Messier 45

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Messier 45 has 91 facts recorded in Dontopedia across 1 reference, with 8 live disagreements.

91 facts·77 predicates·1 sources·8 in dispute

Mostly:rdf:type(3), catalog designation(3), distance unit(3)

Inbound mentions (5)

Other subjects in dontopedia point AT this entity as a value. These are inverse relationships — e.g. "X motherOf this subject" — and answer questions the forward facts can't. Grouped by predicate.

`isPartOf`Is Part of(2)

Hd 23514ex:hd-23514
Pleioneex:pleione

`alternativeNameFor`Alternative Name for(1)

Pleiadesex:pleiades

`contains`Contains(1)

Taurus Constellationex:taurus-constellation

`memberOf`Member of(1)

Brightest Named Membersex:brightest-named-members

Other facts (90)

The long tail: predicates that appear too rarely to warrant their own section. Filter or scroll to find a specific one. Each row links to its source.

90 facts

Predicate	Value	Ref
Rdf:type	Open Star Cluster	[1]
Rdf:type	Star Cluster	[1]
Rdf:type	Open Cluster	[1]
Catalog Designation	M45	[1]
Catalog Designation	Cr 42	[1]
Catalog Designation	Mel 22	[1]
Distance Unit	light-years	[1]
Distance Unit	parsecs	[1]
Distance Unit	ly	[1]
Has Name in Japanese	昴	[1]
Has Name in Japanese	Subaru	[1]
Has Name in Japanese	Mutsuraboshi	[1]
Has Name in Persian	Soraya	[1]
Has Name in Persian	Parvin	[1]
Has Name in Persian	Parveen	[1]
Distance From Earth	444	[1]
Distance From Earth	136.2	[1]
Also Known As	The Pleiades Star Cluster	[1]
Also Known As	Seven Sisters	[1]
Has Name in Chinese	Mǎo	[1]
Has Name in Chinese	昴	[1]
Same As	Pleiades	[1]
Age Lower Bound	115	[1]
Age Upper Bound	150	[1]
Age Unit	million years	[1]
Best Estimate Age	124.53	[1]
Age Uncertainty Positive	3.34	[1]
Age Uncertainty Negative	2.7	[1]
Value Is Approximate	true	[1]
Confirmed Member Count	1000	[1]
Count Is Lower Bound	true	[1]
Apparent Magnitude	1.6	[1]
Visual Visibility Status	easily visible to naked eye	[1]
Apparent Size	110	[1]
Size Unit	arc minutes	[1]
Size Comparison	~4× the diameter of the full Moon	[1]
Core Radius	8	[1]
Radius Unit	light-years	[1]
Tidal Radius	43	[1]
Total Mass	800	[1]
Mass Unit	solar masses	[1]
Located in Constellation	Taurus Constellation	[1]
Binary Star Frequency	57	[1]
Brown Dwarf Member Percentage	25	[1]
Brown Dwarf Mass Contribution Percentage	2	[1]
Mass Contribution Qualifier	less than	[1]
Has Named Bright Stars Group	Brightest Named Members	[1]
Information Compiled From	Galileo 1610 through present	[1]
Best Viewing Season	Northern hemisphere winter	[1]
Transits Highest During	November–January	[1]
Located Approximately Degrees From	14	[1]
Located Northwest of	Aldebaran	[1]
Found by Extending	Orions Belt	[1]
Located in Direction From	northwest	[1]
Maximum Visible Star Count	14	[1]
Maximum Visibility Condition	under very dark skies	[1]
Minimum Typical Visible Stars	6	[1]
Maximum Typical Visible Stars	7	[1]
Typical Viewer Observation	most people see 6–7	[1]
Best Instrument for Casual Viewing	Binoculars	[1]
Reveals Beautifully in	Binoculars	[1]
Ideal Telescope Type	Wide-field instruments	[1]
Magnification Effect	reduces the experience	[1]
Name Meaning	to cluster/gather together	[1]
Has Name in Arabic	al-Thurayya	[1]
Has Name in Arabic Script	الثريا	[1]
Has Name in Babylonian	MUL.MUL	[1]
Babylonian Name Meaning	star of stars	[1]
Has Name in Sanskrit	Kṛttikā	[1]
Chinese Name Meaning	Hairy Head	[1]
Has Name in Hebrew	Kîmāh	[1]
Has Name in Hebrew Script	כִּימָה	[1]
Has Name in Greek	Pleiádes	[1]
Has Name in Greek Script	Πλειάδες	[1]
Has Name in Māori	Matariki	[1]
Has Name in Hawaiian	Makali'i	[1]
Is Important for	stellar astrophysics	[1]
Serves As Benchmark for	stellar evolution models	[1]
Has Approximate Age	120 Myr	[1]
Test Bed for	rotation and magnetic activity	[1]
Relevant to Star Type	young solar-type stars	[1]
Contains Evidence of	planet formation	[1]
Contains Numerous	X Ray Sources	[1]
Has Brown Dwarf Census	true	[1]
Census Helps Constrain	initial mass function	[1]
Has Distance	444	[1]
Distance Property	proximity	[1]
Allows Measurement of	individual stellar parameters	[1]
Measurement Precision	high precision	[1]
Ranked in Galaxy	most studied open clusters	[1]

