Statements (56)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:galaxy
gptkb:open_cluster |
| gptkbp:age |
approximately 1.5 billion years
|
| gptkbp:apparent_magnitude |
10.5
12.8 available for analysis |
| gptkbp:base_notes |
best viewed in small telescopes
|
| gptkbp:cluster_size |
approximately 10 arcminutes in diameter
|
| gptkbp:contains_star |
gptkb:NGC_3293
low to moderate several hundred stars gravitationally bound |
| gptkbp:coordinates |
RA 12h 41m 30s, Dec -60° 25' 00"
l = 305°, b = -5° RA 12h 40m 36.0s, Dec -35° 56' 36'' |
| gptkbp:declination |
-60° 25' 00"
|
| gptkbp:diameter |
approximately 50,000 light years
|
| gptkbp:discovered_by |
gptkb:John_Frederick_William_Herschel
gptkb:John_Herschel |
| gptkbp:discovery_year |
1834
|
| gptkbp:distance_from_earth |
approximately 1,500 light years
|
| gptkbp:exhibition |
gptkb:New_General_Catalogue
|
| gptkbp:has_color |
B-V = 0.5
|
| gptkbp:has_luminosity |
contains stars in various evolutionary stages
|
| gptkbp:has_spectral_type |
various types
|
| gptkbp:historical_significance |
notable for its size
|
| https://www.w3.org/2000/01/rdf-schema#label |
NGC 4609
|
| gptkbp:image |
Hubble image available
|
| gptkbp:is_observed_in |
gptkb:Hubble_Space_Telescope
|
| gptkbp:is_visible_from |
best in southern hemisphere
|
| gptkbp:lighting |
affected by light pollution
moderately bright variable stars present |
| gptkbp:located_in |
constellation Centaurus
|
| gptkbp:mass |
approximately 1,000 solar masses
mainly young stars |
| gptkbp:membership |
includes both main sequence and giant stars
|
| gptkbp:metallicity |
solar metallicity
|
| gptkbp:orbit_type |
none known
|
| gptkbp:population_density |
moderate density
|
| gptkbp:publications |
numerous studies published
|
| gptkbp:redshift |
0.0031
|
| gptkbp:research |
requires telescope for observation
best observed in winter months requires dark skies for best view |
| gptkbp:research_importance |
important for understanding cluster dynamics
|
| gptkbp:research_interest |
studied for star formation
|
| gptkbp:right_ascension |
12h 41m 30s
|
| gptkbp:stellar_age_distribution |
varied ages present
|
| gptkbp:stellar_density_profile |
follows King profile
|
| gptkbp:stellar_mass_function |
follows typical cluster distribution
|
| gptkbp:stellar_mass_range |
from 0.5 to 20 solar masses
|
| gptkbp:stellar_population_ratio |
more blue stars than red stars
|
| gptkbp:storage |
available in various surveys
|
| gptkbp:type |
gptkb:spiral_galaxy
Galactic open cluster |