Statements (122)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:galaxy
gptkb:nebula |
| gptkbp:bfsLayer |
4
|
| gptkbp:bfsParent |
gptkb:Cetus
|
| gptkbp:apparent_magnitude |
10.9
12.0 |
| gptkbp:area |
0.5 light years
|
| gptkbp:associated_with |
stellar evolution
star formation mass loss late-stage stars |
| gptkbp:base |
best viewed with a telescope
|
| gptkbp:body_style |
gptkb:battle
|
| gptkbp:composed_of |
gptkb:hydrogen
nitrogen oxygen carbon helium |
| gptkbp:contains |
gptkb:NGC_247
gptkb:battle young stars BD+00° 1003 |
| gptkbp:cultural_significance |
popular among amateur astronomers
featured in astronomy literature observed in astrophotography |
| gptkbp:declination |
-11° 49' 0"
-11° 53′ 0″ |
| gptkbp:depicted_in |
gptkb:battle
requires telescope best viewed in winter |
| gptkbp:diameter |
approximately 100,000 light-years
|
| gptkbp:discovered_by |
gptkb:William_Herschel
|
| gptkbp:distance |
approximately 160 million light-years
1600 light years |
| gptkbp:emergency_services |
gptkb:battle
|
| gptkbp:emissions_standard |
H-alpha
[ OIII] [ SII] [ NII] |
| gptkbp:examines |
galaxy evolution research
|
| gptkbp:exhibition |
gptkb:New_General_Catalogue
gptkb:Messier_catalog |
| gptkbp:features |
star-forming regions
central star bipolar structure ionized gas |
| gptkbp:foot |
gptkb:battle
|
| gptkbp:has_ahistory_of |
gptkb:battle
|
| gptkbp:has_luminosity |
gptkb:SN_2004dj
|
| gptkbp:has_spectral_type |
gptkb:mythological_figure
various |
| gptkbp:historical_significance |
Herschel's discoveries
early nebula studies |
| https://www.w3.org/2000/01/rdf-schema#label |
NGC 246
|
| gptkbp:image |
Hubble Space Telescope image available
Hubble image available |
| gptkbp:includes |
astronomical catalogs
|
| gptkbp:is_analyzed_in |
chemical composition
|
| gptkbp:is_associated_with |
star clusters
|
| gptkbp:is_explored_in |
space telescopes
|
| gptkbp:is_known_for |
its luminosity
|
| gptkbp:is_noted_for |
its morphology
|
| gptkbp:is_observed_in |
gptkb:Hubble_Space_Telescope
professional astronomers radio telescopes |
| gptkbp:is_part_of |
gptkb:Local_Group
gptkb:Cetus_constellation deep-sky objects Hubble Space Telescope survey galactic survey projects |
| gptkbp:is_studied_in |
gptkb:observatory
stellar dynamics |
| gptkbp:is_used_in |
galaxy formation studies
|
| gptkbp:lighting |
high
high surface brightness |
| gptkbp:located_in |
constellation Cetus
galactic coordinates |
| gptkbp:mass |
mixed age
|
| gptkbp:merchandise |
gptkb:NGC_245
gptkb:NGC_248 gptkb:NGC_249 gptkb:NGC_247 |
| gptkbp:notable_feature |
ring structure
ionized gas expanding shell bipolar outflow central star visibility |
| gptkbp:notable_features |
asymmetry
ring structure complex morphology |
| gptkbp:notable_for |
its bright core
|
| gptkbp:number |
C 00 01.0+11 50.0
|
| gptkbp:photography |
amateur astronomers
planetary nebula type |
| gptkbp:previous_name |
gptkb:Cetus_II
Caldwell 55 |
| gptkbp:redshift |
0.0123
|
| gptkbp:research |
faintness
amateur telescopes background light interference professional observatories spectroscopes light pollution interference telescope requirement |
| gptkbp:research_focus |
stellar lifecycle
cosmic chemical enrichment study of stellar death understanding nebulae |
| gptkbp:right_ascension |
00h 47m 0s
|
| gptkbp:set_in |
southern celestial hemisphere
|
| gptkbp:size |
1.5 arcminutes
|
| gptkbp:storage |
B-band magnitude 11.5
I-band magnitude 9.8 R-band magnitude 10.2 V-band magnitude 10.9 |
| gptkbp:type |
gptkb:nebula
barred spiral galaxy |
| gptkbp:universe |
gptkb:NGC_247
gptkb:battle |
| gptkbp:year_created |
gptkb:1785
1786 |
| gptkbp:youth_club |
gptkb:battle
|