 1° high at 9 pm OCT at 10°S: 23° high at 9 pm NOV at 10°S: 39° high at 9 pm DEC at 10°S: 41° high at 9 pm 20°S
JAN at 20°S: 21° high at 9 pm FEB at 20°S: 2° high at 9 pm MAR at 20°S: -19° high at 9 pm APR at 20°S: -43° high at 9 pm MAY at 20°S: -64° high at 9 pm JUN at 20°S: -71° high at 9 pm JUL at 20°S: -52° high at 9 pm AUG at 20°S: -28° high at 9 pm SEP at 20°S: -5° high at 9 pm OCT at 20°S: 15° high at 9 pm NOV at 20°S: 29° high at 9 pm DEC at 20°S: 31° high at 9 pm 30°S
JAN at 30°S: 12° high at 9 pm FEB at 30°S: -5° high at 9 pm MAR at 30°S: -24° high at 9 pm APR at 30°S: -47° high at 9 pm MAY at 30°S: -71° high at 9 pm JUN at 30°S: -79° high at 9 pm JUL at 30°S: -57° high at 9 pm AUG at 30°S: -33° high at 9 pm SEP at 30°S: -11° high at 9 pm OCT at 30°S: 7° high at 9 pm NOV at 30°S: 20° high at 9 pm DEC at 30°S: 22° high at 9 pm 40°S
JAN at 40°S: 4° high at 9 pm FEB at 40°S: -11° high at 9 pm MAR at 40°S: -29° high at 9 pm APR at 40°S: -51° high at 9 pm MAY at 40°S: -73° high at 9 pm JUN at 40°S: -83° high at 9 pm JUL at 40°S: -60° high at 9 pm AUG at 40°S: -38° high at 9 pm SEP at 40°S: -17° high at 9 pm OCT at 40°S: -1° 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 52°S, and never sets north of 52°N.
NGC 752 is 1,410 light-years away
The light seen from NGC 752 tonight left it about 1,410 years ago, around 616 AD. It ranks 10 of 109 by distance among the 109 Caldwell objects. Distance source: Gaia DR3, Hunt & Reffert 2023.
Objects within 6° of NGC 752
No other Messier, Caldwell or Herschel 400 object lies within 6°.
NGC 752 catalog data
Field Value
Designations Caldwell 28, NGC 752, Herschel 400 no. 31 Type open cluster Constellation Andromeda Right ascension (J2000) 01h 57.6m Declination (J2000) +37° 50′ Magnitude 5.7 Apparent size 50′ True size 21 light-years Distance 1,410 light-years (Gaia DR3, Hunt & Reffert 2023) Best month December Best with Naked eye Herschel 400 number 31
