Statements (253)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:star
|
| gptkbp:bfsLayer |
4
|
| gptkbp:bfsParent |
gptkb:Vela
gptkb:Beta_Columbae |
| gptkbp:age |
approximately 50 million years
approximately 50 million years old few million to several hundred million years |
| gptkbp:apparent_magnitude |
4.5
5.5 approximately 4.5 shows main sequence stars varies with observation shows main sequence turn-off point varies with observation conditions |
| gptkbp:availability |
data available in astronomical databases
|
| gptkbp:best_time_to_visit |
January to March
|
| gptkbp:collaborations |
involves multiple research institutions
involves many international astronomers |
| gptkbp:community_engagement |
popular among amateur astronomers.
|
| gptkbp:contains |
gptkb:NGC_2516
gptkb:HD_63433 gptkb:HD_63454 gptkb:HD_63477 gptkb:HD_63478 gptkb:HD_63479 gptkb:HD_63480 gptkb:HD_63481 gptkb:HD_63482 gptkb:HD_63483 gptkb:HD_63484 gptkb:HD_63485 gptkb:HD_63486 gptkb:HD_63487 gptkb:HD_63488 gptkb:HD_63489 gptkb:HD_63490 gptkb:HD_63491 gptkb:HD_63492 gptkb:HD_63493 gptkb:HD_63494 gptkb:HD_63495 gptkb:HD_63496 gptkb:HD_63497 gptkb:HD_63498 gptkb:HD_63499 gptkb:HD_63500 several hundred stars ongoing star formation influenced by gravitational interactions hundreds of stars HD 63434 HD 63435 HD 63436 HD 63437 HD 63438 HD 63439 HD 63440 HD 63441 HD 63442 HD 63443 HD 63444 HD 63445 HD 63446 HD 63447 HD 63448 HD 63449 HD 63450 HD 63451 HD 63452 HD 63453 HD 63455 HD 63456 HD 63457 HD 63458 HD 63459 HD 63460 HD 63461 HD 63462 HD 63463 HD 63464 HD 63465 HD 63466 HD 63467 HD 63468 HD 63469 HD 63470 HD 63471 HD 63472 HD 63473 HD 63474 HD 63475 HD 63476 includes various spectral types |
| gptkbp:coordinates |
l = 240°, b = -10°
RA 07h 30m 00s, Dec -50° 30' 00" |
| gptkbp:criteria |
based on distance and motion
based on proper motion and photometry |
| gptkbp:declination |
-49° 00' 00"
|
| gptkbp:depicted_in |
visible to the naked eye
best viewed in southern hemisphere |
| gptkbp:discovered_by |
gptkb:John_Frederick_William_Herschel
gptkb:John_Louis_Emil_Dreyer gptkb:John_Herschel |
| gptkbp:distance |
various methods used
approximately 1,000 light years trigonometric parallax approximately 1,200 light years |
| gptkbp:environmental_impact |
affects visibility in urban areas
|
| gptkbp:exhibition |
gptkb:New_General_Catalogue
IC catalog Dreyer's NGC/ IC catalog |
| gptkbp:features |
variable stars
young stars binary stars |
| gptkbp:formation_date |
provides insights into star formation processes
|
| gptkbp:frequency |
frequently observed by amateur astronomers
|
| gptkbp:future_plans |
ongoing studies planned
|
| gptkbp:has_color |
0.5
varies among members B-V = 0.5 to 1.0 |
| gptkbp:has_luminosity |
young stellar population
provides insights into stellar life cycles |
| gptkbp:has_spectral_type |
various types
|
| gptkbp:historical_significance |
part of early astronomical catalogs
one of the first clusters studied |
| https://www.w3.org/2000/01/rdf-schema#label |
IC 2391
|
| gptkbp:is_known_for |
NGC 2391
|
| gptkbp:is_observed_in |
gptkb:Hubble_Space_Telescope
|
| gptkbp:lighting |
moderately bright
can hinder visibility used to study variable stars apparent magnitude 3.8 available for variable stars in the cluster |
| gptkbp:located_in |
constellation Puppis
constellation Vela |
| gptkbp:mass |
main sequence stars
giant stars about 1,000 solar masses mainly young stars pre-main sequence stars mainly low-mass stars varies among member stars 0.1 to 10 solar masses varies from low to high mass stars |
| gptkbp:membership |
includes young stars
contains several hundred stars |
| gptkbp:metallicity |
solar metallicity
|
| gptkbp:mission |
none known
|
| gptkbp:notable_person |
gptkb:HD_63433
gptkb:HD_63454 gptkb:HD_63477 gptkb:HD_63478 gptkb:HD_63479 gptkb:HD_63480 gptkb:HD_63481 gptkb:HD_63482 gptkb:HD_63483 gptkb:HD_63484 gptkb:HD_63485 gptkb:HD_63486 gptkb:HD_63487 gptkb:HD_63488 gptkb:HD_63489 gptkb:HD_63490 gptkb:HD_63491 gptkb:HD_63492 gptkb:HD_63493 gptkb:HD_63494 gptkb:HD_63495 gptkb:HD_63496 gptkb:HD_63497 gptkb:HD_63498 gptkb:HD_63499 gptkb:HD_63500 none specifically noted HD 63434 HD 63435 HD 63436 HD 63437 HD 63438 HD 63439 HD 63440 HD 63441 HD 63442 HD 63443 HD 63444 HD 63445 HD 63446 HD 63447 HD 63448 HD 63449 HD 63450 HD 63451 HD 63452 HD 63453 HD 63455 HD 63456 HD 63457 HD 63458 HD 63459 HD 63460 HD 63461 HD 63462 HD 63463 HD 63464 HD 63465 HD 63466 HD 63467 HD 63468 HD 63469 HD 63470 HD 63471 HD 63472 HD 63473 HD 63474 HD 63475 HD 63476 contains several notable variable stars |
| gptkbp:operating_hours |
during winter months
|
| gptkbp:orbital_inclination |
studied to understand cluster dynamics
|
| gptkbp:photography |
conducted to map the cluster's stars
|
| gptkbp:population |
moderate density
high density of stars |
| gptkbp:publishes |
numerous studies published about it
numerous studies published about the cluster |
| gptkbp:related_concept |
similar to other open clusters in Puppis
|
| gptkbp:research |
gptkb:sneaker
small telescopes binoculars or small telescopes observed by various astronomers collected by various telescopes crowded field affected by light pollution in urban areas used to study stellar composition collected from various telescopes crowded field in the sky best viewed with binoculars or small telescope includes photometry and spectroscopy used to study stellar compositions |
| gptkbp:research_interest |
studied for star formation
of interest to astronomers studying stellar evolution |
| gptkbp:right_ascension |
08h 33m 00s
08h 36m 00s |
| gptkbp:significance |
helps understand cluster dynamics
|
| gptkbp:size |
approximately 20 arcminutes
approximately 20 light years across |
| gptkbp:starring |
hundreds of stars counted in surveys
|
| gptkbp:storage |
available from surveys
available for many stars |
| gptkbp:type |
gptkb:star
Galactic open cluster |
| gptkbp:year_created |
1834
1888 |