local standard of rest

E581533

The local standard of rest is a reference frame in the Milky Way that represents the average motion of stars in the Sun’s neighborhood, used to measure stellar and galactic velocities.

All labels observed (2)

Label Occurrences
Local Standard of Rest 1
local standard of rest canonical 1

How this entity was disambiguated

Statements (50)

Predicate Object
instanceOf astrophysical reference frame ⓘ
galactic dynamical concept ⓘ
kinematic standard of rest ⓘ
alsoKnownAs LSR ⓘ
appliesTo solar neighborhood stars ⓘ
associatedWith Galactic coordinate system ⓘ
Galactic rotation ⓘ
Oort constants ⓘ
solar neighborhood ⓘ
assumes nearby stars have small random motions around LSR ⓘ
belongsTo Milky Way disk ⓘ
linked to: Galactic disk
coordinateSystem Galactic coordinates ⓘ
definedAs average motion of stars in the Sun’s neighborhood ⓘ
definedBy mean motion of stars in a specified volume around the Sun ⓘ
definedInContextOf Milky Way galaxy ⓘ
linked to: Milky Way
frameVelocityOfSunApprox (U,V,W) ≈ (11, 12, 7) km/s relative to LSR ⓘ
hasAssumption Sun is near circular orbit around Galactic center ⓘ
hasHistoricalUse standardizing radial velocity measurements in spectroscopy ⓘ
hasLimitation depends on sample of stars used ⓘ
local approximation, not valid for whole Galaxy ⓘ
not unique; different definitions exist ⓘ
hasType local reference frame ⓘ
non-inertial frame ⓘ
hasVariant dynamical local standard of rest ⓘ
kinematic local standard of rest ⓘ
hasVelocityComponent U (toward Galactic center) ⓘ
V (in direction of Galactic rotation) ⓘ
W (toward north Galactic pole) ⓘ
relatedConcept Galactic standard of rest ⓘ
International Celestial Reference System ⓘ
barycentric reference frame ⓘ
heliocentric reference frame ⓘ
relativeTo Sun ⓘ
nearby stars ⓘ
timeScale assumed steady over tens of millions of years ⓘ
usedFor correcting observed stellar velocities for solar motion ⓘ
defining standard radial velocity zero point ⓘ
interpreting gas motions in the Milky Way ⓘ
mapping spiral structure of the Galaxy ⓘ
studying Galactic rotation curve ⓘ
transforming heliocentric velocities to Galactic frame ⓘ
usedIn astrometry ⓘ
galactic astronomy ⓘ
galactic dynamics ⓘ
radio astronomy ⓘ
stellar kinematics ⓘ
usedToMeasure galactic velocities ⓘ
proper motions ⓘ
radial velocities ⓘ
stellar velocities ⓘ

How these facts were elicited

Referenced by (2)

Full triples — surface form annotated when it differs from this entity's canonical label.

Solar neighborhood → referenceFrameFor → local standard of rest ⓘ
Leading Arm → velocityFrame → Local Standard of Rest ⓘ
linked to: local standard of rest