4C -02.04A

Basic data :
4C -02.04A -- 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 (2010AJ,4C,...), QSO (2010A&A,QSO,...), Bla (2009A&A,[DGT2001],...), * (PB,USNO,...), AGN (2020MNRAS,CGRaBS), X (2009A&A,2E), MIR (WISEA,WISE), Q? (FBQS), G (LEDA), cm (AT20G), UV (GALEX), Opt (SDSS) 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) : 00 40 57.6113680704 -01 46 32.027603772 (Optical) [ 0.1089 0.0650 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) : 00 38 24.2354847103 -02 02 59.343482523 [ 0.1089 0.0650 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) : 116.8358322457337 -64.5232214736848 [ 0.1089 0.0650 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 : 0.195 0.113 [0.167 0.153 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) 195432 [42] / z(spectroscopic) 1.178373 [0.000141] / cz 353267.34 [42.27]    (Opt) C 2018A&A...613A..51P 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): 0.0000232 0.0000117 -1 (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 18.5 [~] E ~ V 18.00 [~] E ~ R 18.38 [~] D 2008ApJS..175...97H G 18.110476 [0.003237] C 2020yCat.1350....0G u (AB) 18.4557 [0.0155] C 2020ApJS..250....8L g (AB) 18.5549 [0.0268] C 2020ApJS..250....8L r (AB) 18.2898 [0.0161] C 2020ApJS..250....8L i (AB) 18.2493 [0.0199] C 2020ApJS..250....8L z (AB) 18.3530 [0.0233] 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.

4C -02.04	IERS B0038-020	S3 0038-02	[MML2015] 5BZQ J0040-0146
AT20G J004057-014633	IVS B0038-020	SDSS J004057.61-014631.9	[P82] 0038-020
BWE 0038-0202	LEDA 2822306	SQUAD DR1 J004057-014631	[S77] 11
4C -02.04A	MRC 0038-020	TGSSADR J004057.5-014629	[VV2000] J004057.6-014631
CGRaBS J0040-0146	NVSS J004057-014631	USNO-A2.0 0825-00152119	[VV2003] J004057.6-014631
CRATES J004056-014626	PB 6091	UT 0038-019	[VV2006] J004057.6-014631
2E 0038.4-0203	PKS 0038-020	VCS1 J0040-0146	[VV2010] J004057.6-014631
2E 121	PKS J0040-0146	VEPS 1 J0040-0146	[VV96] J004057.6-014631
FBQS J0040-0146	PMN J0040-0146	WISEA J004057.61-014632.0	[VV98] J004057.6-014631
FIRST J004057.6-014632	QSO B0038-02	WISE J004057.61-014632.0	[WTW94] 0038-020
GALEX J004057.5-014631	QSO B0038-020	[DGT2001] B0038-020	Gaia DR3 2530369193481132032
GLEAM J004057-014626	QSO J0040-0146	[HB93] 0038-020	Gaia DR1 2530369193481132032
ICRF J004057.6-014632	RFC J0040-0146	[MGL2009] BZQ J0040-0146	Gaia DR2 2530369193481132032

References (103 between 1850 and 2024) (Total 103) 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 : 4C -02.04A

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