4C 04.42

Basic data :
4C 04.42 -- 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,4C,...), QSO (2010ApJ,QSO,...), X (2012ApJS,2E,...), Bla (2009A&A,[MGL2009],...), gam (1FGL,2FGL,...), AGN (2011ApJ,CGRaBS,...), * (2012ApJS,USNO,...), Bz? (2013ApJS,[SRM2005]), MIR (WISEA,WISE), Opt (LAMOST,SDSS), G (LEDA), UV (GALEX), NIR (2MASS), FIR (2015A&A), IR (HVCS) 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) : 12 22 22.54962606 +04 13 15.7760715 (Radio) [ 0.0306666 0.0323 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) : 12 19 49.26229628 +04 29 53.7327342 [ 0.0306666 0.0323 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) : 284.81918444056 +66.06550896773 [ 0.0306666 0.0323 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 : -0.313 -0.038 [0.220 0.110 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) 176552 [~] / z(spectroscopic) 0.966000 [~] / cz 289599.51 [~]    (Opt) D 2018A&A...613A..51P 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 17.88 [~] D 2010A&A...518A..10V V 17.98 [~] D 2010A&A...518A..10V R 17.06 [~] D 2008ApJS..175...97H G 17.817274 [0.006390] C 2020yCat.1350....0G J 16.348 [0.134] C 2010AJ....139.2360S H 15.849 [0.147] C 2010AJ....139.2360S K 14.969 [0.140] C 2010AJ....139.2360S u (AB) 17.2978 [0.0128] C 2020ApJS..250....8L g (AB) 17.0296 [0.0266] C 2020ApJS..250....8L r (AB) 16.8031 [0.0195] C 2020ApJS..250....8L i (AB) 16.6504 [0.0169] C 2020ApJS..250....8L z (AB) 16.4399 [0.0180] 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 04.42	IERS B1219+044	RGB J1222.4+0413	Zel 1219+043
BWE 1219+0429	IGR J12226+0414	RGB J1222+042	[BAG2012] 185.6009+04.20212
CGRaBS J1222+0413	IVS B1219+044	RORF 1219+044	[HB93] 1219+044
CLASS J122222.5465+041315.781	JVAS J1222+0413	RX J1222.3+0413	[KRL2007b] 112
CRATES J122221+041316	JVAS B1219+044	1RXS J122222.8+041316	[MGL2009] BZQ J1222+0413
DA 321	LAMOST J122222.55+041315.7	SDSS J122222.55+041315.7	[MML2015] 5BZQ J1222+0413
2E 2679	LEDA 2818546	SDSS J122222.54+041315.7	[SRC2012b] J1222+0413
2E 1219.8+0430	MASIV J1222+0413	SWIFT J1222.4+0414	[SRM2005] J122222.54+041315.7
1ES 1219+04.4	2MASS J12222257+0413159	TGSSADR J122222.5+041316	[THJ2000] 18
1FGL J1222.5+0415	MITG J122224+0413	TIC 377189953	[VV2000] J122222.5+041316
2FGL J1222.4+0413	MRC 1219+044	TXS 1219+044	[VV2003] J122222.5+041316
3FGL J1222.4+0414	NVSS J122222+041317	USNO-A2.0 0900-07135809	[VV2006] J122222.5+041316
4FGL J1222.5+0414	PBC J1222.3+0415	VLSSr J122223.2+041323	[VV2010] J122222.6+041315
FIRST J122222.5+041316	PKS J1222+0413	VLSS J1222.3+0413	[VV96] J122222.5+041316
GALEX J122222.5+041316	PKS 1219+04	WB 1219+0429	[VV98] J122222.5+041316
GB6 B1219+0429	PKS 1219+044	WISEA J122222.54+041315.7	[WTW94] 1219+044
87GB 121949.0+042947	PMN J1222+0413	WISE J122222.55+041315.8	[ZEH2003] RX J1222.3+0413 1
GLEAM J122222+041312	QSO B1219+0429	WISE J122222.54+041315.7	Gaia DR3 3701924057219570688
HVCS 2693	QSO B1219+044	WSTB 31W11	Gaia DR1 3701924052924338816
ICRF J122222.5+041315	RFC J1222+0413	2XMMi J122222.5+041315	Gaia DR2 3701924057219570688

References (299 between 1850 and 2023) (Total 299) 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 04.42

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