TXS 0820+560

Basic data :
4C 56.16A -- Blazar 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,4C,...), QSO (2010ApJ,QSO,...), Bla (2009A&A,[MGL2009],...), gam (0FGL,1FGL,...), AGN (2011ApJ,CGRaBS,...), * (SBSS,Gaia), X (2009A&A,RX), MIR (WISEA,WISE), Opt (LAMOST,SDSS), Bz? ([SRM2005]), Q? (2021MNRAS), AG? (2022ApJS) 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) : 08 24 47.23636459 +55 52 42.6693589 (Radio) [ 0.0361812 0.035 0 ] A 2020A&A...644A.159C 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) : 08 20 53.19946055 +56 02 27.4979429 [ 0.0361812 0.035 0 ] 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) : 161.95807652294 +35.11759545353 [ 0.0361812 0.035 0 ] 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 : -0.046 0.260 [0.122 0.114 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) 212287 [93] / z(spectroscopic) 1.41908 [0.00031] / cz 425429.5 [92.9]    (Opt) C 2020ApJS..249....3A 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): 0.0000082 0.0000067 20 (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 (9) : B 18.52 [~] D 2010A&A...518A..10V V 18.19 [~] D 2010A&A...518A..10V R 17.82 [~] D 2008ApJS..175...97H G 18.055368 [0.010858] C 2020yCat.1350....0G u (AB) 18.501 [0.016] C 2020ApJS..249....3A g (AB) 18.360 [0.007] B 2020ApJS..249....3A r (AB) 18.091 [0.007] B 2020ApJS..249....3A i (AB) 17.930 [0.009] B 2020ApJS..249....3A z (AB) 17.897 [0.021] C 2020ApJS..249....3A	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.

4C 56.16A	87GB 082053.4+560221	RGB J0824.8+5552	9Y-MST J0824+5551
BWE 0820+5602	GRA B0823+56	RORF 0820+560	[GW2008] CoNFIG 20
6C 082053+560229	ICRF J082447.2+555242	RX J0824.7+5552	[HB93] 0820+560
7C 082053.00+560228.00	IERS B0820+560	S4 0820+560	[MGL2009] BZQ J0824+5552
CGRaBS J0824+5552	IVS B0820+560	S4 0820+56	[MML2015] 5BZQ J0824+5552
CJ1 0820+560	JVAS J0824+5552	SBSS 0820+560	[P82] 0820+560
CJF B0820+560	JVAS B0820+560	SDSS J082447.24+555242.6	[SRC2012b] J0824+5552
CLASS J082447.2364+555242.661	JVAS J0824+558	TGSSADR J082447.3+555243	[SRM2005] J082447.23+555242.6
CLASS J082447.2398+555242.661	LAMOST J082447.24+555242.7	TXS 0820+560	[VV2000] J082447.2+555243
4CP 56.16.1	MASIV J0824+5552	VIPS J08247+5552	[VV2003] J082447.2+555243
CRATES J082447+555238	MY 082054.4+555247.2	VLSSr J082447.6+555248	[VV2006] J082447.2+555243
0FGL J0824.9+5551	NVSS J082447+555242	VLSS J0824.7+5552	[VV2010] J082447.2+555243
1FGL J0825.0+5555	OHIO J 535	VSOP J0824+5552	[VV96] J082447.2+555243
2FGL J0824.9+5552	QSO B0820+560	WB 0820+5602	[VV98] J082447.2+555243
3FGL J0824.9+5551	QSO B0820+5602	WISEA J082447.24+555242.7	Gaia DR3 1033963142574790400
4FGL J0824.7+5552	QSO J0824+5552	WISE J082447.23+555242.8	Gaia DR1 1033963142574790400
FIRST J082447.2+555242	RFC J0824+5552	WISE J082447.24+555242.7	Gaia DR2 1033963142574790400
GB6 B0820+5602	RGB J0824+558	WN B0820.8+5602

References (198 between 1850 and 2024) (Total 198) 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 : TXS 0820+560

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