QSO 0642+449

Basic data :
7C 064253.00+445430.00 -- 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,KODIAQ,...), Bla (2009A&A,[DGT2001],...), AGN (2011AJ,CGRaBS), X (2009A&A,2E), MIR (WISEA,WISE), Bz? ([SRM2005]), Q? ([CSC85]), * (Gaia), NIR (2MASS) 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) : 06 46 32.02599653 +44 51 16.5901185 (Radio) [ 0.0303054 0.0304 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) : 06 42 53.01766252 +44 54 30.8278224 [ 0.0303054 0.0304 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) : 171.08925255324 +17.94540199102 [ 0.0303054 0.0304 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 : 0.416 0.095 [0.247 0.215 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) 270445 [~] / z(emission) 3.408 [~] / cz 1021693 [~]    (Opt) C 2017AJ....154..114O 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): 0.1221 [0.2074] 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): 0.0000113 0.0000063 36 (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 (7) : B 19.57 [~] D 2010A&A...518A..10V V 18.49 [~] D 2010A&A...518A..10V R 18.64 [~] D 2008ApJS..175...97H G 18.733328 [0.004155] C 2020yCat.1350....0G J 17.060 [0.189] D 2003yCat.2246....0C H 16.167 [0.192] D 2003yCat.2246....0C K 15.668 [0.192] D 2003yCat.2246....0C	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 064253.00+445430.00	JVAS B0642+449	S4 0642+44	[MML2015] 5BZQ J0646+4451
B3 0642+449	1Jy 0642+44	TGSSADR J064631.9+445115	[ODS2007] HFP J0646+4451
BWE 0642+4454	KODIAQ J064632+445116	TIC 307755009	[P82] 0642+449
CGRaBS J0646+4451	MASIV J0646+4451	TXS 0642+449	[S77] 92
CJ1 0642+449	2MASS J06463199+4451164	VSOP J0646+4451	[SRM2005] J064632.02+445116.5
CJF B0642+449	MY 064254.4+445445.1	WB 0642+4454	[VV2000] J064632.0+445117
CLASS J064632.0277+445116.583	MY 064254.4+445130.7	WISEA J064632.02+445116.5	[VV2003] J064632.0+445117
CRATES J064631+445122	NRRF J064631.9+445117	WISE J064632.02+445116.5	[VV2006] J064632.0+445117
2E 1729	NVSS J064632+445116	WMAP J0646+4451	[VV2010] J064632.0+445117
2E 0642.9+4454	OHIO H 471	WN B0642.8+4454	[VV96] J064632.0+445117
GB6 B0642+4454	PCCS2 143 G171.08+17.94	WSTB 75W269	[VV98] J064632.0+445117
87GB 064252.1+445433	QSO J0646+4451	[CSC85] 0642.9+4491	[WTW94] 0642+449
ICRF J064632.0+445116	QSO B0642+4454	[DGT2001] B0642+449	Gaia DR3 964515655998407808
IERS B0642+449	QSO B0642+449	[HB93] 0642+449	Gaia DR2 964515655998407808
IVS B0642+449	RFC J0646+4451	[HMI96] 0642+4454
JVAS J0646+4451	RORF 0642+449	[LWT91] 0642+4454
JVAS J0646+448	S4 0642+449	[MGL2009] BZQ J0646+4451

References (348 between 1850 and 2024) (Total 348) 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 : QSO 0642+449

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