IERS B1656+348

Basic data :
6C 165613+344803 -- 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: UV (), Rad (2014ApJS,6C,...), QSO (2011MNRAS,QSO,...), Bla (2009A&A,[MGL2009],...), * (Lan,Gaia), X (2009A&A,1WGA), IR (WISEA,WISE), AGN (CGRaBS), Q? (FBQS) 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) : 16 58 01.4190167832 +34 43 28.402392936 (Optical) [ 0.0690 0.0888 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) : 16 56 12.2734160476 +34 47 59.881447987 [ 0.0690 0.0888 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) : 057.3896004182478 +37.3823768040444 [ 0.0690 0.0888 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 : 0.151 -0.027 [0.088 0.118 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) 237610 [27] / z(spectroscopic) 1.93979 [0.00009] / cz 581534.4 [27.0]    (Opt) C 2015ApJS..219...12A 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 18.27 [~] D 2010A&A...518A..10V V 18.11 [~] D 2010A&A...518A..10V R 17.61 [~] D 2008ApJS..175...97H G 17.823860 [0.005229] C 2020yCat.1350....0G u (AB) 17.940 [0.011] C 2015ApJS..219...12A g (AB) 17.971 [0.006] B 2015ApJS..219...12A r (AB) 17.987 [0.006] B 2015ApJS..219...12A i (AB) 17.670 [0.007] B 2015ApJS..219...12A z (AB) 17.598 [0.014] C 2015ApJS..219...12A	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.

6C 165613+344803	IERS B1656+348	SDSS J165801.42+344328.4	[P82] 1656+347
B2 1656+34	IVS B1656+348	TXS 1656+347	[VV2000] J165801.5+344329
B2.3 1656+34	JVAS J1658+3443	VLSS J1658.0+3443	[VV2003] J165801.5+344329
BWE 1656+3448	JVAS B1656+348	WB 1656+3448	[VV2006] J165801.5+344329
7C 165612.30+344802.00	Lan 15	1WGA J1658.0+3443	[VV2010] J165801.5+344329
CGRaBS J1658+3443	MITG J165802+3443	WISEA J165801.41+344328.4	[VV96] J165801.5+344329
CLASS J165801.4232+344328.428	MITG J165800+3444	WISE J165801.41+344328.4	[VV98] J165801.5+344329
FBQS J1658+3443	NVSS J165801+344327	WN B1656.2+3448	Gaia DR3 1338723374678379904
FIRST J165801.4+344328	OHIO S 392	[HB93] 1656+348	Gaia DR1 1338723370380059776
GB2 1656+348	QSO B1656+348	[LGF2005] B165612+344801	Gaia DR2 1338723374678379904
GB6 B1656+3448	RORF 1656+348	[MGL2009] BZQ J1658+3443
87GB 165611.8+344805	S4 1656+347	[MML2015] 5BZQ J1658+3443
ICRF J165801.4+344328	S4 1656+34	[OCL83] 1656+348

References (101 between 1850 and 2023) (Total 101) 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 B1656+348

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