QSO B0256+075

Basic data :
QSO B0256+075 -- 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 (2014ApJS,BWE,...), QSO (2010ApJ,QSO,...), gam (1FGL,2FGL,...), Bla (2009A&A,[MGL2009],...), AGN (2011ApJ), MIR (WISEA,WISE), BL? (2021MNRAS), AG? (2022ApJS), G (LEDA), * (Gaia), X (2009A&A) 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) : 02 59 27.07662321 +07 47 39.6429924 (Radio) [ 0.0441384 0.0703 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) : 02 56 46.99946582 +07 35 45.1525034 [ 0.0441384 0.0703 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) : 169.11592916837 -43.30744639550 [ 0.0441384 0.0703 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 : -0.127 -0.230 [0.167 0.157 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) 168653 [~] / z(spectroscopic) 0.89 [~] / cz 266815 [~]    (Opt) D 2017ApJS..233....3T 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 (4) : B 18 [~] E ~ V 18 [~] E ~ R 16.9 [~] E 2009A&A...495..691M G 17.863565 [0.028325] C 2020yCat.1350....0G	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.

QSO B0256+075	IVS B0256+075	PMN J0259+0747	9Y-MST J0259+0747
BWE 0256+0735	JVAS B0256+075	QSO B0256+07	[CKB2000] J0259+0747
CLASS J025927.0772+074739.643	JVAS J0259+0747	RFC J0259+0747	[HB93] 0256+075
CRATES J025927+074740	1Jy 0256+07	RORF 0256+075	[MGL2009] BZQ J0259+0747
1FGL J0259.5+0743	1Jy 0256+075	S2 0256+07	[MML2015] 5BZQ J0259+0747
2FGL J0259.5+0740	LEDA 2823340	SQUAD DR1 J025927+074739	[VV2000] J025927.1+074739
3FGL J0259.5+0746	MITG J025928+0747	TGSSADR J025927.0+074739	[VV2003] J025927.1+074739
4FGL J0259.4+0746	MRC 0256+075	TXS 0256+075	[VV2006] J025927.1+074739
3FHL J0259.4+0747	NAICGB 0256+076	VLSSr J025927.5+074752	[VV2010] J025927.1+074739
GB6 B0256+0735	NAIC 0256+076	VLSS J0259.4+0747	[VV96] J025927.1+074739
87GB 025646.8+073535	NVSS J025927+074739	VSOP J0259+0747	[VV98] J025927.1+074739
GLEAM J025926+074738	OHIO D 094.7	WB 0256+0735	Gaia DR3 8527129285880704
ICRF J025927.0+074739	PKS J0259+0747	WISEA J025927.06+074739.6	Gaia DR1 8527124990607232
IERS B0256+075	PKS 0256+075	WISE J025927.06+074739.6	Gaia DR2 8527129285880704

References (192 between 1850 and 2024) (Total 192) 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 : QSO B0256+075

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