QSO B1921-293

Basic data :
QSO B1921-293 -- BL Lac Origin of the objects types : (Ref) Object type as listed in the reference "Ref" (acronym) Object type linked to the acronym according to the original reference () Anterior to 2007, before we can link the objet type to a reference, or given by the CDS team in some particular cases Other object types: Rad (2010AJ,ICRF,...), QSO (2008ApJS,QSO,...), Bla (2009A&A,[DGT2001],...), X (2009A&A,2E,...), gam (1FGL,2FGL,...), IR (2MASS,WISEA,...), BLL (2012MNRAS,[VV98b]), AGN (2011ApJ,CGRaBS), G (6dFGS,LEDA), * (EPIC,Gaia), smm (JCMTSE), cm (AT20G) Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" : ra dec : right 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) [error 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 North celestial pole to East) quality : flag of quality E ≥ 10" D : 1-10" (and some old data) C : 0.1-1" B : 0.01-0.1" + 2MASS, Tyc A : VLBI, Hipparcos bibcode : bibcode of the coordinates reference ICRS coord. (ep=J2000) : 19 24 51.0555700728 -29 14 30.118109640 (Optical) [ 0.1000 0.0973 90 ] A 2020yCat.1350....0G Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" : ra dec : right 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) [error 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 North celestial pole to East) quality : flag of quality E ≥ 10" D : 1-10" (and some old 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) : 19 21 42.2342219937 -29 20 26.371098785 [ 0.1000 0.0973 90 ] Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" : ra dec : right 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) [error 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 North celestial pole to East) quality : flag of quality E ≥ 10" D : 1-10" (and some old data) C : 0.1-1" B : 0.01-0.1" + 2MASS, Tyc A : VLBI, Hipparcos bibcode : bibcode of the coordinates reference Gal coord. (ep=J2000) : 009.3440791761175 -19.6067891217128 [ 0.1000 0.0973 90 ] Syntax of proper motions is : "pm-ra pm-dec [error ellipse] quality bibcode" pm-ra : mu-ra*cos(dec) (expressed in the ICRS system in mas/yr) pm-dec : mu-dec (expressed in the ICRS system in mas/yr) [error ellipse] : error major axis and minor axis (in mas), orientation angle (in deg) quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality) bibcode : bibcode of the proper motion reference Proper motions mas/yr : 0.341 -0.121 [0.121 0.113 90] A 2020yCat.1350....0G Syntax of radial velocity (or/and redshift) is : "value [error] (wavelength) quality bibcode" value : radial velocity or/and redshift (Heliocentric frame) according to your Output Options (redshift may be not displayed if the data value is <0 and the database inside value is a radial velocity) [error] : error of the corresponding value displayed before (wavelength) : wavelength range of the measurement : Rad, mm, IR, Opt, UV, Xray, Gam or  '∼'(unknown) quality : flag of quality ( A=best quality -> E=worst quality, {� } =unknown quality) bibcode : bibcode of the value's origin Radial velocity / Redshift / cz : V(km/s) 87895 [55] / z(~) 0.35263 [0.00018] / cz 105715.0 [55.0]    (Opt) C 2009MNRAS.399..683J Syntax of angular size is : "maj-axis min-axis angle (wtype) quality bibcode" maj-axis : major axis size (arc minutes) min-axis : minor axis size (arc minutes) angle : 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 angular size reference Angular size (arcmin): 0.0000123 0.0000048 -5 (Rad) D 2010AJ....139.1713C Syntax of fluxes (or magnitudes) is : "filter-name (System) flux-value [error] quality MultVarFlags bibcode" filter-name : U, B, V, R, I, G, J, H, K, u, g, r, i, z (System) : may be AB (default is Vega) flux-value : value of flux or magnitude [error] : error value quality : flag of quality of the flux value ( A=best quality -> E=worst quality, {� } =unknown quality) MultVarFlags : Mult is zero or one char (J) for joined photometry ; Var can be zero or two chars (V[0-4]) bibcode : bibcode of the flux reference Fluxes (7) : B 18.71 [~] D 2008MNRAS.384..775M V 18.21 [~] D 2010A&A...518A..10V R 15.07 [~] D 2008ApJS..175...97H G 17.712763 [0.020731] C 2020yCat.1350....0G J 14.958 [0.041] C 2003yCat.2246....0C H 14.029 [0.045] C 2003yCat.2246....0C K 13.141 [0.043] C 2003yCat.2246....0C	SIMBAD within arcmin ', {sourceSize:12, color:'#30a090'})); aladin.on('objectClicked', function(object) { var objName=object.data.MAIN_ID; aladin.showPopup(object.ra,object.dec,'',''+ objName+''); });" title="Show Simbad objects"> Overlay points in this preview 2MASS DSS SDSSXMMIRACIRISGALEX All (CDSPortal) Send to within arcsec The VizieR photometry tool allows for easy visualization of photometry points extracted around the Simbad position from photometry-enabled catalogues in VizieR. The search radius has to be specified by the user. It is currently limited to a maximum of 30 arcsec. It depends mostly on the precision or quality of the coordinates (SIMBAD and VizieR catalogs), the resolution of the images from which the sources were extracted, source extent, and source crowding. Suggestions are: crowded field: 0.5 to 1.5 arcsec, 3 arcsec otherwise; uncertain coordinates (SIMBAD quality E or coordinates without reference): 5 to 30 arsec (risky!).

QSO B1921-293	IERS B1921-293	1RXS J192450.8-291437	[MGL2009] BZQ J1924-2914
AT20G J192451-291430	IVS B1921-293	SWIFT J1924.9-2918	[MML2015] 5BZQ J1924-2914
AT20G J192451.0-291430	JCMTSE J192451.2-291431	TIC 168765078	[NZ2007] 12
CGRaBS J1924-2914	LEDA 2830012	VCS1 J1924-2914	[VV2000] J192451.1-291431
6dFGS gJ192451.0-291430	2MASS J19245105-2914300	VSOP J1924-2914	[VV2003] J192451.1-291431
2E 4245	MRC 1921-293	WISEA J192451.05-291430.1	[VV2006] J192451.1-291431
2E 1921.7-2920	NVSS J192451-291431	WISE J192451.05-291430.0	[VV2010] J192451.1-291431
EPIC 229228355	OHIO V 236	WISE J192451.05-291430.1	[VV98b] J192451.1-291431
EPIC 213490088	OHIO V -236	WMAP J1924-2914	[WCO2009] J192452-291415
1ES 1921-29.3	PBC J1924.4-2913	[CH94] 1921-293	EQ 1921-29
1FGL J1925.2-2919	PKS 1921-293	[DGT2001] B1921-293	Gaia EDR3 6758696945147732352
2FGL J1924.8-2912	PKS J1924-2914	[DSJ85] 1921-293	Gaia DR1 6758696945147732352
3FGL J1924.8-2914	PMN J1924-2914	[GR92] 1921-293	Gaia DR2 6758696945147732352
4FGL J1924.8-2914	QSO J1924-2914	[HB93] 1921-293
3FHL J1924.8-2913	RORF 1921-293	[IN88] 1921-293
ICRF J192451.0-291430	RX J1924.8-2914	[MEM2008] 255

References (767 between 1850 and 2022) (Total 767) Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system). Follow new references on this object

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External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : QSO B1921-293

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