Timeline axis is valid_time — when each source says the fact was true in the world, not when Dontopedia learned about it. Retracted rows are kept for provenance; coloured stripes indicate the context kind.

91 undated

—

typeastronomy/pleiades-m45-messier-objects

ex:OpenStarCluster

—

labelastronomy/pleiades-m45-messier-objects

Messier 45

—

sameAsastronomy/pleiades-m45-messier-objects

ex:pleiades

—

catalogDesignationastronomy/pleiades-m45-messier-objects

M45

—

catalogDesignationastronomy/pleiades-m45-messier-objects

Cr 42

—

catalogDesignationastronomy/pleiades-m45-messier-objects

Mel 22

—

distanceFromEarthastronomy/pleiades-m45-messier-objects

444

—

distanceUnitastronomy/pleiades-m45-messier-objects

light-years

—

distanceFromEarthastronomy/pleiades-m45-messier-objects

136.2

—

distanceUnitastronomy/pleiades-m45-messier-objects

parsecs

—

ageLowerBoundastronomy/pleiades-m45-messier-objects

115

—

ageUpperBoundastronomy/pleiades-m45-messier-objects

150

—

ageUnitastronomy/pleiades-m45-messier-objects

million years

—

bestEstimateAgeastronomy/pleiades-m45-messier-objects

124.53

—

ageUncertaintyPositiveastronomy/pleiades-m45-messier-objects

3.34

—

ageUncertaintyNegativeastronomy/pleiades-m45-messier-objects

2.7

—

valueIsApproximateastronomy/pleiades-m45-messier-objects

true

—

confirmedMemberCountastronomy/pleiades-m45-messier-objects

1000

—

countIsLowerBoundastronomy/pleiades-m45-messier-objects

true

—

apparentMagnitudeastronomy/pleiades-m45-messier-objects

1.6

—

visualVisibilityStatusastronomy/pleiades-m45-messier-objects

easily visible to naked eye

—

apparentSizeastronomy/pleiades-m45-messier-objects

110

—

sizeUnitastronomy/pleiades-m45-messier-objects

arc minutes

—

sizeComparisonastronomy/pleiades-m45-messier-objects

~4× the diameter of the full Moon

—

coreRadiusastronomy/pleiades-m45-messier-objects

—

radiusUnitastronomy/pleiades-m45-messier-objects

light-years

—

tidalRadiusastronomy/pleiades-m45-messier-objects

—

totalMassastronomy/pleiades-m45-messier-objects

800

—

massUnitastronomy/pleiades-m45-messier-objects

solar masses

—

locatedInConstellationastronomy/pleiades-m45-messier-objects

ex:taurus-constellation

—

binaryStarFrequencyastronomy/pleiades-m45-messier-objects

—

brownDwarfMemberPercentageastronomy/pleiades-m45-messier-objects

—

brownDwarfMassContributionPercentageastronomy/pleiades-m45-messier-objects

—

massContributionQualifierastronomy/pleiades-m45-messier-objects

less than

—

hasNamedBrightStarsGroupastronomy/pleiades-m45-messier-objects

ex:brightest-named-members

—

typeastronomy/pleiades-m45-messier-objects

ex:StarCluster

—

alsoKnownAsastronomy/pleiades-m45-messier-objects

The Pleiades Star Cluster

—

alsoKnownAsastronomy/pleiades-m45-messier-objects

Seven Sisters

—

informationCompiledFromastronomy/pleiades-m45-messier-objects

