Q825894
Sign in to saveAlso known as New General Catalogue 663, C 10
open cluster in the constellation Cassiopeia
In the Vinony graph
Vinony's link graph records 994 inbound references to Q825894, and connects out to list of NGC objects (1–1000), Cassiopeia and epoch.
Vinony files it under Caldwell objects, Cassiopeia (constellation) and NGC objects.
Vinony links it to 38 Wikipedia language editions.
Key facts
- Right ascension
- 01 46.0
- Declination
- +61° 15 ′
- Distance
- 8,800 ly (2,700 pc )
- Apparent dimensions v
- 16.0 ′
- Other designations
- Caldwell 10, Cr 20, Lawnmower Cluster
- Constellation
- Cassiopeia
via Wikipedia infobox
Wikidata facts
- Distance from Earth
- 1952
- Image
- NGC663HunterWilson.jpg
Show 9 more facts
- catalog code
- Caldwell 10
- Commons category
- NGC 663
- time of discovery or invention
- 1787-11-03
- apparent magnitude
- 7.1
- right ascension
- 26.5375
- declination
- 61.2350
- radial velocity
- -32.3
- right ascension component of proper motion
- -1.94
- declination component of proper motion
- 0.06
Sources (2)
via Wikidata · CC0
~2 min read
Encyclopedic overview
NGC 663 image using PlaneWave CDK 12.5" telescope from Talent, OR NGC 663 (also known as Caldwell 10) is a young open cluster located 8,800 light years from Earth in the constellation of Cassiopeia. It has an estimated 400 stars and spans about a quarter of a degree across the sky. It can reportedly be detected with the unaided eye, although a telescope is recommended for best viewing. The brightest members of the cluster can be viewed with binoculars. Although the listed visual magnitude is 7.1, several observers have reported higher estimates.
Based on its parallax as measured by Gaia, it is located about 2,700 parsecs distant with an estimated age of 20–25 million years. This means that stars of spectral class B2 or higher (in the sense of higher mass), are reaching the end of their main sequence lifespan. This cluster appears to be located in front of a molecular cloud, although the two are not physically associated. This cloud has the effect of blocking background stars from the visual image of the cluster as it lies at a distance of 300 parsecs.
Excerpted from Wikipedia’s “Q825894” article, available under the CC BY-SA 4.0 licence.