Properties (49)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
open cluster
|
| gptkbp:age |
approximately 200 million years
|
| gptkbp:contains |
approximately 50 stars
|
| gptkbp:coordinates |
RA 18h 03m 30s, Dec -17° 05′ 00″
|
| gptkbp:diameter |
approximately 10 light years
|
| gptkbp:established |
gptkb:Charles_Messier
|
| gptkbp:exhibits |
Messier catalog
|
| gptkbp:hasFacilities |
estimated total mass of 1,000 solar masses
|
| gptkbp:hasGoals |
NGC 6613
|
| gptkbp:hasRecognition |
6.5
|
| gptkbp:hasRelatedPatent |
various types including O and B
|
| gptkbp:hasSibling |
ongoing star formation
|
| gptkbp:hasVariants |
-17° 05′ 00″
|
| https://www.w3.org/2000/01/rdf-schema#label |
Messier 18
|
| gptkbp:isAccessibleBy |
gptkb:Northern_Hemisphere
small telescopes |
| gptkbp:isAssociatedWith |
star forming regions
|
| gptkbp:isFiledIn |
B-V = 0.5
|
| gptkbp:isLocatedIn |
gptkb:Messier's_original_catalog
SIMBAD database Galactic coordinates l=6.5°, b=-2.5° the_Galactic_Center |
| gptkbp:isLocatedNear |
gptkb:Messier_17
|
| gptkbp:isNotableFor |
its young stars
|
| gptkbp:isNotedFor |
its high concentration of stars
its loose structure |
| gptkbp:isOftenMadeWith |
Messier 25
|
| gptkbp:isPartOf |
gptkb:Galactic_Halo
stellar evolution studies 2MASS survey open_clusters_in_Sagittarius |
| gptkbp:isServedBy |
optical wavelengths
infrared_wavelengths |
| gptkbp:isStudiedIn |
astrophysics
stellar dynamics |
| gptkbp:isUsedIn |
stellar population studies
|
| gptkbp:isUtilizedIn |
NGC catalog
|
| gptkbp:isVisitedBy |
clear nights
|
| gptkbp:legalStatus |
18h 03m 30s
|
| gptkbp:length |
approximately 4,900 light years
|
| gptkbp:locatedIn |
gptkb:Sagittarius_constellation
|
| gptkbp:notableFor |
its bright stars
|
| gptkbp:partOf |
Milky Way galaxy
|
| gptkbp:photography |
gptkb:Hubble_Space_Telescope
|
| gptkbp:relatedTo |
gptkb:Messier_17
|
| gptkbp:releaseYear |
1764
|
| gptkbp:type |
open star cluster
|
| gptkbp:visibility |
best viewed in summer months
|
| gptkbp:visitedBy |
various amateur astronomers
|