Galileo 1610 through present

—

bestViewingSeasonastronomy/pleiades-m45-messier-objects

Northern hemisphere winter

—

transitsHighestDuringastronomy/pleiades-m45-messier-objects

November–January

—

locatedApproximatelyDegreesFromastronomy/pleiades-m45-messier-objects

—

locatedNorthwestOfastronomy/pleiades-m45-messier-objects

ex:aldebaran

—

foundByExtendingastronomy/pleiades-m45-messier-objects

ex:orions-belt

—

locatedInDirectionFromastronomy/pleiades-m45-messier-objects

northwest

—

maximumVisibleStarCountastronomy/pleiades-m45-messier-objects

—

maximumVisibilityConditionastronomy/pleiades-m45-messier-objects

under very dark skies

—

minimumTypicalVisibleStarsastronomy/pleiades-m45-messier-objects

—

maximumTypicalVisibleStarsastronomy/pleiades-m45-messier-objects

—

typicalViewerObservationastronomy/pleiades-m45-messier-objects

most people see 6–7

—

bestInstrumentForCasualViewingastronomy/pleiades-m45-messier-objects

Binoculars

—

revealsBeautifullyInastronomy/pleiades-m45-messier-objects

Binoculars

—

idealTelescopeTypeastronomy/pleiades-m45-messier-objects

Wide-field instruments

—

magnificationEffectastronomy/pleiades-m45-messier-objects

reduces the experience

—

hasNameInJapaneseastronomy/pleiades-m45-messier-objects

昴

—

hasNameInJapaneseastronomy/pleiades-m45-messier-objects

Subaru

—

nameMeaningastronomy/pleiades-m45-messier-objects

to cluster/gather together

—

hasNameInJapaneseastronomy/pleiades-m45-messier-objects

Mutsuraboshi

—

hasNameInArabicastronomy/pleiades-m45-messier-objects

al-Thurayya

—

hasNameInArabicScriptastronomy/pleiades-m45-messier-objects

الثريا

—

hasNameInPersianastronomy/pleiades-m45-messier-objects

Soraya

—

hasNameInPersianastronomy/pleiades-m45-messier-objects

Parvin

—

hasNameInPersianastronomy/pleiades-m45-messier-objects

Parveen

—

hasNameInBabylonianastronomy/pleiades-m45-messier-objects

MUL.MUL

—

babylonianNameMeaningastronomy/pleiades-m45-messier-objects

star of stars

—

hasNameInSanskritastronomy/pleiades-m45-messier-objects

Kṛttikā

—

hasNameInChineseastronomy/pleiades-m45-messier-objects

Mǎo

—

hasNameInChineseastronomy/pleiades-m45-messier-objects

昴

—

chineseNameMeaningastronomy/pleiades-m45-messier-objects

Hairy Head

—

hasNameInHebrewastronomy/pleiades-m45-messier-objects

Kîmāh

—

hasNameInHebrewScriptastronomy/pleiades-m45-messier-objects

כִּימָה

—

hasNameInGreekastronomy/pleiades-m45-messier-objects

Pleiádes

—

hasNameInGreekScriptastronomy/pleiades-m45-messier-objects

Πλειάδες

—

hasNameInMāoriastronomy/pleiades-m45-messier-objects

Matariki

—

hasNameInHawaiianastronomy/pleiades-m45-messier-objects

Makali'i

—

isImportantForastronomy/pleiades-m45-messier-objects

stellar astrophysics

—

servesAsBenchmarkForastronomy/pleiades-m45-messier-objects

stellar evolution models

—

hasApproximateAgeastronomy/pleiades-m45-messier-objects

