Gopal 0902+490

Basic data :
6C 090202+490306 -- 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 (2020A&A,6C,...), QSO (2008ApJ,QSO,...), AGN (2020MNRAS), G (LEDA), * (Gaia), NIR (2MASS), 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) : 09 05 27.4638219840 +48 50 49.966312452 (Optical) [ 0.0555 0.0450 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) : 09 02 00.3728834698 +49 02 49.935658143 [ 0.0555 0.0450 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) : 170.3372714335447 +41.8077764083540 [ 0.0555 0.0450 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 : -0.023 -0.014 [0.068 0.053 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) 258689 [57] / z(spectroscopic) 2.68606 [0.00019] / cz 805260.5 [57.0]    (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 (11) : B 17.92 [~] D 2010A&A...518A..10V V 17.71 [~] D 2010A&A...518A..10V G 17.262779 [0.002982] C 2020yCat.1350....0G J 16.170 [0.087] C 2010AJ....139.2360S H 15.296 [0.102] C 2010AJ....139.2360S K 15.077 [0.122] C 2010AJ....139.2360S u (AB) 18.259 [0.013] C 2015ApJS..219...12A g (AB) 17.555 [0.005] B 2015ApJS..219...12A r (AB) 17.499 [0.005] B 2015ApJS..219...12A i (AB) 17.390 [0.006] B 2015ApJS..219...12A z (AB) 17.231 [0.013] 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 090202+490306	GB6 B0902+4902	NVSS J090527+485049	VLSS J0905.4+4850
BP 89	87GB 090200.8+490245	QSO B0902+490	WB 0902+4902
BWE 0902+4902	Gopal 0902+490	S4 0902+490	WN B0902.0+4902
6C 090200+490251	ICRF J090527.4+485049	S4 0902+49	[VV2000] J090527.5+485051
6C 090201+490243	IERS B0902+490	SDSS J090527.46+485049.9	[VV2003] J090527.5+485051
7C 090200.29+490249.00	IVS B0902+490	SDSS J090527.46+485050.2	[VV2006] J090527.5+485051
CJ2 0902+490	JVAS B0902+490	TGSSADR J090527.4+485049	[VV2010] J090527.5+485051
CJF B0902+490	JVAS J0905+4850	TIC 457131492	[VV96] J090527.5+485051
CLASS J090527.4612+485049.956	JVAS J0905+488	TXS 0902+490	[VV98] J090527.5+485051
CRATES J090528+485051	LEDA 3084704	VCS1 J0905+4850	Gaia DR3 1012686978397952384
FIRST J090527.4+485049	2MASS J09052746+4850499	VIPS J09054+4850	Gaia DR1 1012686974102024832
GB1 0902+490	MY 090201.3+485053.8	VLSSr J090527.7+485050	Gaia DR2 1012686978397952384

References (86 between 1850 and 2024) (Total 86) 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

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Data at NED - NASA/IPAC Extragalactic Database : Gopal 0902+490

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