4C 21.28

Basic data :
7C 104907.3+213551 -- 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,7C,...), QSO (2005ApJ,QSO,...), Bla (2009A&A,[MGL2009],...), X (2009A&A,RX), MIR (WISEA,WISE), AGN (CGRaBS), Bz? ([SRM2005]), G (LEDA), * (Gaia), NIR (2MASS), IR (2MASSI), 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) : 10 51 48.78908056 +21 19 52.3137849 (Radio) [ 0.0433144 0.0516 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) : 10 49 07.19000952 +21 35 48.6542078 [ 0.0433144 0.0516 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) : 218.39869358353 +62.18959599810 [ 0.0433144 0.0516 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 : 0.672 -0.130 [0.424 0.434 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) 204537 [36] / z(spectroscopic) 1.30098 [0.00012] / cz 390024.0 [36.0]    (Opt) C 2015ApJS..219...12A Syntax of parallax is : 'value quality [error] bibcode' value : parallax value quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality) [error] : mean error bibcode : bibcode of the parallax reference Parallaxes (mas): 0.3951 [0.3473] A 2020yCat.1350....0G 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): 0.0000127 0.0000048 -9 (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 (11) : V 18.5 [~] E ~ R 17.72 [~] D 2008ApJS..175...97H G 18.935295 [0.013874] C 2020yCat.1350....0G J 16.719 [0.133] C 2010AJ....139.2360S H 16.168 [0.182] C 2010AJ....139.2360S K 15.724 [0.191] C 2010AJ....139.2360S u (AB) 18.739 [0.020] C 2015ApJS..219...12A g (AB) 18.918 [0.009] B 2015ApJS..219...12A r (AB) 18.380 [0.008] B 2015ApJS..219...12A i (AB) 18.471 [0.010] C 2015ApJS..219...12A z (AB) 18.558 [0.037] 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.

7C 104907.3+213551	1Jy 1049+21	RGB J1051+213	[HB93] 1049+215
BWE 1049+2135	1Jy 1049+215	RORF 1049+215	[MGL2009] BZQ J1051+2119
4C 21.28	LEDA 2819686	RX J1051.8+2119	[MML2015] 5BZQ J1051+2119
7C 1049+2135	2MASS J10514875+2119524	S3 1049+21	[P82] 1049+215
CGRaBS J1051+2119	2MASSI J1051487+211952	SDSS J105148.78+211952.3	[SRM2005] J105148.79+211952.3
CLASS J105148.7909+211952.345	MITG J105149+2120	SDSS J105148.79+211952.3	[VV2000] J105148.9+211952
CRATES J105147+211933	NVSS J105148+211952	TGSSADR J105148.9+211953	[VV2003] J105148.9+211952
Cul 1049+215	OHIO L 282	TIC 95861700	[VV2006] J105148.9+211952
FIRST J105148.7+211952	PKS J1051+2119	TXS 1049+215	[VV2010] J105148.8+211952
GB6 B1049+2135	PKS 1049+21	VIPS J10518+2119	[VV96] J105148.9+211952
87GB 104906.0+213524	PKS 1049+215	VLSSr J105148.9+211959	[VV98] J105148.9+211952
ICRF J105148.7+211952	QSO B1049+215	VLSS J1051.8+2119	Gaia DR3 3988440599685813760
IERS B1049+215	QSO B1049+2135	VSOP J1051+2119	Gaia DR1 3988440599685813760
IVS B1049+215	QSO J1051+2119	WB 1049+2135	Gaia DR2 3988440599685813760
JVAS J1051+2119	RFC J1051+2119	WISEA J105148.78+211952.3
JVAS B1049+215	RGB J1051.8+2119	WISE J105148.78+211952.3

References (149 between 1850 and 2024) (Total 149) 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 : 7C 104907.3+213551

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