120 Myr

—

testBedForastronomy/pleiades-m45-messier-objects

rotation and magnetic activity

—

relevantToStarTypeastronomy/pleiades-m45-messier-objects

young solar-type stars

—

containsEvidenceOfastronomy/pleiades-m45-messier-objects

planet formation

—

containsNumerousastronomy/pleiades-m45-messier-objects

ex:x-ray-sources

—

hasBrownDwarfCensusastronomy/pleiades-m45-messier-objects

true

—

censusHelpsConstrainastronomy/pleiades-m45-messier-objects

initial mass function

—

hasDistanceastronomy/pleiades-m45-messier-objects

444

—

distanceUnitastronomy/pleiades-m45-messier-objects

—

distancePropertyastronomy/pleiades-m45-messier-objects

proximity

—

allowsMeasurementOfastronomy/pleiades-m45-messier-objects

individual stellar parameters

—

measurementPrecisionastronomy/pleiades-m45-messier-objects

high precision

—

typeastronomy/pleiades-m45-messier-objects

ex:OpenCluster

—

rankedInGalaxyastronomy/pleiades-m45-messier-objects

most studied open clusters

References (1)

1 references

[1]Pleiades M45 Messier Objects91 facts
ctx:seven-sisters/astronomy/pleiades-m45-messier-objects
- full textc03
  text/plain2 KBdoc:agent/c03/3aa13f9d-5d50-4493-a7f9-2c76be4f7a60
  Show excerpt
  [Source: Messier 45: The Pleiades Star Cluster — Full Astronomical Data — tradition: astronomy; era: modern (compiled from Galileo 1610 through present). Excerpt 3/4. Provenance: https://www.messier-objects.com/messier-45-pleiades/] [This e…
- full textc02
  text/plain2 KBdoc:agent/c02/bf866490-9157-4c47-b023-69d4d74460e0
  Show excerpt
  [Source: Messier 45: The Pleiades Star Cluster — Full Astronomical Data — tradition: astronomy; era: modern (compiled from Galileo 1610 through present). Excerpt 2/4. Provenance: https://www.messier-objects.com/messier-45-pleiades/] [This e…
- full textc04
  text/plain2 KBdoc:agent/c04/7aa0ce0b-c531-4f05-92ec-8f3d2521a845
  Show excerpt
  [Source: Messier 45: The Pleiades Star Cluster — Full Astronomical Data — tradition: astronomy; era: modern (compiled from Galileo 1610 through present). Excerpt 4/4. Provenance: https://www.messier-objects.com/messier-45-pleiades/] [This e…
- full textc01
  text/plain1 KBdoc:agent/c01/387e16d4-611a-43ac-b2f1-3fc8780a2101
  Show excerpt
  [Source: Messier 45: The Pleiades Star Cluster — Full Astronomical Data — tradition: astronomy; era: modern (compiled from Galileo 1610 through present). Excerpt 1/4. Provenance: https://www.messier-objects.com/messier-45-pleiades/] [This e…

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Messier 45

Inbound mentions (5)

isPartOfIs Part of(2)

alternativeNameForAlternative Name for(1)

containsContains(1)

memberOfMember of(1)

Other facts (90)

Timeline

References (1)

See also

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`alternativeNameFor`Alternative Name for(1)

`contains`Contains(1)

`memberOf`Member of(1)