Key facts
- Right ascension
- 23 57 24
- Declination
- +56 ° 42 ′ 30 ″
- Distance
- 7.6 kly (2,337 )
- Apparent dimensions v
- 16 ′
- Mass
- 6 620 .4 ± 762.5 M ☉
- Estimated age
- 1.4-1.7 GYr
- Other designations
- Caroline's Rose, White Rose Cluster, Cr 460, Mel 245
- Constellation
- Cassiopeia
via Wikipedia infobox
Wikidata facts
- Instance of
- open cluster
- Part of
- Milky Way
- Constellation
- Cassiopeia
- Distance from Earth
- 2337
- Image
- Ngc 7789 carolines rose 2024 10 04 95x180s iso640 bortle4.jpg
Show 12 more facts
- discoverer or inventor
- Caroline Herschel
- catalog code
- C 2354+564
- Commons category
- NGC 7789
- time of discovery or invention
- 1783-00-00
- apparent magnitude
- 6.7
- right ascension
- 359.3500
- declination
- 56.7083
- radial velocity
- -64.0
- epoch
- J2000.0
- metallicity
- 0.00
- right ascension component of proper motion
- -2.20
- declination component of proper motion
- -1.11
Sources (1)
via Wikidata · CC0
~3 min read
Encyclopedic overview
NGC 7789 (also known as Caroline's Rose, Caroline's Haystack, or the White Rose Cluster) is an open cluster located around 7,600 light years from Earth in the constellation of Cassiopeia. It is intermediate-age cluster with estimates ranging from 1.4 to 1.7 billion years old. It has a mass of around 6,620.4±762.5 solar masses.
It 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.
Excerpted from Wikipedia’s “NGC 7789” article, available under the CC BY-SA 4.0 licence.