What Is Meant By The Phrase "Angular Size"?

NAME OMC-ane -- Molecular Cloud
Origin of the objects types : (Ref) Object type every bit listed in the reference "Ref" (acronym) Object type linked to the acronym co-ordinate to the original reference () Anterior to 2007, before we tin can link the objet type to a reference, or given by the CDS squad in some item cases Other object types:	`DNe ([DB2002b])`, `MoC (OMC)`
Syntax of coordinates is : "ra december (wtype) [error ellipse] quality bibcode" : ra dec : right rising and declination (unit and frame defined according to your Output Options) Greyness values are increasing the original precision due to the computation of frame transformations (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam) [error ellipse] : measurement incertitude, on (ra,dec) if the positional bending is xc degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue), position angle (in degrees N angelic pole to East) quality : flag of quality E ≥ x" D : 1-10" (and some sometime information) C : 0.i-ane" B : 0.01-0.one" + 2MASS, Tyc A : VLBI, Hipparcos bibcode : bibcode of the coordinates reference ICRS coord. (ep=J2000) :	`05 35 xiv. 0 -05 22 2 4 [ ] Due east ~`
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" : ra dec : correct ascension and declination (unit and frame defined according to your Output Options) Grey values are increasing the original precision due to the computation of frame transformations (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam) [mistake ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue), position angle (in degrees N celestial pole to Due east) quality : flag of quality E ≥ 10" D : 1-10" (and some onetime data) C : 0.1-1" B : 0.01-0.1" + 2MASS, Tyc A : VLBI, Hipparcos bibcode : bibcode of the coordinates reference FK4 coord. (ep=B1950 eq=1950) :	`05 32 46. 5 -05 24 1 7 [ ]`
Syntax of coordinates is : "ra dec (wtype) [fault ellipse] quality bibcode" : ra dec : right ascension and declination (unit and frame defined according to your Output Options) Gray values are increasing the original precision due to the computation of frame transformations (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam) [error ellipse] : measurement dubiety, on (ra,dec) if the positional bending is 90 degrees, on (majaxis,minaxis) otherwise (in mas at divers epoch in the original catalogue), position bending (in degrees North angelic pole to East) quality : flag of quality East ≥ 10" D : 1-ten" (and some old information) C : 0.one-1" B : 0.01-0.ane" + 2MASS, Tyc A : VLBI, Hipparcos bibcode : bibcode of the coordinates reference Gal coord. (ep=J2000) :	`208.990 iv -xix.385 8 [ ]`
Syntax of angular size is : "maj-centrality min-axis bending (wtype) quality bibcode" maj-axis : major axis size (arc minutes) min-axis : minor axis size (arc minutes) bending : orientation angle (in degrees) (wtype) : wavelength class for the origin of the angular size (Rad, mm, IR, Opt, UV, Xray, Gam) quality : flag of quality of the angular size values ( A=best quality -> E=worst quality, {� } =unknown quality) bibcode : bibcode of the athwart size reference Angular size (arcmin):	`7 iv 90 (~) D` `2002A&A...383..631D`

', {sourceSize:12, color:'#30a090'})); aladin.on('objectClicked', function(object) { var objName=object.data.MAIN_ID; aladin.showPopup(object.ra,object.dec,'',''+ objName+''); });" championship="Show Simbad objects"> Overlay Simbad points in this preview