NGC 7789

NGC 7789 (also known as Caroline's Rose,^[4] Caroline's Haystack,^[5] or the White Rose Cluster) is an open cluster in Cassiopeia that was discovered by Caroline Herschel in 1783. Her brother William Herschel included it in his catalog as H VI.30. This cluster is also known as the "White Rose" Cluster or "Caroline's Rose" Cluster because when seen visually, the loops of stars and dark lanes look like the swirling pattern of rose petals as seen from above.

Map showing location of NGC 7789

NGC 7789
NGC 7789 taken with an amateur telescope
Observation data (J2000.0 epoch)
Right ascension	23h 57m 24s[1]
Declination	+56° 42′ 30″[1]
Distance	7.6 kly (2,337[2])
Apparent magnitude (V)	6.7
Apparent dimensions (V)	16′[2]
Physical characteristics
Mass	6,620.4 ± 762.5[3] M☉
Estimated age	1.7 GYr[2]
Other designations	Caroline's Rose,[4] White Rose Cluster, Cr 460, Mel 245
Associations
Constellation	Cassiopeia
See also: Open cluster, List of open clusters