IERS B1721+589

Basic data :
7C 1721+5859 -- Quasar 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 (2019ApJS,7C,...), QSO (2005ApJ,[VV2003],...), Bla (2009A&A,[MGL2009],...), X (2007AJ,1RXS), IR (WISEA,WISE,...), AGN (2007AJ,CGRaBS), Bz? ([SRM2005]), * (Gaia) 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) : 17 22 36.7252388688 +58 56 22.248118356 (Optical) [ 0.4087 0.4071 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) : 17 21 52.4538726684 +58 59 06.481625709 [ 0.4087 0.4071 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) : 087.5848064059901 +34.3434377482990 [ 0.4087 0.4071 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 : 0.647 0.762 [0.547 0.562 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) 239622 [114] / z(spectroscopic) 1.99413 [0.00038] / cz 597825.1 [113.9]    (Opt) C 2012ApJS..203...21A 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 (9) : B 19.47 [~] D 2010A&A...518A..10V V 19.44 [~] D 2010A&A...518A..10V R 19.00 [~] D 2008ApJS..175...97H G 20.114450 [0.008576] C 2020yCat.1350....0G u (AB) 19.4573 [0.0293] C 2020ApJS..250....8L g (AB) 19.4526 [0.0201] C 2020ApJS..250....8L r (AB) 19.6039 [0.0280] C 2020ApJS..250....8L i (AB) 19.2803 [0.0273] C 2020ApJS..250....8L z (AB) 19.0564 [0.0481] C 2020ApJS..250....8L	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!).
Some important notes on this object about identifications and objects associations. notes: See also Specfind radio flux densities.

7C 1721+5859	87GB 172151.5+585923	SDSS J172236.72+585622.2	[MGL2009] BZQ J1722+5856
BWE 1721+5859	ICRF J172236.7+585622	TXS 1721+589	[MML2015] 5BZQ J1722+5856
6C 172151+585905	IERS B1721+589	VCS1 J1722+5856	[PCE2006] 535
7C 172152.60+585907.00	IVS B1721+589	VIPS J17226+5856	[SRM2005] J172236.72+585622.2
CGRaBS J1722+5856	JVAS J1722+589	VIPS 1073	[VV2003] J172236.7+585622
CLASS J172236.7291+585622.265	JVAS J1722+5856	WB 1721+5859	[VV2006] J172236.7+585622
FIRST J172236.7+585622	JVAS B1721+589	WISEA J172236.47+585622.2	[VV2010] J172236.7+585622
FLSGMRT J172236.8+585622	MY 172152.6+585633.7	WISE J172236.47+585622.2	Gaia EDR3 1434033681136165376
FLSVLA J172236.7+585622	NVSS J172236+585622	WN B1721+5859	Gaia DR1 1434033676840645632
GB6 B1721+5859	1RXS J172232.7+585615	WN B1721.8+5859	Gaia DR2 1434033681136165376

References (60 between 1850 and 2022) (Total 60) 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

Collections of Measurements

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : IERS B1721+589

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