4C 20.24

Basic data :
4C 20.24 -- 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 (2014ApJS,7C,...), QSO (2010A&A,QSO,...), Bla (2009A&A,[MGL2009],...), X (2009A&A,RX,...), AGN (2020MNRAS,CGRaBS), MIR (WISEA,WISE), Opt (LAMOST,SDSS), G (LEDA), * (Gaia), NIR (2MASS), IR (2MASSI) 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 58 17.9007317832 +19 51 50.872721328 (Optical) [ 0.0718 0.0660 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) : 10 55 37.5476009591 +20 07 55.322518228 [ 0.0718 0.0660 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) : 222.5145862988414 +63.1299401971219 [ 0.0718 0.0660 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 : 0.084 -0.172 [0.098 0.107 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) 190322 [21] / z(spectroscopic) 1.11592 [0.00007] / cz 334544.4 [21.0]    (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): 0.0135 [0.0846] A 2020yCat.1350....0G 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 (12) : B 17.51 [~] D 2010A&A...518A..10V V 17.07 [~] D 2010A&A...518A..10V R 17.28 [~] D 2008ApJS..175...97H G 17.150097 [0.004192] C 2020yCat.1350....0G J 16.031 [0.071] C 2010AJ....139.2360S H 15.245 [0.080] C 2010AJ....139.2360S K 14.611 [0.073] C 2010AJ....139.2360S u (AB) 17.254 [0.010] C 2015ApJS..219...12A g (AB) 17.235 [0.005] B 2015ApJS..219...12A r (AB) 16.898 [0.004] B 2015ApJS..219...12A i (AB) 16.891 [0.005] B 2015ApJS..219...12A z (AB) 17.022 [0.012] 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 105537.0+200809	1Jy 1055+201	RX J1058.3+1951	[GW2008] CoNFIG 83
BWE 1055+2008	LAMOST J105817.90+195150.9	RX J1058.2+1951	[HB93] 1055+201
4C 20.24	LEDA 2819634	1RXS J105818.3+195149	[MGL2009] BZQ J1058+1951
7C 1055+2008	2MASS J10581791+1951509	S3 1055+20	[MML2015] 5BZQ J1058+1951
CGRaBS J1058+1951	2MASSI J1058179+195151	SDSS J105817.90+195150.9	[PW82] 1055+20
CLASS J105817.8992+195150.902	MITG J105817+1951	SQUAD DR1 J105817+195150	[S77] 170
Cul 1055+201	NVSS J105817+195209	TGSSADR J105817.5+195209	[VV2000] J105818.0+195151
DA 292	OHIO L 293	TIC 84949908	[VV2003] J105818.0+195151
FIRST J105817.8+195151	OHIO A 292	TXS 1055+201	[VV2006] J105818.0+195151
FIRST J105817.4+195211	PKS 1055+201	UT 1055+201	[VV2010] J105817.9+195151
FIRST J105817.9+195151	PKS 1055+20	VCS1 J1058+1951	[VV96] J105818.0+195151
GB6 B1055+2008	PKS J1058+1951	VLSSr J105817.6+195205	[VV98] J105818.0+195151
87GB 105537.8+200823	QSO J1058+1951	VRO 20.10.06	[ZEH2003] RX J1058.3+1951 1
GLEAM J105817+195203	QSO B1055+201	VSOP J1058+1951	Gaia DR3 3985009028190654592
ICRF J105817.9+195150	QSO B1055+2008	VSOP J1058+1952	Gaia DR1 3985009023895845504
IERS B1055+201	QSO B1055+2007	WB 1055+2008	Gaia DR2 3985009028190654592
IVS B1055+201	QSO B1055+20	WISEA J105817.90+195150.9
JVAS J1058+1951	RGB J1058.3+1951	WISE J105817.90+195150.9
1Jy 1055+20	RGB J1058+198	[BDW2002] q1055+2007

References (221 between 1850 and 2024) (Total 221) 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 20.24

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