NGC 6087
Sign in to saveAlso known as S Normae Cluster, Caldwell 89
open cluster in the constellation Norma
Key facts
- Right ascension
- 16 18 48
- Declination
- −57 ° 56 ′
- Distance
- ~3500LY (~1000pc)
- Apparent dimensions v
- 12 ′
- Other designations
- S Normae Cluster, Caldwell 89, Cr 300
- Constellation
- Norma
via Wikipedia infobox
Wikidata facts
- Instance of
- open cluster
- Constellation
- Norma
- Distance from Earth
- 901
- Image
- NGC 6087.jpg
Show 12 more facts
- catalog code
- C 1614-577
- Commons category
- NGC 6087
- discoverer or inventor
- James Dunlop
- time of discovery or invention
- 1826-05-08
- apparent magnitude
- 5.4
- right ascension
- 244.7083
- declination
- -57.9350
- radial velocity
- -9.05
- epoch
- J2000.0
- metallicity
- 0.21
- right ascension component of proper motion
- -1.25
- declination component of proper motion
- -2.12
Sources (1)
via Wikidata · CC0
~1 min read
Encyclopedic overview
Map showing the location of NGC 6087 NGC 6087 (also known as Caldwell 89 or the S Normae Cluster) is an open cluster of 40 or more stars centered on the Cepheid variable S Normae in the constellation Norma. At a distance of about 3500 ly and covering a field of almost one quarter of a degree, the stars range from seventh- to eleventh-magnitude, the brightest being 6.5 magnitude S Normae. The aggregate visual magnitude of the cluster is about 5.4.
Spectral analysis of the radial motion of the stars confirm that S Normae is a member of the cluster, and the period/luminosity relationship of Cepheid variables allows the distance to be determined with confidence.
Excerpted from Wikipedia’s “NGC 6087” article, available under the CC BY-SA 4.0 licence.